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Marco-Contelles J. α-Phenyl- N-tert-Butylnitrone and Analogous α-Aryl- N-alkylnitrones as Neuroprotective Antioxidant Agents for Stroke. Antioxidants (Basel) 2024; 13:440. [PMID: 38671888 PMCID: PMC11047398 DOI: 10.3390/antiox13040440] [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: 02/19/2024] [Revised: 03/18/2024] [Accepted: 04/04/2024] [Indexed: 04/28/2024] Open
Abstract
The recent advances in research on the use of the antioxidant and neuroprotective agent α-phenyl-N-tert-butylnitrone (PBN) for the therapy of stroke have been reviewed. The protective effect of PBN in the transient occlusion of the middle cerebral artery (MCAO) has been demonstrated, although there have been significant differences in the neuronal salvaging effect between PBN-treated and untreated animals, each set of data having quite large inter-experimental variation. In the transient forebrain ischemia model of gerbil, PBN reduces the mortality after ischemia and the neuronal damage in the hippocampal cornu ammonis 1 (CA1) area of the hippocumpus caused by ischemia. However, PBN fails to prevent postischemic CA1 damage in the rat. As for focal cerebral ischemia, PBN significantly reduces cerebral infarction and decreases neurological deficit after ischemia using a rat model of persistent MCAO in rats. Similarly, the antioxidant and neuroprotective capacity of a number of PBN-derived nitrones prepared in the author's laboratory have also been summarized here, showing their high potential therapeutic power to treat stroke.
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Affiliation(s)
- José Marco-Contelles
- Laboratory of Medicinal Chemistry, Institute of Organic Chemistry (CSIC), C/ Juan de la Cierva, 3, 28006 Madrid, Spain;
- Centre for Biomedical Network Research on Rare Diseases (CIBERER), Center for Biomedical Network Research (CIBER), Carlos III Health Institute (ISCIII), 46010 Madrid, Spain
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Dorado-Martínez C, Montiel-Flores E, Ordoñez-Librado JL, Gutierrez-Valdez AL, Garcia-Caballero CA, Sanchez-Betancourt J, Reynoso-Erazo L, Tron-Alvarez R, Rodríguez-Lara V, Avila-Costa MR. Histological and Memory Alterations in an Innovative Alzheimer's Disease Animal Model by Vanadium Pentoxide Inhalation. J Alzheimers Dis 2024; 99:121-143. [PMID: 38640149 DOI: 10.3233/jad-230818] [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: 04/21/2024]
Abstract
Background Previous work from our group has shown that chronic exposure to Vanadium pentoxide (V2O5) causes cytoskeletal alterations suggesting that V2O5 can interact with cytoskeletal proteins through polymerization and tyrosine phosphatases inhibition, causing Alzheimer's disease (AD)-like hippocampal cell death. Objective This work aims to characterize an innovative AD experimental model through chronic V2O5 inhalation, analyzing the spatial memory alterations and the presence of neurofibrillary tangles (NFTs), amyloid-β (Aβ) senile plaques, cerebral amyloid angiopathy, and dendritic spine loss in AD-related brain structures. Methods 20 male Wistar rats were divided into control (deionized water) and experimental (0.02 M V2O5 1 h, 3/week for 6 months) groups (n = 10). The T-maze test was used to assess spatial memory once a month. After 6 months, histological alterations of the frontal and entorhinal cortices, CA1, subiculum, and amygdala were analyzed by performing Congo red, Bielschowsky, and Golgi impregnation. Results Cognitive results in the T-maze showed memory impairment from the third month of V2O5 inhalation. We also noted NFTs, Aβ plaque accumulation in the vascular endothelium and pyramidal neurons, dendritic spine, and neuronal loss in all the analyzed structures, CA1 being the most affected. Conclusions This model characterizes neurodegenerative changes specific to AD. Our model is compatible with Braak AD stage IV, which represents a moment where it is feasible to propose therapies that have a positive impact on stopping neuronal damage.
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Affiliation(s)
- Claudia Dorado-Martínez
- Neuromorphology Lab, Facultad de Estudios Superiores Iztacala, UNAM, Los Reyes Iztacala, Tlalnepantla, Edo. Mex., Mexico
| | - Enrique Montiel-Flores
- Neuromorphology Lab, Facultad de Estudios Superiores Iztacala, UNAM, Los Reyes Iztacala, Tlalnepantla, Edo. Mex., Mexico
| | - Jose Luis Ordoñez-Librado
- Neuromorphology Lab, Facultad de Estudios Superiores Iztacala, UNAM, Los Reyes Iztacala, Tlalnepantla, Edo. Mex., Mexico
| | - Ana Luisa Gutierrez-Valdez
- Neuromorphology Lab, Facultad de Estudios Superiores Iztacala, UNAM, Los Reyes Iztacala, Tlalnepantla, Edo. Mex., Mexico
| | - Cesar Alfonso Garcia-Caballero
- Neuromorphology Lab, Facultad de Estudios Superiores Iztacala, UNAM, Los Reyes Iztacala, Tlalnepantla, Edo. Mex., Mexico
| | | | - Leonardo Reynoso-Erazo
- Health Education Project, Facultad de Estudios Superiores Iztacala, UNAM, Mexico City, Mexico
| | - Rocio Tron-Alvarez
- Health Education Project, Facultad de Estudios Superiores Iztacala, UNAM, Mexico City, Mexico
| | - Vianey Rodríguez-Lara
- Department of Cell and Tissue Biology, Faculty of Medicine, UNAM, Mexico City, Mexico
| | - Maria Rosa Avila-Costa
- Neuromorphology Lab, Facultad de Estudios Superiores Iztacala, UNAM, Los Reyes Iztacala, Tlalnepantla, Edo. Mex., Mexico
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Medina Dos Santos N, Batista ÂG, Padilha Mendonça MC, Figueiredo Angolini CF, Grimaldi R, Pastore GM, Sartori CR, Alice da Cruz-Höfling M, Maróstica Júnior MR. Açai pulp improves cognition and insulin sensitivity in obese mice. Nutr Neurosci 2024; 27:55-65. [PMID: 36625400 DOI: 10.1080/1028415x.2022.2158931] [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: 01/11/2023]
Abstract
SCOPE Obesity and insulin resistance constitute risk factors for the development of tauopathies and other neurodegenerative diseases. (Poly)phenol compounds are under study for its role in protecting effects against neural injuries and degeneration. Here, we investigated the effect of Amazonian açai pulp (AP) intake in the prevention of memory and cognitive impairment resulting from a high-fat diet intake in mice. METHODS AND RESULTS Obesity and insulin resistance was induced with a high-fat diet and supplemented with 2% AP to investigate peripheral insulin resistance, recognition memory and tau protein stability via AKT/GSK3-β signaling pathway. The consumption of AP for 70 days improved peripheral insulin sensitivity and phosphorylation of AKT/GSK3-β in mice hippocampi. The animals fed high-fat diets supplemented with AP showed better performance in the novel object recognition test (NOR) in comparison to the H group. Catalase activity and reduced glutathione (GSH) values were improved in the treated mice. CONCLUSIONS These results suggest that the supplementation of AP can attenuate the effects of high-fat diet consumption in peripheral insulin resistance and improve cognitive behavior.
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Affiliation(s)
| | - Ângela Giovana Batista
- Institute of Life Sciences, Federal University of Juiz de Fora, Governador Valadares, Brazil
| | | | | | - Renato Grimaldi
- Department of Food Technology, Faculty of Food Engineering, University of Campinas, Brazil
| | - Glaucia Maria Pastore
- Department of Food Science, School of Food Engineering, University of Campinas, Brazil
| | - César Renato Sartori
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Maria Alice da Cruz-Höfling
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas, Campinas, Brazil
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Cilleros-Holgado P, Gómez-Fernández D, Piñero-Pérez R, Romero-Domínguez JM, Reche-López D, López-Cabrera A, Álvarez-Córdoba M, Munuera-Cabeza M, Talaverón-Rey M, Suárez-Carrillo A, Romero-González A, Sánchez-Alcázar JA. Mitochondrial Quality Control via Mitochondrial Unfolded Protein Response (mtUPR) in Ageing and Neurodegenerative Diseases. Biomolecules 2023; 13:1789. [PMID: 38136659 PMCID: PMC10741690 DOI: 10.3390/biom13121789] [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: 11/18/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Mitochondria play a key role in cellular functions, including energy production and oxidative stress regulation. For this reason, maintaining mitochondrial homeostasis and proteostasis (homeostasis of the proteome) is essential for cellular health. Therefore, there are different mitochondrial quality control mechanisms, such as mitochondrial biogenesis, mitochondrial dynamics, mitochondrial-derived vesicles (MDVs), mitophagy, or mitochondrial unfolded protein response (mtUPR). The last item is a stress response that occurs when stress is present within mitochondria and, especially, when the accumulation of unfolded and misfolded proteins in the mitochondrial matrix surpasses the folding capacity of the mitochondrion. In response to this, molecular chaperones and proteases as well as the mitochondrial antioxidant system are activated to restore mitochondrial proteostasis and cellular function. In disease contexts, mtUPR modulation holds therapeutic potential by mitigating mitochondrial dysfunction. In particular, in the case of neurodegenerative diseases, such as primary mitochondrial diseases, Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease (HD), Amyotrophic Lateral Sclerosis (ALS), or Friedreich's Ataxia (FA), there is a wealth of evidence demonstrating that the modulation of mtUPR helps to reduce neurodegeneration and its associated symptoms in various cellular and animal models. These findings underscore mtUPR's role as a promising therapeutic target in combating these devastating disorders.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Jose Antonio Sánchez-Alcázar
- Centro Andaluz de Biología del Desarrollo (CABD-CSIC-Universidad Pablo de Olavide), 41013 Sevilla, Spain; (P.C.-H.); (D.G.-F.); (R.P.-P.); (J.M.R.-D.); (D.R.-L.); (A.L.-C.); (M.Á.-C.); (M.M.-C.); (M.T.-R.); (A.S.-C.); (A.R.-G.)
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Zhan-Qiang H, Hai-Hua Q, Chi Z, Miao W, Cui Z, Zi-Yin L, Jing H, Yi-Wei W. miR-146a aggravates cognitive impairment and Alzheimer disease-like pathology by triggering oxidative stress through MAPK signaling. Neurologia 2023; 38:486-494. [PMID: 37659839 DOI: 10.1016/j.nrleng.2020.12.006] [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: 09/25/2020] [Accepted: 12/26/2020] [Indexed: 09/04/2023] Open
Abstract
INTRODUCTION Mir-146a-5p has been widely recognized as a critical regulatory element in the immune response. However, recent studies have shown that miR-146a-5p may also be involved in the development of Alzheimer disease (AD). Regrettably, the related mechanisms are poorly understood. Here, we investigated the effects of miR-146a in mice models and SH-SY5Y cells treated with amyloid β (Aβ)1-42. METHODS To create a model of AD, SH-SY5Y cells were treated with Aβ1-42 and mice received intracerebroventricular injections of Aβ1-42. Then, the transcriptional levels of miR-146a were estimated by real-time PCR. We transiently transfected the miR-146a-5p mimic/inhibitor into cells and mice to study the role of miR-146a. The role of signaling pathways including p38 and reactive oxygen species (ROS) was studied by using specific inhibitors. Aβ and amyloid-beta precursor protein (APP)levels were measured by immunoblotting. Furthermore, Aβ expression was analyzed by immunofluorescence and histochemical examinations. RESULTS Aβ1-42-stimulated SH-SY5Y cells displayed increased transcriptional levels of miR-146a and APP. Moreover, the p38 MAPK signaling pathway and ROS production were activated upon stimulation with a miR-146a-5p mimic. However, treatment with a miR-146a-5p inhibitor decreased the levels of APP, ROS, and p-p38 MAPK. A similar phenomenon was also observed in the animals treated with Aβ1-42, in which miR-146a upregulation increased the expression of Aβ, p-p38, and ROS, while the inhibition of miR-146a had the opposite effect. This suggests that miR-146a increases Aβ deposition and ROS accumulation via the p-p38 signaling pathway. CONCLUSIONS Our research demonstrates that miR-146a-5pa increases Aβ deposition by triggering oxidative stress through activation of MAPK signaling.
