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Rodrigues JF, Dacampo LDL, Bicca DF, Lüdtke DS, Brum DDS, Cibin FWS. Effects of organic and inorganic selenium supplementation on frozen-thawed ram semen at two cooling periods. Vet Res Commun 2024; 48:1367-1377. [PMID: 38243140 DOI: 10.1007/s11259-024-10302-6] [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: 04/15/2023] [Accepted: 01/09/2024] [Indexed: 01/21/2024]
Abstract
The aim of this study was to evaluate the effects of different selenium compounds on the sperm quality of cryopreserved ram semen. Ejaculates from four rams, collected using an artificial vagina heated to 38 °C, were individually evaluated. The approved ejaculates were pooled and diluted (1:1 v:v) in Tris-egg yolk extender (20%, v/v) and separated into two control groups, one cooled for 2 h and the other for 4 h. The pooled ejaculates at the two cooling periods were supplemented with two doses (0.5 and 1 μg/mL) of organic selenium (ORG), and inorganic selenium (SeNa), each. The samples were packed in 0.25 ml straws, at a concentration of 400 × 106 sperms/mL and stored in liquid nitrogen. The straws were thawed in a water bath at 37 °C for 20 s, and the samples were subjected to sperm kinetics evaluation by Computer Assisted Semen Analysis software. Sperm membrane integrity, acrosome morphology, and mitochondrial potential were assessed. In addition, oxidative stress markers reactive oxygen species (ROS), ferric reducing antioxidant power (FRAP), thiobarbituric acid reactive species (TBARS), and glutathione peroxidase (GPx) enzyme activity) were also evaluated. No significant improvement was observed in the ram semen quality at the two cooling times. Supplementation of the freezing extender with 0.5 μg/mL ORG, subjected to 4 h cooling period, increased the sperm motility when compared with the control group at the same cooling time. In addition, the 0.5 μg/mL SeNa group, under the 2 h cooling period, showed an increase in sperm motility when compared to the control group at the same cooling period. Considering the importance of sperm motility as a fertility parameter, our study indicates that supplementation with ORG and SeNa can help improve the total motility of the cryopreserved ram semen.
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Affiliation(s)
- Jéssica Ferreira Rodrigues
- Laboratório de Biotecnologia da Reprodução (Biotech), Universidade Federal do Pampa, Campus Uruguaiana, Uruguaiana, CEP 97500-970, RS, Brazil
- Laboratório de Estresse Oxidativo, Universidade Federal do Pampa (UNIPAMPA), Campus Uruguaiana, Uruguaiana, 97500-970, RS, Brazil
| | - Lucas Dalle Laste Dacampo
- Laboratório de Biotecnologia da Reprodução (Biotech), Universidade Federal do Pampa, Campus Uruguaiana, Uruguaiana, CEP 97500-970, RS, Brazil
| | - Diogo Ferreira Bicca
- Laboratório de Biotecnologia da Reprodução (Biotech), Universidade Federal do Pampa, Campus Uruguaiana, Uruguaiana, CEP 97500-970, RS, Brazil
- Laboratório de Estresse Oxidativo, Universidade Federal do Pampa (UNIPAMPA), Campus Uruguaiana, Uruguaiana, 97500-970, RS, Brazil
| | - Diogo Seibert Lüdtke
- Instituto de Química, Universidade Federal do Rio Grande do Sul (UFRGS), Avenida Bento Gonçalves 9500, Porto Alegre, 91501-970, RS, Brazil
| | - Daniela Dos Santos Brum
- Laboratório de Biotecnologia da Reprodução (Biotech), Universidade Federal do Pampa, Campus Uruguaiana, Uruguaiana, CEP 97500-970, RS, Brazil
| | - Francielli Weber Santos Cibin
- Laboratório de Biotecnologia da Reprodução (Biotech), Universidade Federal do Pampa, Campus Uruguaiana, Uruguaiana, CEP 97500-970, RS, Brazil.
- Laboratório de Estresse Oxidativo, Universidade Federal do Pampa (UNIPAMPA), Campus Uruguaiana, Uruguaiana, 97500-970, RS, Brazil.