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Affiliation(s)
- H Zhan-Qiang
- Department of General medicine, Affiliated Hospital of Chengde Medical College, Chengde 067000, China
| | - Q Hai-Hua
- Department of Dermatology, Affiliated Hospital of Chengde Medical College, Chengde 067000, China
| | - Z Chi
- Department of Neurology, Affilicated Hospital of Chengde Medical College, Chengde 067000, China
| | - W Miao
- Department of General medicine, Affiliated Hospital of Chengde Medical College, Chengde 067000, China
| | - Z Cui
- Department of General medicine, Affiliated Hospital of Chengde Medical College, Chengde 067000, China
| | - L Zi-Yin
- Department of General medicine, Affiliated Hospital of Chengde Medical College, Chengde 067000, China
| | - H Jing
- Department of General medicine, Affiliated Hospital of Chengde Medical College, Chengde 067000, China
| | - W Yi-Wei
- Department of General medicine, Affiliated Hospital of Chengde Medical College, Chengde 067000, China.
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Demirhan I, Oner E, Kurutas EB. Evaluation of the relationship between insulin resistance and 8-iso prostaglandin levels in obesity children. Folia Med (Plovdiv) 2023; 65:589-596. [PMID: 37655377 DOI: 10.3897/folmed.65.e81316] [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: 01/27/2022] [Accepted: 04/18/2022] [Indexed: 09/02/2023] Open
Abstract
INTRODUCTION The rising rate of childhood obesity and the serious health problems it causes are gaining increasing attention in medical research and health policy.
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The Neuroprotective Activities of the Novel Multi-Target Iron-Chelators in Models of Alzheimer's Disease, Amyotrophic Lateral Sclerosis and Aging. Cells 2023; 12:cells12050763. [PMID: 36899898 PMCID: PMC10001413 DOI: 10.3390/cells12050763] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 02/03/2023] [Accepted: 02/22/2023] [Indexed: 03/04/2023] Open
Abstract
The concept of chelation therapy as a valuable therapeutic approach in neurological disorders led us to develop multi-target, non-toxic, lipophilic, brain-permeable compounds with iron chelation and anti-apoptotic properties for neurodegenerative diseases, such as Parkinson's disease (PD), Alzheimer's disease (AD), age-related dementia and amyotrophic lateral sclerosis (ALS). Herein, we reviewed our two most effective such compounds, M30 and HLA20, based on a multimodal drug design paradigm. The compounds have been tested for their mechanisms of action using animal and cellular models such as APP/PS1 AD transgenic (Tg) mice, G93A-SOD1 mutant ALS Tg mice, C57BL/6 mice, Neuroblastoma × Spinal Cord-34 (NSC-34) hybrid cells, a battery of behavior tests, and various immunohistochemical and biochemical techniques. These novel iron chelators exhibit neuroprotective activities by attenuating relevant neurodegenerative pathology, promoting positive behavior changes, and up-regulating neuroprotective signaling pathways. Taken together, these results suggest that our multifunctional iron-chelating compounds can upregulate several neuroprotective-adaptive mechanisms and pro-survival signaling pathways in the brain and might function as ideal drugs for neurodegenerative disorders, such as PD, AD, ALS, and aging-related cognitive decline, in which oxidative stress and iron-mediated toxicity and dysregulation of iron homeostasis have been implicated.
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Calderaro A, Patanè GT, Tellone E, Barreca D, Ficarra S, Misiti F, Laganà G. The Neuroprotective Potentiality of Flavonoids on Alzheimer's Disease. Int J Mol Sci 2022; 23:ijms232314835. [PMID: 36499159 PMCID: PMC9736131 DOI: 10.3390/ijms232314835] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/19/2022] [Accepted: 11/24/2022] [Indexed: 12/05/2022] Open
Abstract
Alzheimer's disease (AD), due to its spread, has become a global health priority, and is characterized by senile dementia and progressive disability. The main cause of AD and other neurodegenerations (Huntington, Parkinson, Amyotrophic Lateral Sclerosis) are aggregated protein accumulation and oxidative damage. Recent research on secondary metabolites of plants such as polyphenols demonstrated that they may slow the progression of AD. The flavonoids' mechanism of action in AD involved the inhibition of acetylcholinesterase, butyrylcholinesterase, Tau protein aggregation, β-secretase, oxidative stress, inflammation, and apoptosis through modulation of signaling pathways which are implicated in cognitive and neuroprotective functions, such as ERK, PI3-kinase/Akt, NFKB, MAPKs, and endogenous antioxidant enzymatic systems. This review focuses on flavonoids and their role in AD, in terms of therapeutic potentiality for human health, antioxidant potential, and specific AD molecular targets.
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Affiliation(s)
- Antonella Calderaro
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Giuseppe Tancredi Patanè
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Ester Tellone
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
- Correspondence: (E.T.); (D.B.)
| | - Davide Barreca
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
- Correspondence: (E.T.); (D.B.)
| | - Silvana Ficarra
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Francesco Misiti
- Department of Human Sciences, Society and Health, University of Cassino and Southern Lazio, V. S. Angelo, Loc. Folcara, 3043 Cassino, Italy
| | - Giuseppina Laganà
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
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Synthesis and evaluation of aryl aminomethylene substituted barbiturates and thiobarbiturates as novel α-amylase inhibitors and radical scavengers. MONATSHEFTE FUR CHEMIE 2022. [DOI: 10.1007/s00706-022-02972-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Dragomanova S, Lazarova M, Munkuev A, Suslov E, Volcho K, Salakhutdinov N, Bibi A, Reynisson J, Tzvetanova E, Alexandrova A, Georgieva A, Uzunova D, Stefanova M, Kalfin R, Tancheva L. New Myrtenal–Adamantane Conjugates Alleviate Alzheimer’s-Type Dementia in Rat Model. Molecules 2022; 27:molecules27175456. [PMID: 36080227 PMCID: PMC9457974 DOI: 10.3390/molecules27175456] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/18/2022] [Accepted: 08/22/2022] [Indexed: 11/21/2022] Open
Abstract
Alzheimer’s disease (AD) is a neurodegenerative disease associated with memory impairment and other central nervous system (CNS) symptoms. Two myrtenal–adamantane conjugates (MACs) showed excellent CNS potential against Alzheimer’s models. Adamantane is a common pharmacophore for drug design, and myrtenal (M) demonstrated neuroprotective effects in our previous studies. The aim of this study is to evaluate the MACs’ neuroprotective properties in dementia. Methods: Scopolamine (Scop) was applied intraperitoneally in Wistar rats for 11 days, simultaneously with MACs or M as a referent, respectively. Brain acetylcholine esterase (AChE) activity, noradrenaline and serotonin levels, and oxidative brain status determination followed behavioral tests on memory abilities. Molecular descriptors and docking analyses for AChE activity center affinity were performed. Results: M derivatives have favorable physicochemical parameters to enter the CNS. Both MACs restored memory damaged by Scop, showing significant AChE-inhibitory activity in the cortex, in contrast to M, supported by the modeling analysis. Moderate antioxidant properties were manifested by glutathione elevation and catalase activity modulation. MACs also altered noradrenaline and serotonin content in the hippocampus. Conclusion: For the first time, neuroprotective properties of two MACs in a rat dementia model were observed. They were stronger than the natural M effects, which makes the substances promising candidates for AD treatment.
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Affiliation(s)
- Stela Dragomanova
- Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 23, 1113 Sofia, Bulgaria
- Department of Pharmacology, Toxicology, and Pharmacotherapy, Faculty of Pharmacy, Medical University, 9002 Varna, Bulgaria
- Correspondence: (S.D.); (K.V.)
| | - Maria Lazarova
- Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 23, 1113 Sofia, Bulgaria
| | - Aldar Munkuev
- Department of Medicinal Chemistry, Novosibirsk Institute of Organic Chemistry of the Russian Academy of Sciences, Lavrentiev Av. 9, 630090 Novosibirsk, Russia
| | - Evgeniy Suslov
- Department of Medicinal Chemistry, Novosibirsk Institute of Organic Chemistry of the Russian Academy of Sciences, Lavrentiev Av. 9, 630090 Novosibirsk, Russia
| | - Konstantin Volcho
- Department of Medicinal Chemistry, Novosibirsk Institute of Organic Chemistry of the Russian Academy of Sciences, Lavrentiev Av. 9, 630090 Novosibirsk, Russia
- Correspondence: (S.D.); (K.V.)
| | - Nariman Salakhutdinov
- Department of Medicinal Chemistry, Novosibirsk Institute of Organic Chemistry of the Russian Academy of Sciences, Lavrentiev Av. 9, 630090 Novosibirsk, Russia
| | - Amina Bibi
- School of Pharmacy and Bioengineering, Keele University, Hornbeam Building, Staffordshire ST5 5BG, UK
| | - Jóhannes Reynisson
- School of Pharmacy and Bioengineering, Keele University, Hornbeam Building, Staffordshire ST5 5BG, UK
| | - Elina Tzvetanova
- Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 23, 1113 Sofia, Bulgaria
| | - Albena Alexandrova
- Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 23, 1113 Sofia, Bulgaria
| | - Almira Georgieva
- Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 23, 1113 Sofia, Bulgaria
| | - Diamara Uzunova
- Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 23, 1113 Sofia, Bulgaria
| | - Miroslava Stefanova
- Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 23, 1113 Sofia, Bulgaria
| | - Reni Kalfin
- Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 23, 1113 Sofia, Bulgaria
- Department of Healthcare, South-West University “Neofit Rilski”, Ivan Mihailov St. 66, 2700 Blagoevgrad, Bulgaria
| | - Lyubka Tancheva
- Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 23, 1113 Sofia, Bulgaria
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Aameri R, Ghorbani H, Reza Bazrafshan H, Zahra Gharib F, Korani B. Iranian thyme honey plays behavioral, cellular and molecular important roles as an amazing preventive and therapeutic agent in the brain of Alzheimer's rat model. Neurosci Lett 2022; 783:136702. [PMID: 35660648 DOI: 10.1016/j.neulet.2022.136702] [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: 03/20/2022] [Revised: 05/14/2022] [Accepted: 05/30/2022] [Indexed: 10/18/2022]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder with neuronal loss in the hippocampus. Our aim was to evaluate the effects of Iranian thyme honey (single dose: 2 gr/kg) vs rivastigmine (0.3 mg/kg) in vivo on spatial memory and in vitro on important parameters of oxidative stress as well as quantitative and qualitative studies of hippocampal neurons of AD rat models with this design that 30 days after oral administration of 17 mg/kg AlCl3, 20 AD rats were received that underwent a 6-weeks therapeutic period and another 20 rats underwent a 6-weeks preventive period and also 20 rats were as controls. Y-Maze test was performed to show memory deficiency as well as TBARS and FRAP assays to measure malondialdehyde (MDA) and total antioxidant, respectively. In addition, H&E staining was also done for cell counting and morphological changes. We observed that AD rats with hippocampal damage had more significant errors during the Y-maze test than the control and other rats. Likewise, MDA and neurodegeneration increased in the AD group while in all preventive and therapeutic group's especially Iranian thyme honey, they decreased and conversely, total antioxidant and number of normal cells elevated and healthy neurons were observed in all parts of the hippocampus and cortex. Our results despite the limitations showed the powerful antioxidant properties and cytoprotective effects of Iranian thyme honey vs rivastigmine on hippocampal neurons that consequently enhanced memory and if advanced diagnostic tests in human clinical patients show other more pronounced effects, we have certainly started a key and targeted strategy.
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Affiliation(s)
- Reza Aameri
- Young Researchers and Elites Club (BPJ), Babol Branch Islamic Azad University, Babol, Iran.
| | - Hossein Ghorbani
- Department of Pathology, Babol University of Medical Sciences, Babol, Iran
| | - Hamid Reza Bazrafshan
- Department of Neuroendocrinology, Ag Group (Arbeitsgruppe Neuroendokrinologie), Max Planck Institute of Psychiatry, Munich, Germany
| | - Fatemeh Zahra Gharib
- Department of Clinical Sciences, Babol Branch Islamic Azad University, Babol, Iran
| | - Bahareh Korani
- Student Research Committee, Babol University of Medical Sciences, Babol, Iran; Department of Clinical Biochemistry, Tarbiat Modarres University, Tehran, Iran
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Parvez S, Karole A, Mudavath SL. Fabrication, physicochemical characterization and In vitro anticancer activity of nerolidol encapsulated solid lipid nanoparticles in human colorectal cell line. Colloids Surf B Biointerfaces 2022; 215:112520. [PMID: 35489319 DOI: 10.1016/j.colsurfb.2022.112520] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 03/15/2022] [Accepted: 04/21/2022] [Indexed: 12/11/2022]
Abstract
Nerolidol is a sesquiterpene that occurs naturally and possesses a diverse set of biological characteristics including anticancer activity but has limited solubility, bioavailability, and fast hepatic metabolism. The goal of this study was to develop a nanocarrier system encapsulating a bioactive as well as to evaluate its efficacy in Human Colorectal Cell Line. Solid lipid nanoparticles were fabricated by the emulsion solvent evaporation method and determined the particle size, polydispersity index (PDI), zeta potential, % entrapment efficiency, scanning electron microscopy (SEM), transmission electron microscopy (TEM), drug-excipient interaction study of developed nanoparticles. MTT assay was used to assess the cytotoxicity of formulations in vitro. Nerolidol loaded solid lipid nanoparticles (NR-LNPs) have presented satisfactory properties: mean particles diameter of 159 ± 4.89 nm, PDI of 0.32 ± 0.01, the zeta potential value was found to be -10 ± 1.97 and % entrapment efficiency 71.3% ± 6.11. The formulations demonstrated enhanced biological activity due to enhanced solubility and stability of the bioactive after loading into a nanoformulation along with the better internalization inside the cells.
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Affiliation(s)
- Shabi Parvez
- Infectious Disease Biology Laboratory, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India
| | - Archana Karole
- Infectious Disease Biology Laboratory, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India
| | - Shyam Lal Mudavath
- Infectious Disease Biology Laboratory, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India.
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Das N, Parvin MS, Hasan M, Akter M, Hossain MS, Parvez G, Sarker AK, Abdur Rahman MA, Mamun A, Islam ME. A flavone from the ethyl acetate extract of Leea rubra leaves with DNA damage protection and antineoplastic activity. Biochem Biophys Rep 2022; 30:101244. [PMID: 35308071 PMCID: PMC8927975 DOI: 10.1016/j.bbrep.2022.101244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/15/2022] [Accepted: 03/04/2022] [Indexed: 11/03/2022] Open
Abstract
Among the major constituents of Leea rubra (Family Vitaceae) leaves, phenolic and flavonoind compounds are most important for therapeutic purposes and the plant parts have been used in traditional medicine to treat several diseases for long. Thus, in order to scientifically confirm the traditional uses of the L. rubra leaves, the present study was designed to investigate the efficacy of the isolated flavones against AAPH induced oxidative damage to pUC19 DNA by gel electrophoresis and antineoplastic activity was evaluated on Ehrlich ascites carcinoma (EAC) bearing Swiss albino mice by evaluating percentage inhibition of cell growth, morphological changes of EAC cells and hematological parameters of the mice. The isolation was carried out by column chromatography and structure was revealed by 1H-NMR and 13C NMR. The result shows that, the isolated compound was identified as myricetin 4'-methoxy-3-O-α-l-rhamnopyranoside based on previously reported data. The isolated flavone effectively inhibited AAPH-induced oxidative damage to DNA; because it could inhibit the formation of circular and linear forms of the DNA. In anti-proliferative assay, 76% growth inhibition of EAC cells was observed as compare to the control mice (p<0.05) at a dose 100 mg/kg body weight. Thus the isolated flavone showed great importance as a possible therapeutic agent in preventing oxidative damage to DNA and the chronic diseases caused by such DNA damage, and can also become important in cancer chemotherapy. Myricetin 4'-methoxy-3-O-α-l-rhamnopyranoside was isolated from plant Leea rubra. The compound significantly inhibited AAPH-induced oxidative damage to pUC19 DNA. Inhibition of EAC tumor growth in Swiss albino mice model was significant. Hematological parameters in the cancer bearing mice were restored to normal values.
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Silkworm Pupae: A Functional Food with Health Benefits for Humans. Foods 2022; 11:foods11111594. [PMID: 35681343 PMCID: PMC9180533 DOI: 10.3390/foods11111594] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 05/23/2022] [Accepted: 05/27/2022] [Indexed: 11/17/2022] Open
Abstract
Silkworm pupae are insects that are beneficial to human health, not only for their high nutritional value but, more importantly, for the variety of pharmacological functions they can perform when consumed. Currently, there is a lot of interest in the pharmaceutical applications of silkworm pupae. In recent years, the biological functions of domestic silkworm pupae have gradually been identified and confirmed, especially for their beneficial effects on human health. Studies have found that silkworm pupae have positive effects on liver protection, immune enhancement, antiapoptosis, antitumour, antibacterial, regulation of blood glucose and blood lipids, and lowering of blood pressure. However, the pharmacological mechanisms and systemic safety of silkworm pupae have not been systematically evaluated. In this paper, the nutritional composition of the pupae of the domestic silkworm is first summarised. The pharmacological functions of silkworm pupae and their components are then classified, and their mechanisms of occurrence are described. In addition, we provide a preliminary evaluation of the safety of silkworm pupae, analyse their application prospects, and suggest future directions for further pharmacological function studies. The aim is to generate interest in the promotion of human health through the use of silkworm pupae.
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Ayed-Boussema I, Hamdi H, Chaabani H, M’nassri A, Mokni M, Abid S. Fenpyroximate induced cytotoxicity and genotoxicity in Wistar rat brain and in human neuroblastoma (SH-SY5Y) cells: involvement of oxidative stress and apoptosis. Neurotoxicology 2022; 91:177-187. [DOI: 10.1016/j.neuro.2022.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 04/21/2022] [Accepted: 05/11/2022] [Indexed: 11/16/2022]
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Lopez-Sanchez C, Poejo J, Garcia-Lopez V, Salazar J, Garcia-Martinez V, Gutierrez-Merino C. Kaempferol prevents the activation of complement C3 protein and the generation of reactive A1 astrocytes that mediate rat brain degeneration induced by 3-nitropropionic acid. Food Chem Toxicol 2022; 164:113017. [PMID: 35452770 DOI: 10.1016/j.fct.2022.113017] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 04/07/2022] [Accepted: 04/11/2022] [Indexed: 01/30/2023]
Abstract
Kaempferol is a natural antioxidant present in vegetables and fruits used in human nutrition. In previous work, we showed that intraperitoneal (i.p.) kaempferol administration strongly protects against striatum neurodegeneration induced by i.p. injections of 3-nitropropionic acid (NPA), an animal model of Huntington's disease. Recently, we have shown that reactive A1 astrocytes generation is an early event in the neurodegeneration induced by NPA i.p. injections. In the present work, we have experimentally evaluated the hypothesis that kaempferol protects both against the activation of complement C3 protein and the generation of reactive A1 astrocytes in rat brain striatum and hippocampus. To this end, we have administered NPA and kaempferol i.p. injections to adult Wistar rats following the protocol described in previous work. Kaempferol administration prevents proteolytic activation of complement C3 protein and generation of reactive A1 astrocytes NPA-induced in the striatum and hippocampus. Also, it blocked the NPA-induced increase of NF-κB expression and enhanced secretion of cytokines IL-1α, TNFα, and C1q, which have been linked to the generation of reactive A1 astrocytes. In addition, kaempferol administration prevented the enhanced production of amyloid β peptides in the striatum and hippocampus, a novel finding in NPA-induced brain degeneration found in this work.
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Affiliation(s)
- Carmen Lopez-Sanchez
- Instituto de Biomarcadores de Patologías Moleculares, Universidad de Extremadura, 06006, Badajoz, Spain; Departamento de Anatomía y Embriología Humana, Facultad de Medicina, Universidad de Extremadura, 06006, Badajoz, Spain.
| | - Joana Poejo
- Instituto de Biomarcadores de Patologías Moleculares, Universidad de Extremadura, 06006, Badajoz, Spain
| | - Virginio Garcia-Lopez
- Instituto de Biomarcadores de Patologías Moleculares, Universidad de Extremadura, 06006, Badajoz, Spain; Departamento de Anatomía y Embriología Humana, Facultad de Medicina, Universidad de Extremadura, 06006, Badajoz, Spain
| | - Jairo Salazar
- Instituto de Biomarcadores de Patologías Moleculares, Universidad de Extremadura, 06006, Badajoz, Spain; Departamento de Química, Universidad Nacional Autónoma de Nicaragua-León, León, 21000, Nicaragua
| | - Virginio Garcia-Martinez
- Instituto de Biomarcadores de Patologías Moleculares, Universidad de Extremadura, 06006, Badajoz, Spain; Departamento de Anatomía y Embriología Humana, Facultad de Medicina, Universidad de Extremadura, 06006, Badajoz, Spain
| | - Carlos Gutierrez-Merino
- Instituto de Biomarcadores de Patologías Moleculares, Universidad de Extremadura, 06006, Badajoz, Spain; Departamento de Bioquímica y Biología Molecular y Genética, Facultad de Ciencias, Universidad de Extremadura, 06006, Badajoz, Spain.