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Liang Y, Kang X, Zhang H, Xu H, Wu X. Knockdown and inhibition of hippocampal GPR17 attenuates lipopolysaccharide-induced cognitive impairment in mice. J Neuroinflammation 2023; 20:271. [PMID: 37990234 PMCID: PMC10662506 DOI: 10.1186/s12974-023-02958-9] [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: 08/11/2023] [Accepted: 11/13/2023] [Indexed: 11/23/2023] Open
Abstract
BACKGROUND Previously we reported that inhibition of GPR17 prevents amyloid β 1-42 (Aβ1-42)-induced cognitive impairment in mice. However, the role of GPR17 on cognition is still largely unknown. METHODS Herein, we used a mouse model of cognitive impairment induced by lipopolysaccharide (LPS) to further investigate the role of GPR17 in cognition and its potential mechanism. The mice were pretreated with GPR17 shRNA lentivirus and cangrelor by microinjection into the dentate gyrus (DG) region of the hippocampus. After 21 days, LPS (0.25 mg/kg, i.p.) was administered for 7 days. Animal behavioral tests as well as pathological and biochemical assays were performed to evaluate the cognitive function in mice. RESULTS LPS exposure resulted in a significant increase in GPR17 expression at both protein and mRNA levels in the hippocampus. Gene reduction and pharmacological blockade of GPR17 improved cognitive impairment in both the Morris water maze and novel object recognition tests. Knockdown and inhibition of GPR17 inhibited Aβ production, decreased the expression of NF-κB p65, increased CREB phosphorylation and elevated BDNF expression, suppressed the accumulation of pro-inflammatory cytokines, inhibited Glial cells (microglia and astrocytes) activation, and increased Bcl-2, PSD-95, and SYN expression, reduced Bax expression as well as decreased caspase-3 activity and TUNEL-positive cells in the hippocampus of LPS-treated mice. Notably, knockdown and inhibition of GPR17 not only provided protective effects against cholinergic dysfunction but also facilitated the regulation of oxidative stress. In addition, cangrelor pretreatment can effectively inhibit the expression of inflammatory cytokines by suppressing NF-κB/CREB/BDNF signaling in BV-2 cells stimulated by LPS. However, activation of hippocampal GPR17 with MDL-29951 induced cognitive impairment in normal mice. CONCLUSIONS These observations indicate that GPR17 may possess a neuroprotective effect against LPS-induced cognition deficits, and neuroinflammation by modulation of NF-κB/CREB/BDNF signaling in mice, indicating that GPR17 may be a promising new target for the prevention and treatment of AD.
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Affiliation(s)
- Yusheng Liang
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, 230032, China
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, 230032, China
| | - Xu Kang
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, 230032, China
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, 230032, China
| | - Haiwang Zhang
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, 230032, China
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, 230032, China
| | - Heng Xu
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, 230032, China
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, 230032, China
| | - Xian Wu
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, 230032, China.
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, 230032, China.
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A Purine Derivative Containing an Organoselenium Group Protects Against Memory Impairment, Sensitivity to Nociception, Oxidative Damage, and Neuroinflammation in a Mouse Model of Alzheimer's Disease. Mol Neurobiol 2023; 60:1214-1231. [PMID: 36427137 DOI: 10.1007/s12035-022-03110-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 10/20/2022] [Indexed: 11/27/2022]
Abstract
In the present study, the effect of 6-((4-fluorophenyl) selanyl)-9H-purine (FSP) was tested against memory impairment and sensitivity to nociception induced by intracerebroventricular injection of amyloid-beta peptide (Aβ) (25-35 fragment), 3 nmol/3 μl/per site in mice. Memory impairment was determined by the object recognition task (ORT) and nociception by the Von-Frey test (VFT). Aβ caused neuroinflammation with upregulation of glial fibrillary acidic protein (GFAP) (in hippocampus), nuclear factor-κB (NF-κB), and the proinflammatory cytokines interferon-γ (IFN-γ) and tumor necrosis factor-α (TNF-α) in cerebral cortex and hippocampus. Additionally, Aβ increased oxidant levels and lipid peroxidation in cerebral cortex and hippocampus, but decreased heme oxygenase-1 (HO-1) and peroxiredoxin-1 (Prdx1) expression in the hippocampus. Anti-neuroinflammatory effects of FSP were demonstrated by a decrease in the expression of GFAP and NF-κB in the hippocampus, as well as a decrease in proinflammatory cytokines in both the hippocampus and cerebral cortex FSP protected against oxidative stress by decreasing oxidant levels and lipid peroxidation and by increasing HO-1 and Prdx1 expressions in the hippocampus of mice. Moreover, FSP prevented the activation of nuclear factor erythroid 2-related factor 2 (Nrf-2) in the hippocampus of mice induced by Aβ. In conclusion, treatment with FSP attenuated memory impairment, nociception sensitivity by decreasing oxidative stress, and neuroinflammation in a mouse model of Alzheimer's disease.