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The Role of Melatonin on Behavioral Changes and Concomitant Oxidative Stress in icvAβ 1-42 Rat Model with Pinealectomy. Int J Mol Sci 2021; 22:ijms222312763. [PMID: 34884567 PMCID: PMC8657444 DOI: 10.3390/ijms222312763] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/16/2021] [Accepted: 11/22/2021] [Indexed: 02/06/2023] Open
Abstract
One of the pathological hallmarks of Alzheimer’s disease (AD) associated with its progression that contributes to β-amyloid (Aβ) generation is oxidative stress (OS). Clinical data suggest that melatonin is a potent antioxidant that might be effective in the adjunctive therapy of this neurodegenerative disease. The present study aimed to explore the role of melatonin on behavioral changes and markers of OS in three rat models, namely, pinealectomy (pin) model of melatonin deficit, intracerebroventricular (icv)Aβ1-42 model of AD, and combination of both pin and Aβ1-42 model (pin+icvAβ1-42). The chronic injection with vehicle/melatonin (50 mg/kg, i.p. for 40 days) started on the same day of sham/pin and icv vehicle/Aβ1-42 infusion procedures. Anxiety in the open field and the elevated plus-maze test and cognitive responses in the object recognition test were tested between the 30th–35th day after the surgical procedures. Markers of OS in the frontal cortex (FC) and hippocampus were detected by the ELISA method. Melatonin treatment corrected the exacerbated anxiety response only in the pin+icvAβ1-42 model while it alleviated the cognitive impairment in the three models. Pinealectomy disturbed the antioxidant system via enhanced SOD activity and decreased GSH levels both in the FC and hippocampus. The Aβ1-42 model decreased the SOD activity in the FC and elevated the MDA level in the two brain structures. The pin+icvAβ1-42 model impaired the antioxidant system and elevated lipid peroxidation. Melatonin supplementation restored only the elevated MDA level of icvAβ1-42 and pin+icvAβ1-42 model in the hippocampus. In conclusion, our study reveals that the pin+icvAβ1-42 rat model triggers more pronounced anxiety and alterations in markers of OS that may be associated with melatonin deficit concomitant to icvAβ1-42-induced AD pathology.
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A Simple HPLC/DAD Method Validation for the Quantification of Malondialdehyde in Rodent's Brain. Molecules 2021; 26:molecules26165066. [PMID: 34443656 PMCID: PMC8400166 DOI: 10.3390/molecules26165066] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 08/18/2021] [Accepted: 08/19/2021] [Indexed: 01/31/2023] Open
Abstract
In the present study, a HPLC/DAD method was set up to allow for the determination and quantification of malondialdehyde (MDA) in the brain of rodents (rats). Chromatographic separation was achieved on Supelcosil LC-18 (3 μm) SUPELCO Column 3.3 cm × 4.6 mm and Supelco Column Saver 0.5 μm filter by using a mobile phase acetonitrile (A) and phosphate buffer (20 mM, pH = 6) (B). Isocratic elution was 14% for (A) and 86% for (B). The injection volume (loop mode) was 100 μL with an analysis time of 1.5 min. Flow rate was set at 1 mL/min. The eluted compound was detected at 532 nm by a DAD detector by keeping the column oven at room temperature. The results indicated that the method has good linearity in the range of 0.2-20 μg/g. Both intra- and inter-day precision, expressed as RSD, were ≤15% and the accuracies ranged between ±15%. The lower limit of quantification (LLOQ), stability, and robustness were evaluated and satisfied the validation criteria. The method was successfully applied in a study of chronic toxicology following different treatment regimens with haloperidol and metformin.
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Xu C, Guo J, Li L, Wang X, Zhou Q, Sun D, Zhang S, Li S, Ye J, Liu Y, Liu E, Zeng P, Wang X, Yang Y, Wang JZ. Co-Expression of Three Wild-Type 3R-Tau Isoforms Induces Memory Deficit via Oxidation-Related DNA Damage and Cell Death: A Promising Model for Tauopathies. J Alzheimers Dis 2021; 73:1105-1123. [PMID: 31884489 DOI: 10.3233/jad-191132] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The three isoforms of 3R-tau are predominantly deposited in neurons bearing neurofibrillary tangles in Alzheimer's disease (AD), while only 3R-tau accumulation has been detected in Pick's disease (PiD), suggesting the involvement of 3R-tau in neurodegeneration. However, both the role and the molecular mechanism of 3R-tau in neurodegeneration are elusive. Here, we co-expressed three isoforms of human wild-type 3R-tau in adult mouse hippocampal to mimic the pathologic tau accumulating observed in PiD patients. We found that co-expressing three 3R-tau isoforms induced hyperphosphorylation and accumulation of tau proteins; simultaneously, the mice showed remarkable neuron death with synapse and memory deficits. Further in vitro and in vivo studies demonstrated that co-expressing 3R-tau isoforms caused oxidative stress evidenced by an increased malondialdehyde, and the decreased superoxide dismutase and glutathione peroxidase; the 3R-tau accumulation also induced significant glial activation and DNA double-strand breaks (DSBs). Notably, the toxic effects of 3R-tau accumulation were efficiently reversed by administration of antioxidants Vitamin E (VitE) and Vitamin C (VitC), respectively. These data reveal that intracellular accumulation of 3R-tau isoforms in adult brain induces significant neuron death and memory deficits with the mechanism involving oxidation-mediated DSBs; and the antioxidants VitE and VitC can efficiently attenuate the toxicities of 3R-tau. Given that no significant cell death has been detected in the currently available wild-type tau-accumulating models, co-expressing 3R-tau isoforms could be a promising model for drug development of tauopathies, such as PiD.
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Affiliation(s)
- Cheng Xu
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Jing Guo
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Li Li
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China.,Department of Physiology, Hubei University of Chinese Medicine, Wuhan, China
| | - Xin Wang
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Qiuzhi Zhou
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Dongsheng Sun
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Shujuan Zhang
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Shihong Li
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Jinwang Ye
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Yanchao Liu
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Enjie Liu
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Peng Zeng
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Xiaochuan Wang
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Ying Yang
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Jian-Zhi Wang
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China.,Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
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20
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Lapatinib ditosylate rescues memory impairment in D-galactose/ovariectomized rats: Potential repositioning of an anti-cancer drug for the treatment of Alzheimer's disease. Exp Neurol 2021; 341:113697. [PMID: 33727095 DOI: 10.1016/j.expneurol.2021.113697] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 02/08/2021] [Accepted: 03/11/2021] [Indexed: 12/16/2022]
Abstract
Epidermal growth factor receptor (EGFR) signaling plays a substantial role in learning and memory. The upregulation of EGFR has been embroiled in the pathophysiology of Alzheimer's disease (AD). Nevertheless, most of EGFR-tyrosine kinase inhibitors (EGFR-TKIs) have been extensively studied for non-CNS diseases such as cancer and rheumatoid arthritis. TKIs targeting-based research in neurodegenerative disorders sounds to be lagging behind those of other diseases. Hence, this study aims to explore the molecular signaling pathways and the efficacy of treatment with lapatinib ditosylate (LAP), as one of EGFR-TKIs that has not yet been investigated in AD, on cognitive decline induced by ovariectomy (OVX) with chronic administration of D-galactose (D-gal) in female Wistar albino rats. OVX rats were injected with 150 mg/kg/day D-gal ip for 8 weeks to induce AD. Administration of 100 mg/kg/day LAP p.o. for 3 weeks starting after the 8th week of D-gal administration improved memory and debilitated histopathological alterations. LAP decreased the expression of GFAP, p-tau, and Aβ 1-42. Besides, it reduced EGFR, HER-2, TNF-α, NOX-1, GluR-II, p38 MAPK, and p-mTOR. LAP increased nitrite, and neuronal pro-survival transduction proteins; p-PI3K, p-AKT, and p-GSK-3β levels. Taken together, these findings suggest the role of LAP in ameliorating D-gal-induced AD in OVX rats via activating the pro-survival pathway; PI3K-Akt-GSK-3β, while inhibiting p-mTOR, NOX-1, and p38 MAPK pathways. Moreover, this research offered a significant opportunity to advance awareness of the repositioning of TKI anti-cancer drugs for the treatment of AD.
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21
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Zhan-Qiang H, Hai-Hua Q, Chi Z, Miao W, Cui Z, Zi-Yin L, Jing H, Yi-Wei W. miR-146a aggravates cognitive impairment and Alzheimer disease-like pathology by triggering oxidative stress through MAPK signaling. Neurologia 2021; 38:S0213-4853(21)00022-0. [PMID: 33715884 DOI: 10.1016/j.nrl.2020.12.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 12/14/2020] [Accepted: 12/26/2020] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Mir-146a-5p has been widely recognized as a critical regulatory element in the immune response. However, recent studies have shown that miR-146a-5p may also be involved in the development of Alzheimer disease (AD). Regrettably, the related mechanisms are poorly understood. Here, we investigated the effects of miR-146a in mice models and SH-SY5Y cells treated with amyloid β (Aβ)1-42. METHODS To create a model of AD, SH-SY5Y cells were treated with Aβ1-42 and mice received intracerebroventricular injections of Aβ1-42. Then, the transcriptional levels of miR-146a were estimated by real-time PCR. We transiently transfected the miR-146a-5p mimic/inhibitor into cells and mice to study the role of miR-146a. The role of signaling pathways including p38 and reactive oxygen species (ROS) was studied by using specific inhibitors. Aβ and amyloid-beta precursor protein (APP)levels were measured by immunoblotting. Furthermore, Aβ expression was analyzed by immunofluorescence and histochemical examinations. RESULTS Aβ1-42-stimulated SH-SY5Y cells displayed increased transcriptional levels of miR-146a and APP. Moreover, the p38 MAPK signaling pathway and ROS production were activated upon stimulation with a miR-146a-5p mimic. However, treatment with a miR-146a-5p inhibitor decreased the levels of APP, ROS, and p-p38 MAPK. A similar phenomenon was also observed in the animals treated with Aβ1-42, in which miR-146a upregulation increased the expression of Aβ, p-p38, and ROS, while the inhibition of miR-146a had the opposite effect. This suggests that miR-146a increases Aβ deposition and ROS accumulation via the p-p38 signaling pathway. CONCLUSIONS Our research demonstrates that miR-146a-5pa increases Aβ deposition by triggering oxidative stress through activation of MAPK signaling.
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Affiliation(s)
- H Zhan-Qiang
- Department of General medicine, Affiliated Hospital of Chengde Medical College, Chengde 067000, China
| | - Q Hai-Hua
- Department of Dermatology, Affiliated Hospital of Chengde Medical College, Chengde 067000, China
| | - Z Chi
- Department of Neurology, Affilicated Hospital of Chengde Medical College, Chengde 067000, China
| | - W Miao
- Department of General medicine, Affiliated Hospital of Chengde Medical College, Chengde 067000, China
| | - Z Cui
- Department of General medicine, Affiliated Hospital of Chengde Medical College, Chengde 067000, China
| | - L Zi-Yin
- Department of General medicine, Affiliated Hospital of Chengde Medical College, Chengde 067000, China
| | - H Jing
- Department of General medicine, Affiliated Hospital of Chengde Medical College, Chengde 067000, China
| | - W Yi-Wei
- Department of General medicine, Affiliated Hospital of Chengde Medical College, Chengde 067000, China.
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Işık M, Beydemir Ş. The impact of some phenolic compounds on serum acetylcholinesterase: kinetic analysis of an enzyme/inhibitor interaction and molecular docking study. J Biomol Struct Dyn 2020; 39:6515-6523. [DOI: 10.1080/07391102.2020.1801509] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Mesut Işık
- Department of Pharmacy Services, Vocational School of Health Services, Harran University, Şanlıurfa, Turkey
| | - Şükrü Beydemir
- Department of Biochemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
- The Rectorate of Bilecik Şeyh Edebali University, Bilecik, Turkey
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23
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Adefegha SA, Okeke BM, Oboh G. Antioxidant properties of eugenol, butylated hydroxylanisole, and butylated hydroxyl toluene with key biomolecules relevant to Alzheimer's diseases-In vitro. J Food Biochem 2020; 45:e13276. [PMID: 32458455 DOI: 10.1111/jfbc.13276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 04/08/2020] [Accepted: 04/15/2020] [Indexed: 11/27/2022]
Abstract
This research work examined and likened effect of eugenol a natural phenolic compound with butylated hydroxylanisole (BHA) and butylated hydroxyl toluene (BHT) synthetic phenolic compounds with key biomolecules [acetylcholinesterase (AChE), butyrylcholinesterase (BChE), and monoamine oxidase (MAO)] relevant to Alzheimer's diseases (AD) in vitro. Ten millimolar each sample was prepared in a mixture of ethanol and water (1:1 v/v), and the interactions with AChE, BChE, and MAO were evaluated. Still, ferric reducing antioxidant property, ABTS radicals scavenging ability and lipid peroxidation were carried out. The results revealed eugenol, BHT, and BHA inhibited AChE, BChE, and MAO activities dose-dependently. Though, eugenol had greater inhibitory effect against AChE and BChE activities. Also, eugenol demonstrated higher antioxidant potential compared to BHT and BHA. The potent enzymatic inhibitory and antioxidant effects of eugenol indicate eugenol could be promising as an alternative food additive and neuromodulator in AD management. PRACTICAL APPLICATION: BHT and BHA are synthetic antioxidant employed industrially as food preservative. BHT and BHA are employed in food packaging, drugs, and cosmetics. Although BHT and BHA are widely in use but have been found were associated with alteration in sleeping, induced changes in brain serotonin and norepinephrine levels with increased cholinesterase activity. Endocrine disrupting effects, reproductive disorder is more side effects associated with the use of BHT and BHA. However, eugenol a natural compound found in plants compares favorably with BHT and BHA as antioxidant with many more health promoting benefits such as neuroprotective effects, antiapoptotic effects, and prevent aluminum toxicity. Eugenol being a natural antioxidant with no side effects showing more promising effects over the synthetic phenolic compounds and could be an alternative for the BHT and BHA.
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Affiliation(s)
- Stephen A Adefegha
- Functional Foods, Nutraceuticals and Phytomedicine Laboratory, Department of Biochemistry, Federal University of Technology Akure, Akure, Nigeria
| | - Bathlomew M Okeke
- Functional Foods, Nutraceuticals and Phytomedicine Laboratory, Department of Biochemistry, Federal University of Technology Akure, Akure, Nigeria
| | - Ganiyu Oboh
- Functional Foods, Nutraceuticals and Phytomedicine Laboratory, Department of Biochemistry, Federal University of Technology Akure, Akure, Nigeria
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Strac DS, Konjevod M, Perkovic MN, Tudor L, Erjavec GN, Pivac N. Dehydroepiandrosterone (DHEA) and its Sulphate (DHEAS) in Alzheimer's Disease. Curr Alzheimer Res 2020; 17:141-157. [PMID: 32183671 DOI: 10.2174/1567205017666200317092310] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/20/2020] [Accepted: 01/26/2020] [Indexed: 01/01/2023]
Abstract
BACKGROUND Neurosteroids Dehydroepiandrosterone (DHEA) and Dehydroepiandrosterone Sulphate (DHEAS) are involved in many important brain functions, including neuronal plasticity and survival, cognition and behavior, demonstrating preventive and therapeutic potential in different neuropsychiatric and neurodegenerative disorders, including Alzheimer's disease. OBJECTIVE The aim of the article was to provide a comprehensive overview of the literature on the involvement of DHEA and DHEAS in Alzheimer's disease. METHODS PubMed and MEDLINE databases were searched for relevant literature. The articles were selected considering their titles and abstracts. In the selected full texts, lists of references were searched manually for additional articles. RESULTS We performed a systematic review of the studies investigating the role of DHEA and DHEAS in various in vitro and animal models, as well as in patients with Alzheimer's disease, and provided a comprehensive discussion on their potential preventive and therapeutic applications. CONCLUSION Despite mixed results, the findings of various preclinical studies are generally supportive of the involvement of DHEA and DHEAS in the pathophysiology of Alzheimer's disease, showing some promise for potential benefits of these neurosteroids in the prevention and treatment. However, so far small clinical trials brought little evidence to support their therapy in AD. Therefore, large-scale human studies are needed to elucidate the specific effects of DHEA and DHEAS and their mechanisms of action, prior to their applications in clinical practice.
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Affiliation(s)
- Dubravka S Strac
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Rudjer Boskovic Institute, Zagreb, Croatia
| | - Marcela Konjevod
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Rudjer Boskovic Institute, Zagreb, Croatia
| | - Matea N Perkovic
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Rudjer Boskovic Institute, Zagreb, Croatia
| | - Lucija Tudor
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Rudjer Boskovic Institute, Zagreb, Croatia
| | - Gordana N Erjavec
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Rudjer Boskovic Institute, Zagreb, Croatia
| | - Nela Pivac
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Rudjer Boskovic Institute, Zagreb, Croatia
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Martins N, Heleno SA, Ferreira ICFR. An Upcoming Approach to Alzheimer's Disease: Ethnopharmacological Potential of Plant Bioactive Molecules. Curr Med Chem 2020; 27:4344-4371. [PMID: 32072889 DOI: 10.2174/0929867327666200219120806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Revised: 01/29/2020] [Accepted: 02/03/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Neurodegenerative disorders have achieved epidemic levels in the last decades; not only the elderly but also adult individuals have been increasingly affected. Among them, Alzheimer's disease is one of the most prevalent and crippling diseases, associated with high rates of multi-morbidities and dependency. Despite the existence of a wide variety of drugs used as the symptomatic treatment, they have some side effects and toxicity, apart from their limited effectiveness. Botanical preparations have a secular use, being widely recommended for a multitude of purposes, such as for the improvement of brain health. OBJECTIVE The aim of the present report is to systematize the knowledge on plant-food derived bioactive molecules with promising in vitro enzymatic inhibitory activities. RESULTS Alkaloids, phenolic compounds and terpenes are the most studied phytochemicals, both derived from natural and commercial sources. In spite of their efficient activity as enzymatic inhibitors, the number of in vivo studies and even clinical trials have confirmed that their real bioactive potential remains scarce. CONCLUSION Thus, it is of the utmost importance to deepen knowledge in this area, once those relevant and informative tools can significantly contribute to the promising advances in the field of Alzheimer's disease treatment.
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Affiliation(s)
- Natália Martins
- Centro de Investigacao de Montanha (CIMO), Instituto Politecnico de Braganca, Campus de Santa Apolonia, 5300-253 Braganca, Portugal
| | - Sandrina A Heleno
- Centro de Investigacao de Montanha (CIMO), Instituto Politecnico de Braganca, Campus de Santa Apolonia, 5300-253 Braganca, Portugal
| | - Isabel C F R Ferreira
- Centro de Investigacao de Montanha (CIMO), Instituto Politecnico de Braganca, Campus de Santa Apolonia, 5300-253 Braganca, Portugal
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Livny A, Schnaider Beeri M, Heymann A, Moshier E, Berman Y, Mamistalov M, Shahar DR, Tsarfaty G, Leroith D, Preiss R, Soleimani L, Silverman JM, Bendlin BB, Levy A, Ravona-Springer R. Vitamin E Intake Is Associated with Lower Brain Volume in Haptoglobin 1-1 Elderly with Type 2 Diabetes. J Alzheimers Dis 2020; 74:649-658. [PMID: 32065799 DOI: 10.3233/jad-191294] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUNDS The efficacy of vitamin E in prevention of diabetes-related complications differs by Haptoglobin (Hp) genotype. OBJECTIVE To examine the role of Hp genotype in the relationship of vitamin E intake with brain volume in cognitively normal elderly patients with type 2 diabetes. METHODS Brain volumes for the superior, middle, and inferior frontal gyri and for the middle temporal gyrus were generated from structural T1 MRI in 181 study participants (Hp 1-1: n = 24, Hp 2-1: n = 77, Hp 2-2: n = 80). Daily vitamin E intake was assessed using the Food Frequency Questionnaire. Analyses of covariance, controlling for demographic and cardiovascular variables was used to evaluate whether the association of daily vitamin E intake with brain volume was modified by Hp genotype. RESULTS Average age was 70.8 (SD = 4.2) with 40% females, and mean Mini-Mental State Examination score of 28.17 (SD = 1.90). A significant interaction was found between vitamin E intake and Hp genotype in inferior frontal gyrus' volume; p = 0.0108. For every 1 microgram increase in vitamin E intake, the volume of the inferior frontal gyrus decreased by 0.955% for Hp 1-1 (p = 0.0348), increased by 0.429% for Hp 2-1 (p = 0.0457), and by 0.077% for Hp 2-2 (p = 0.6318). There were no significant interactions between vitamin E intake and Hp genotype for the middle (p = 0.6011) and superior (p = 0.2025) frontal gyri or for the middle temporal gyrus (p = 0.503). CONCLUSIONS The effect of dietary vitamin E on the brain may differ by Hp genotype. Studies examining the impact of vitamin E on brain-related outcomes should consider Hp genotype.
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Affiliation(s)
- Abigail Livny
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel.,Division of Diagnostic Imaging, Sheba Medical Center, Tel-Hashomer, Israel
| | - Michal Schnaider Beeri
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel.,The Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Baruch Ivcher School of Psychology, Interdisciplinary Center, Herzliya, Israel
| | - Anthony Heymann
- Department of Family Medicine, Tel Aviv University, Tel Aviv, Israel.,Maccabi Health Services, Israel
| | - Erin Moshier
- Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Yuval Berman
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel
| | - Mary Mamistalov
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel
| | | | - Galia Tsarfaty
- Division of Diagnostic Imaging, Sheba Medical Center, Tel-Hashomer, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Derek Leroith
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Laili Soleimani
- The Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jeremy M Silverman
- The Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Barbara B Bendlin
- Wisconsin Alzheimer's Disease Research Center, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Andrew Levy
- Rambam Medical Center, Technion, Haifa, Israel
| | - Ramit Ravona-Springer
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Psychiatric Division, Sheba Medical Center, Tel-Hashomer, Israel
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27
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Phenolic profiling and anti-Alzheimer’s evaluation of Eremobium aegyptiacum. ADVANCES IN TRADITIONAL MEDICINE 2020. [DOI: 10.1007/s13596-019-00408-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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28
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Garcia RCT, Torres LL, Dati LMM, Loureiro APDM, Afeche SC, Sandoval MRL, Marcourakis T. Anhydroecgonine methyl ester (AEME), a cocaine pyrolysis product, impairs glutathione-related enzymes response and increases lipid peroxidation in the hippocampal cell culture. Toxicol Rep 2019; 6:1223-1229. [PMID: 31768333 PMCID: PMC6872858 DOI: 10.1016/j.toxrep.2019.11.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 09/27/2019] [Accepted: 11/01/2019] [Indexed: 02/06/2023] Open
Abstract
AEME and cocaine decreased GPx, GR and GST activities after 3 and 6 h of exposure. AEME and cocaine increased MDA after 48 h of exposure. AEME-cocaine combination decreased GPx, GR and GST activities after 3 and 6 h. AEME-cocaine combination showed an additive effect on MDA after 48 h of exposure. A higher neurotoxic effect after crack cocaine use is suggested.
Crack cocaine smokers inhale, alongside with cocaine, its pyrolysis product, anhydroecgonine methyl ester (AEME). We have previously described AEME neurotoxic effect and its additive effect when co-incubated with cocaine. Our aim was to evaluate, the effect of AEME, cocaine and AEME-cocaine combination on glutathione peroxidase (GPx), glutathione reductase (GR) and glutathione S-transferase (GST) activities after 3 and 6 h of exposure, periods previous to neuronal death. Lipid peroxidation was evaluated through malonaldehyde (MDA) levels at 3, 6, 24 and 48 h of exposure. All treated groups reduced neuronal viability after 24 h of exposure. AEME and cocaine decreased GPx, GR and GST activities after 3 and 6 h, with an increase in MDA levels after 48 h. AEME-cocaine combination decreased the enzymes activities after 3 and 6 h, showing an additive effect in MDA levels after 48 h. These data show that the glutathione-related enzymes imbalance caused by AEME, cocaine or AEME-cocaine combination exposure preceded neuronal death and lipid peroxidation. Moreover, the additive effect on lipid peroxidation observed with AEME-cocaine exposure after 48 h, suggest a higher neurotoxic effect after crack cocaine use when compared to cocaine alone.
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Affiliation(s)
- Raphael Caio Tamborelli Garcia
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580, Bl. 13B, 05508-000 São Paulo, SP, Brazil.,Department of Pharmaceutical Sciences, Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, Rua São Nicolau, 210, 1° andar, 09913-030 Diadema, SP, Brazil
| | - Larissa Lobo Torres
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580, Bl. 13B, 05508-000 São Paulo, SP, Brazil.,Department of Food and Drugs, School of Pharmaceutical Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, 37130-001 Alfenas, MG, Brazil
| | - Livia Mendonça Munhoz Dati
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580, Bl. 13B, 05508-000 São Paulo, SP, Brazil
| | - Ana Paula de Melo Loureiro
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580, Bl. 13B, 05508-000 São Paulo, SP, Brazil
| | - Solange Castro Afeche
- Laboratory of Pharmacology, Butantan Institute, Av. Vital Brasil, 1500, 05503-900, São Paulo, SP, Brazil
| | | | - Tania Marcourakis
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580, Bl. 13B, 05508-000 São Paulo, SP, Brazil
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Kim KH, Cho Y, Lee J, Jeong H, Lee Y, Kim SI, Kim CH, Lee HW, Nam KT. Sexually dimorphic leanness and hypermobility in p16 Ink4a/CDKN2A-deficient mice coincides with phenotypic changes in the cerebellum. Sci Rep 2019; 9:11167. [PMID: 31371816 PMCID: PMC6671985 DOI: 10.1038/s41598-019-47676-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 07/22/2019] [Indexed: 12/31/2022] Open
Abstract
p16Ink4a/CDKN2A is a tumor suppressor that critically regulates the cell cycle. Indeed, p16Ink4a deficiency promotes tumor formation in various tissues. We now report that p16Ink4a deficiency in female mice, but not male mice, induces leanness especially in old age, as indicated by lower body weight and smaller white adipose tissue, although other major organs are unaffected. Unexpectedly, the integrity, number, and sizes of adipocytes in white adipose tissue were unaffected, as was macrophage infiltration. Hence, hypermobility appeared to be accountable for the phenotype, since food consumption was not altered. Histological analysis of the cerebellum and deep cerebellar nuclei, a vital sensorimotor control center, revealed increased proliferation of neuronal cells and improved cerebellum integrity. Expression of estrogen receptor β (ERβ) and PCNA also increased in deep cerebellar nuclei, implying crosstalk between p16Ink4a and ERβ. Furthermore, p16Ink4a deficiency expands LC3B+ cells and GFAP+ astrocytes in response to estrogen. Collectively, the data suggest that loss of p16INK4a induces sexually dimorphic leanness in female mice, which appears to be due to protection against cerebellar senescence by promoting neuronal proliferation and homeostasis via ERβ.
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Affiliation(s)
- Kwang H Kim
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Yejin Cho
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Jaehoon Lee
- Department of Biochemistry, College of Life Science and Biotechnology and Yonsei Laboratory Animal Research Center, Yonsei University, Seoul, 03722, Republic of Korea
| | - Haengdueng Jeong
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Yura Lee
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Soo In Kim
- Department of Otorhinolaryngology, Korea Mouse Sensory Phenotyping Center, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Chang-Hoon Kim
- Department of Otorhinolaryngology, Korea Mouse Sensory Phenotyping Center, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Han-Woong Lee
- Department of Biochemistry, College of Life Science and Biotechnology and Yonsei Laboratory Animal Research Center, Yonsei University, Seoul, 03722, Republic of Korea
| | - Ki Taek Nam
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea.
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30
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Liu GK, Li X, Qin WB, Peng XS, Wong HNC, Zhang L, Zhang X. Facile difluoromethylation of aliphatic alcohols with an S-(difluoro-methyl)sulfonium salt: reaction, scope and mechanistic study. Chem Commun (Camb) 2019; 55:7446-7449. [PMID: 31165809 DOI: 10.1039/c9cc03487k] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A facile and practical approach for the difluoromethylation of aliphatic alcohols with an S-(difluoromethyl)sulfonium salt was developed. A wide variety of alcohols with broad functional groups are compatible to furnish the corresponding alkyl difluoromethyl ethers in good to excellent yields under mild reaction conditions. Control experiments and DFT computational studies suggest that the difluoromethylation of alcohols mainly proceeds via a difluorocarbene pathway involving a five-membered transition state with the participation of water, whose crucial role in this reaction was also elucidated by control experiments.
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Affiliation(s)
- Guo-Kai Liu
- School of Pharmaceutical Sciences, Shenzhen University Health Science Centre, Shenzhen University, 3688 Nanhai Ave., Shenzhen 518060, China.
| | - Xin Li
- School of Pharmaceutical Sciences, Shenzhen University Health Science Centre, Shenzhen University, 3688 Nanhai Ave., Shenzhen 518060, China.
| | - Wen-Bing Qin
- School of Pharmaceutical Sciences, Shenzhen University Health Science Centre, Shenzhen University, 3688 Nanhai Ave., Shenzhen 518060, China.
| | - Xiao-Shui Peng
- Department of Chemistry, the Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Henry N C Wong
- Department of Chemistry, the Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Linxing Zhang
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Xinhao Zhang
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
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31
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Bioactive compounds from by-products of rice cultivation and rice processing: Extraction and application in the food and pharmaceutical industries. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.02.041] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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32
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Xu L, Zhang W, Liu X, Zhang C, Wang P, Zhao X. Circulatory Levels of Toxic Metals (Aluminum, Cadmium, Mercury, Lead) in Patients with Alzheimer's Disease: A Quantitative Meta-Analysis and Systematic Review. J Alzheimers Dis 2019; 62:361-372. [PMID: 29439342 DOI: 10.3233/jad-170811] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND Environmental exposure to toxic metals has been postulated to play a role in the pathophysiological processes of Alzheimer's disease (AD). However, the circulatory levels of toxic metals in AD patients are not consistent in previous studies. OBJECTIVE To systematically assess levels of toxic metals (aluminum, mercury, cadmium, lead) in the circulation (blood, serum/plasma) of AD patients and controls. METHODS PubMed, Web of Science, Science Direct, Cochrane Library, and the China National Knowledge Infrastructure (CNKI) were systematically searched to identify studies published up to January 1, 2017. Meta-analyses were performed using random-effects models and the pooled standardized mean difference (SMD) were reported with 95% confidence intervals (CI). RESULTS We identified 17, 7, 8, and 10 studies for aluminum, mercury, cadmium, and lead, respectively. Meta-analyses showed significantly elevated circulatory levels of aluminum (SMD = 1.08, 95% CI: 0.66, 1.50), mercury (SMD = 0.55, 95% CI, 0.15, 0.95), and cadmium (SMD = 0.62, 95% CI: 0.12, 1.11), whereas lower levels of lead (SMD = -0.23, 95% CI: -0.38, -0.07) in AD patients than in controls. Publication bias was only observed for aluminum studies, but the "trim and fill" analysis showed that the publication bias did not alter the direction of the effect. Sensitivity analyses showed no studies from the pooled analysis changed the results. CONCLUSION Compared to controls, circulatory levels of aluminum, mercury, and cadmium are significantly higher but the levels of lead were reduced in AD patients. These findings suggest that elevated aluminum, mercury, and cadmium in the circulation, especially in serum may play a role in the progression of AD.
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Affiliation(s)
- Lin Xu
- Department of Toxicology, School of Public Health, Shandong University, Jinan, China
| | - Wenchao Zhang
- Department of Epidemiology, School of Public Health, Shandong University, Jinan, China
| | - Xianchen Liu
- Department of Clinical Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Cuili Zhang
- Department of Toxicology, School of Public Health, Shandong University, Jinan, China
| | - Pin Wang
- Department of Neurology, The Second Hospital of Shandong University, Jinan, China
| | - Xiulan Zhao
- Department of Toxicology, School of Public Health, Shandong University, Jinan, China
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. K, . Y, Bais S. Neuroprotective Effect of Protocatechuic Acid Through MAO-B Inhibition in Aluminium Chloride Induced Dementia of Alzheimer’s Type in Rats. INT J PHARMACOL 2018. [DOI: 10.3923/ijp.2018.879.888] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Agrawal M, Saraf S, Saraf S, Antimisiaris SG, Chougule MB, Shoyele SA, Alexander A. Nose-to-brain drug delivery: An update on clinical challenges and progress towards approval of anti-Alzheimer drugs. J Control Release 2018; 281:139-177. [DOI: 10.1016/j.jconrel.2018.05.011] [Citation(s) in RCA: 203] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/10/2018] [Accepted: 05/10/2018] [Indexed: 01/02/2023]
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35
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Oboh G, Adebayo AA, Ejakpovi II, Ogunsuyi OB, Boligon AA. Phenolic profiling and in vitro antioxidant, anticholinesterase, and antimonoamine oxidase properties of aqueous extract of African star apple (Chrysophyllum albidum) fruit parts. J Food Biochem 2018. [DOI: 10.1111/jfbc.12568] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ganiyu Oboh
- Functional Foods and Nutraceutical Unit, Biochemistry Department; Federal University of Technology, P.M.B. 704; Akure 340001 Nigeria
| | - Adeniyi A. Adebayo
- Functional Foods and Nutraceutical Unit, Biochemistry Department; Federal University of Technology, P.M.B. 704; Akure 340001 Nigeria
| | - Isaac I. Ejakpovi
- Functional Foods and Nutraceutical Unit, Biochemistry Department; Federal University of Technology, P.M.B. 704; Akure 340001 Nigeria
| | - Opeyemi B. Ogunsuyi
- Functional Foods and Nutraceutical Unit, Biochemistry Department; Federal University of Technology, P.M.B. 704; Akure 340001 Nigeria
- Department of Biomedical Technology, School of Health and Health Technology; Federal University of Technology, P.M.B. 704; Akure 340001 Nigeria
| | - Aline A. Boligon
- Phytochemical Research Laboratory, Department of Industrial Pharmacy; Federal University of Santa Maria, Build 26, room 1115; Santa Maria CEP 97105-900 Brazil
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Ojo OA, Ojo AB, Ajiboye BO, Oyinloye BE, Akinyemi AJ, Okesola MA, Boligon AA, de Campos MMA. Chromatographic fingerprint analysis, antioxidant properties, and inhibition of cholinergic enzymes (acetylcholinesterase and butyrylcholinesterase) of phenolic extracts from Irvingia gabonensis (Aubry-Lecomte ex O'Rorke) Baill bark. J Basic Clin Physiol Pharmacol 2018; 29:217-224. [PMID: 29381472 DOI: 10.1515/jbcpp-2017-0063] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 12/15/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Irvingia gabonensis stem bark is a medicinal plant used in most parts of Africa to manage a number of ailments including neurodegenerative diseases that occur without scientific basis. This work characterized the phenolic composition, evaluated the cholinergic enzymes (acetylcholinesterase, AChE and butyrylcholinesterase, BChE) inhibition, and assessed the antioxidant activity of phenolic extracts from I. gabonensis (Aubry-Lecomte ex O'Rorke) Baill bark. METHODS Total phenol and flavonoids content was evaluated in addition to antioxidant activity as shown by Fe2+ chelation, 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging ability, and 2,2-azino-bis-(3-ethylbenthiazoline-6-sulfonic acid) (ABTS) radical scavenging ability. Inhibitory activities on AChE and BChE were evaluated. RESULTS The extract was found to be rich in phenolic acid (ellagic acid) and flavonoids (quercetrin, kaempferol, and apigenin). The phenolic extracts displayed DPPH radical scavenging ability (IC50=19.98 μg/mL), ABTS radical scavenging ability (IC50=18.25 μg/mL), iron chelation (IC50=113.10 μg/mL), and reducing power (Fe3+ to Fe2+) (5.94 mg ascorbic acid equivalent/100 g). Extracts of I. gabonensis inhibited AChE (IC50=32.90 μg/mL) and BChE (IC50=41.50 μg/mL) activities in concentration-dependent manner. CONCLUSIONS Hence, possible mechanism through which the stem bark executes their anti-Alzheimer's disease activity might be by inhibiting cholinesterase activities in addition to suppressing oxidative-stress-induced neurodegeneration.
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Affiliation(s)
- Oluwafemi Adeleke Ojo
- Department of Biochemistry, Afe Babalola University, Mail Bag 5454, Ado-Ekiti, Nigeria, Phone: 234-703-782-4647
| | - Adebola Busola Ojo
- Department of Medical Biochemistry, Afe Babalola University, Ado-Ekiti, Nigeria
| | | | | | | | | | - Aline Augusti Boligon
- Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria, Santa Maria, Brazil
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Nwanna EE, Adebayo AA, Oboh G, Ogunsuyi OB, Ademosun AO. Modulatory Effects of Alkaloid Extract from Gongronema latifolium (Utazi) and Lasianthera africana (Editan) on Activities of Enzymes Relevant to Neurodegeneration. J Diet Suppl 2018; 16:27-39. [PMID: 29451813 DOI: 10.1080/19390211.2018.1426075] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Most alkaloids are produced by plants as a defense mechanism against herbivores. Since alkaloids are known to possess pharmacological effects, this study sought to investigate the in vitro modulatory effect of alkaloid obtained from two commonly consumed vegetables in southern Nigeria, Lasianthera africana (editan) and Gongronema latifolium (utazi), on some enzyme activities relevant to neurodegeneration. Effects of the alkaloids on cholinesterases (acetylcholinesterase [AChE] and butyrylcholinesterase [BChE]) and monoamine oxidase (MAO) activities were determined in vitro. In addition, Fe2+ chelating ability as well as radical-scavenging abilities were determined. Alkaloid profile was also determined using gas chromatography coupled with flame ionization detector (GC-FID). The results revealed that the alkaloids inhibited AChE, BChE, and MAO activities in a concentration-dependent manner, such that the alkaloid from G. latifolium showed higher enzyme inhibition (AChE [IC50 = 87.39 µg/ml], BChE [IC50 = 118.65 µg/ml], and MAO [IC50 = 61.37 µg/ml]) than L. africana (AChE = 115.60 µg/ml; BChE = 169.48 µg/ml; MAO = 73.72 µg/ml). In addition, GC-FID analysis revealed abundance of choline in both extracts. Gongronema latifolium and Lasianthera africana alkaloid extracts inhibit enzymes (acetylcholinesterase, butyrylcholinesterase, and monoamine oxidase) implicated in neurodegenerative diseases. Hence, these vegetables could offer dietary supplement in the management of neurodegenerative diseases.
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Affiliation(s)
- Esther E Nwanna
- a Functional Foods and Nutraceutical Unit, Department of Biochemistry , Federal University of Technology , Akure , Akure , Nigeria
| | - Adeniyi A Adebayo
- a Functional Foods and Nutraceutical Unit, Department of Biochemistry , Federal University of Technology , Akure , Akure , Nigeria
| | - Ganiyu Oboh
- a Functional Foods and Nutraceutical Unit, Department of Biochemistry , Federal University of Technology , Akure , Akure , Nigeria
| | - Opeyemi B Ogunsuyi
- a Functional Foods and Nutraceutical Unit, Department of Biochemistry , Federal University of Technology , Akure , Akure , Nigeria
| | - Ayokunle O Ademosun
- a Functional Foods and Nutraceutical Unit, Department of Biochemistry , Federal University of Technology , Akure , Akure , Nigeria
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El-Saied FA, Salem TA, Shakdofa MM, Al-Hakimi AN. Anti-neurotoxic evaluation of synthetic and characterized metal complexes of thiosemicarbazone derivatives. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4215] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Fathy A. El-Saied
- Department of Chemistry, College of Science; Qassim University; KSA
- Department of Chemistry, Faculty of Science; El-Menoufia University; Shebin El-Kom Egypt
| | - Tarek A. Salem
- Department of Biochemistry, College of Medicine; Qassim University; Saudia Arabia
| | - Mohamad M.E. Shakdofa
- Department of Chemistry, Faculty of Sciences and Arts, Khulais; University of Jeddah; Saudi Arabia
- Inorganic Chemistry Department; National Research Centre; P.O. 12622, Elbehothe st., Dokki Cairo Egypt
| | - Ahmed N. Al-Hakimi
- Department of Chemistry, College of Science; Qassim University; KSA
- Department of Chemistry, Faculty of Science; Ibb University; Ibb Yemen
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Sunkaria A, Bhardwaj S, Yadav A, Halder A, Sandhir R. Sulforaphane attenuates postnatal proteasome inhibition and improves spatial learning in adult mice. J Nutr Biochem 2018; 51:69-79. [DOI: 10.1016/j.jnutbio.2017.09.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 06/08/2017] [Accepted: 09/15/2017] [Indexed: 12/31/2022]
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Ahmad W, Ijaz B, Shabbiri K, Ahmed F, Rehman S. Oxidative toxicity in diabetes and Alzheimer's disease: mechanisms behind ROS/ RNS generation. J Biomed Sci 2017; 24:76. [PMID: 28927401 PMCID: PMC5606025 DOI: 10.1186/s12929-017-0379-z] [Citation(s) in RCA: 200] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 09/05/2017] [Indexed: 02/07/2023] Open
Abstract
Reactive oxidative species (ROS) toxicity remains an undisputed cause and link between Alzheimer’s disease (AD) and Type-2 Diabetes Mellitus (T2DM). Patients with both AD and T2DM have damaged, oxidized DNA, RNA, protein and lipid products that can be used as possible disease progression markers. Although the oxidative stress has been anticipated as a main cause in promoting both AD and T2DM, multiple pathways could be involved in ROS production. The focus of this review is to summarize the mechanisms involved in ROS production and their possible association with AD and T2DM pathogenesis and progression. We have also highlighted the role of current treatments that can be linked with reduced oxidative stress and damage in AD and T2DM.
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Affiliation(s)
- Waqar Ahmad
- School of Biological Sciences, University of Queensland, Brisbane, 4072, Australia.
| | - Bushra Ijaz
- Centre of Excellence in Molecular Biology, University of the Punjab, Thokar Niaz Baig, Lahore, 54000, Pakistan
| | - Khadija Shabbiri
- School of Biological Sciences, University of Queensland, Brisbane, 4072, Australia
| | - Fayyaz Ahmed
- Centre of Excellence in Molecular Biology, University of the Punjab, Thokar Niaz Baig, Lahore, 54000, Pakistan
| | - Sidra Rehman
- COMSATS Institute of Information Technology Abbottabad, Abbottabad, 22010, Pakistan
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Oral Administration of Ethanolamine Glycerophospholipid Containing a High Level of Plasmalogen Improves Memory Impairment in Amyloid β-Infused Rats. Lipids 2017; 52:575-585. [DOI: 10.1007/s11745-017-4260-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 04/24/2017] [Indexed: 01/29/2023]
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Di Domenico F, Barone E, Perluigi M, Butterfield DA. The Triangle of Death in Alzheimer's Disease Brain: The Aberrant Cross-Talk Among Energy Metabolism, Mammalian Target of Rapamycin Signaling, and Protein Homeostasis Revealed by Redox Proteomics. Antioxid Redox Signal 2017; 26:364-387. [PMID: 27626216 DOI: 10.1089/ars.2016.6759] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
SIGNIFICANCE Alzheimer's disease (AD) is a multifactorial neurodegenerative disorder and represents one of the most disabling conditions. AD shares many features in common with systemic insulin resistance diseases, suggesting that it can be considered as a metabolic disease, characterized by reduced insulin-stimulated growth and survival signaling, increased oxidative stress (OS), proinflammatory cytokine activation, mitochondrial dysfunction, impaired energy metabolism, and altered protein homeostasis. Recent Advances: Reduced glucose utilization and energy metabolism in AD have been associated with the buildup of amyloid-β peptide and hyperphosphorylated tau, increased OS, and the accumulation of unfolded/misfolded proteins. Mammalian target of rapamycin (mTOR), which is aberrantly activated in AD since early stages, plays a key role during AD neurodegeneration by, on one side, inhibiting insulin signaling as a negative feedback mechanism and, on the other side, regulating protein homeostasis (synthesis/clearance). CRITICAL ISSUES It is likely that the concomitant and mutual alterations of energy metabolism-mTOR signaling-protein homeostasis might represent a self-sustaining triangle of harmful events that trigger the degeneration and death of neurons and the development and progression of AD. Intriguingly, the altered cross-talk between the components of such a triangle of death, beyond altering the redox homeostasis of the neuron, is further exacerbated by increased levels of OS that target and impair key components of the pathways involved. Redox proteomic studies in human samples and animal models of AD-like dementia led to identification of oxidatively modified components of the pathways composing the triangle of death, therefore revealing the crucial role of OS in fueling this aberrant vicious cycle. FUTURE DIRECTIONS The identification of compounds able to restore the function of the pathways targeted by oxidative damage might represent a valuable therapeutic approach to slow or delay AD. Antioxid. Redox Signal. 26, 364-387.
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Affiliation(s)
- Fabio Di Domenico
- 1 Department of Biochemical Sciences, Sapienza University of Rome , Rome, Italy
| | - Eugenio Barone
- 1 Department of Biochemical Sciences, Sapienza University of Rome , Rome, Italy .,2 Facultad de Salud, Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile , Santiago, Chile
| | - Marzia Perluigi
- 1 Department of Biochemical Sciences, Sapienza University of Rome , Rome, Italy
| | - D Allan Butterfield
- 3 Department of Chemistry, Sanders-Brown Center of Aging, University of Kentucky , Lexington, Kentucky
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Xie Q, Ni C, Zhang R, Li L, Rong J, Hu J. Efficient Difluoromethylation of Alcohols Using TMSCF2Br as a Unique and Practical Difluorocarbene Reagent under Mild Conditions. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611823] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Qiqiang Xie
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 China
| | - Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 China
| | - Rongyi Zhang
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 China
- School of Physical Science and Technology; ShanghaiTech University; 100 Haike Road Shanghai 201210 China
| | - Lingchun Li
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 China
| | - Jian Rong
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 China
| | - Jinbo Hu
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 China
- School of Physical Science and Technology; ShanghaiTech University; 100 Haike Road Shanghai 201210 China
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44
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Xie Q, Ni C, Zhang R, Li L, Rong J, Hu J. Efficient Difluoromethylation of Alcohols Using TMSCF2Br as a Unique and Practical Difluorocarbene Reagent under Mild Conditions. Angew Chem Int Ed Engl 2017; 56:3206-3210. [DOI: 10.1002/anie.201611823] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 01/24/2017] [Indexed: 01/26/2023]
Affiliation(s)
- Qiqiang Xie
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 China
| | - Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 China
| | - Rongyi Zhang
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 China
- School of Physical Science and Technology; ShanghaiTech University; 100 Haike Road Shanghai 201210 China
| | - Lingchun Li
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 China
| | - Jian Rong
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 China
| | - Jinbo Hu
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 China
- School of Physical Science and Technology; ShanghaiTech University; 100 Haike Road Shanghai 201210 China
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Shaki F, Shayeste Y, Karami M, Akbari E, Rezaei M, Ataee R. The effect of epicatechin on oxidative stress and mitochondrial damage induced by homocycteine using isolated rat hippocampus mitochondria. Res Pharm Sci 2017; 12:119-127. [PMID: 28515764 PMCID: PMC5385726 DOI: 10.4103/1735-5362.202450] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Oxidative stress and mitochondrial dysfunction are the main suggested mechanisms for neurodegenerative diseases. In this study, we have evaluated the effects of epicatechin (EC) on mitochondrial damage induced by homocycteine (Hcy) using isolated rat hippocampus mitochondria in vivo. EC (50 mg/kg) was gavaged daily for a period of 10 days, starting 5 days prior to Hcy (0.5 μmol/μL) intra hippocampus injection in rats. Mitochondria were isolated from brain by different centrifuge techniques. Mitochondrial function was assayed by MTT test. Also, mitochondrial swelling and oxidative stress markers, such as reactive oxygen species (ROS), lipid peroxidation and glutathione (GSH), were assayed. Hcy induced mitochondrial dysfunction and swelling. Increase in ROS formation, lipid peroxidation, and decreased GSH were observed after Hcy treatment in isolated brain mitochondria. Furthermore, oral administration of EC significantly decreased the lipid peroxidation and ROS levels and also increased GSH levels. Also, EC treatment significantly improved mitochondrial function. As EC indicated protective effects against oxidative stress and mitochondrial damage induced by Hcy, it is suggested for further trials for prevention or treatments of neurodegenerative disorders such as Alzheimer disease.
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Affiliation(s)
- Fatemeh Shaki
- Department of Toxicology and Pharmacology and Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, I.R. Iran
| | - Yaghoub Shayeste
- Department of Toxicology and Pharmacology and Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, I.R. Iran
| | - Mohammad Karami
- Department of Toxicology and Pharmacology and Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, I.R. Iran
| | - Esmaeil Akbari
- Department of Physiology and Pharmacology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, I.R. Iran
| | - Mahdi Rezaei
- Department of Toxicology and Pharmacology and Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, I.R. Iran
| | - Ramin Ataee
- Department of Toxicology and Pharmacology and Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, I.R. Iran.,Thalassemia Research Center, Mazandaran University of Medical Sciences, Sari, I.R. Iran
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Song X, Zhou B, Cui L, Lei D, Zhang P, Yao G, Xia M, Hayashi T, Hattori S, Ushiki-Kaku Y, Tashiro SI, Onodera S, Ikejima T. Silibinin ameliorates Aβ 25-35-induced memory deficits in rats by modulating autophagy and attenuating neuroinflammation as well as oxidative stress. Neurochem Res 2016; 42:1073-1083. [PMID: 28004303 DOI: 10.1007/s11064-016-2141-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 11/05/2016] [Accepted: 12/08/2016] [Indexed: 01/07/2023]
Abstract
Alzheimer's disease (AD) is a progressive, neurodegenerative disease. Accumulating evidence suggests that inflammatory response, oxidative stress and autophagy are involved in amyloid β (Aβ)-induced memory deficits. Silibinin (silybin), a flavonoid derived from the herb milk thistle, is well known for its hepatoprotective activities. In this study, we investigated the neuroprotective effect of silibinin on Aβ25-35-injected rats. Results demonstrated that silibinin significantly attenuated Aβ25-35-induced memory deficits in Morris water maze and novel object-recognition tests. Silibinin exerted anxiolytic effect in Aβ25-35-injected rats as determined in elevated plus maze test. Silibinin attenuated the inflammatory responses, increased glutathione (GSH) levels and decreased malondialdehyde (MDA) levels, and upregulated autophagy levels in the Aβ25-35-injected rats. In conclusion, silibinin is a potential candidate for AD treatment because of its anti-inflammatory, antioxidant and autophagy regulating activities.
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Affiliation(s)
- Xiaoyu Song
- China-Japan Research Institute of Medical and Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Biao Zhou
- China-Japan Research Institute of Medical and Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Lingyu Cui
- China-Japan Research Institute of Medical and Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Di Lei
- China-Japan Research Institute of Medical and Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Pingping Zhang
- China-Japan Research Institute of Medical and Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Guodong Yao
- China-Japan Research Institute of Medical and Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Mingyu Xia
- China-Japan Research Institute of Medical and Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Toshihiko Hayashi
- China-Japan Research Institute of Medical and Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Shunji Hattori
- Nippi Research Institute of Biomatrix, Toride, Ibaraki, 302-0017, Japan
| | - Yuko Ushiki-Kaku
- Nippi Research Institute of Biomatrix, Toride, Ibaraki, 302-0017, Japan
| | - Shin-Ichi Tashiro
- Department of Medical Education & Primary Care, Kyoto Prefectural University of Medicine, Kajiicho 465, Kamikyo-ku, Kyoto City, Kyoto, 602-8566, Japan
| | - Satoshi Onodera
- Department of Clinical and Biomedical Sciences, Showa Pharmaceutical University, Tokyo, 194-8543, Japan
| | - Takashi Ikejima
- China-Japan Research Institute of Medical and Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang, 110016, China.
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Chand K, Rajeshwari, Hiremathad A, Singh M, Santos MA, Keri RS. A review on antioxidant potential of bioactive heterocycle benzofuran: Natural and synthetic derivatives. Pharmacol Rep 2016; 69:281-295. [PMID: 28171830 DOI: 10.1016/j.pharep.2016.11.007] [Citation(s) in RCA: 113] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 11/10/2016] [Indexed: 12/19/2022]
Abstract
The majority of heterocycle compounds and typically common heterocycle fragments present in most pharmaceuticals currently marketed, alongside with their intrinsic versatility and unique physicochemical properties, have poised them as true cornerstones of medicinal chemistry. In this context, oxygen heterocycles exhibit diverse biological and pharmacological activities due in part to the similarities with many natural and synthetic molecules with known biological activity. Among oxygen containing heterocycles, benzofuran (synthetic and natural isolated) and its derivatives have attracted medicinal chemists and pharmacologists due to their pronounced biological activities and their potential applications as pharmacological agents such as antioxidant, antitumor, antiplatelet, antimalarial, antiinflammatory, antidepressant and anticonvulsant properties. There are also an amazing number of approved benzofuran-containing drugs in the market as well as compounds currently going through different clinical phases or registration statuses. Due to the wide range of biological activities of benzofurans, their structure activity relationships have generated interest among medicinal chemists, and this has culminated in the discovery of several lead molecules in numerous disease conditions. Recently, this scaffold has emerged as a pharmacophore of choice for designing antioxidant drug development as their derivatives have shown excellent results through different mechanism of action. This review focused on the recent development of benzofuran derivatives as antioxidant agents (including natural products) and their antioxidant activities; summarize the structure property, hoping to inspire new and even more creative approaches. Also, this study systematically provides a comprehensive report on current developments in benzofuran-based compounds as antioxidant agents and is also helpful for the researchers working on a substitution pattern around the nucleus, with an aim to help medicinal chemists to develop structure activity relationships (SAR) on these derivatives as antioxidant drugs.
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Affiliation(s)
- Karam Chand
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal.
| | - Rajeshwari
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Asha Hiremathad
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal; Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore, Karnataka, India
| | - Mahak Singh
- Gennova Biopharmaceuticals Limited, Vaccine Formulation and Research Centre, Hinjwadi, Pune, India
| | - M Amelia Santos
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Rangappa S Keri
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal; Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore, Karnataka, India.
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Barykin EP, Petrushanko IY, Burnysheva KM, Makarov AA, Mitkevich VA. Isomerization of Asp7 increases the toxic effects of amyloid β and its phosphorylated form in SH-SY5Y neuroblastoma cells. Mol Biol 2016. [DOI: 10.1134/s0026893316050034] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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49
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Yadav NV, Sadashivaiah, Ramaiyan B, Acharya P, Belur L, Talahalli RR. Sesame Oil and Rice Bran Oil Ameliorates Adjuvant-Induced Arthritis in Rats: Distinguishing the Role of Minor Components and Fatty Acids. Lipids 2016; 51:1385-1395. [DOI: 10.1007/s11745-016-4203-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 10/03/2016] [Indexed: 01/17/2023]
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50
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Multi-target screening mines hesperidin as a multi-potent inhibitor: Implication in Alzheimer's disease therapeutics. Eur J Med Chem 2016; 121:810-822. [DOI: 10.1016/j.ejmech.2016.03.057] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 03/09/2016] [Accepted: 03/20/2016] [Indexed: 01/09/2023]
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