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Canet G, Zussy C, Hernandez C, Maurice T, Desrumaux C, Givalois L. The pathomimetic oAβ25–35 model of Alzheimer's disease: Potential for screening of new therapeutic agents. Pharmacol Ther 2023; 245:108398. [PMID: 37001735 DOI: 10.1016/j.pharmthera.2023.108398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 03/27/2023] [Indexed: 03/31/2023]
Abstract
Alzheimer's disease (AD) is the most common form of dementia in the elderly, currently affecting more than 40 million people worldwide. The two main histopathological hallmarks of AD were identified in the 1980s: senile plaques (composed of aggregated amyloid-β (Aβ) peptides) and neurofibrillary tangles (composed of hyperphosphorylated tau protein). In the human brain, both Aβ and tau show aggregation into soluble and insoluble oligomers. Soluble oligomers of Aβ include their most predominant forms - Aβ1-40 and Aβ1-42 - as well as shorter peptides such as Aβ25-35 or Aβ25-35/40. Most animal models of AD have been developed using transgenesis, based on identified human mutations. However, these familial forms of AD represent less than 1% of AD cases. In this context, the idea emerged in the 1990s to directly inject the Aβ25-35 fragment into the rodent brain to develop an acute model of AD that could mimic the disease's sporadic forms (99% of all cases). This review aims to: (1) summarize the biological activity of Aβ25-35, focusing on its impact on the main structural and functional alterations observed in AD (cognitive deficits, APP misprocessing, tau system dysfunction, neuroinflammation, oxidative stress, cholinergic and glutamatergic alterations, HPA axis dysregulation, synaptic deficits and cell death); and (2) confirm the interest of this pathomimetic model in AD research, as it has helped identify and characterize many molecules (marketed, in clinical development, and in preclinical testing), and to the development of alternative approaches for AD prevention and therapy. Today, the Aβ25-35 model appears as a first-intent choice model to rapidly screen the symptomatic or neuroprotective potencies of new compounds, chemical series, or innovative therapeutic strategies.
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Barbosa FAR, Canto RFS, Teixeira KF, de Souza AS, de Oliveira AS, Braga AL. Selenium-Derivative Compounds: A Review of New Perspectives in the Treatment of Alzheimer's Disease. Curr Med Chem 2023; 30:689-700. [PMID: 35209817 DOI: 10.2174/0929867329666220224161454] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/16/2021] [Accepted: 12/19/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND Alzheimer's disease (AD) is one of the most prevalent types of dementia, affecting millions of older people worldwide. AD is stimulating efforts to develop novel molecules targeting its main features associated with a decrease in acetylcholine levels, an increase in oxidative stress and depositions of amyloid-β (Aβ) and tau protein. In this regard, selenium-containing compounds have been demonstrated as potential multi-targeted compounds in the treatment of AD. These compounds are known for their antioxidant and anticholinesterase properties, causing a decrease in Aβ aggregation. OBJECTIVE In this review, we approach structure-activity relationships of each compound, associating the decrease of ROS activity, an increase of tau-like activity and inhibition of AChE with a decrease in the self-aggregation of Aβ. METHODS We also verify that the molecular descriptors apol, nHBAcc and MlogP may be related to optimized pharmacokinetic properties for anti-AD drugs. RESULTS In our analysis, few selenium-derived compounds presented similar molecular features to FDA-approved drugs. CONCLUSION We suggest that unknown selenium-derived molecules with apol, nHBAcc and MlogP like FDA-approved drugs may be better successes with optimized pharmacokinetic properties in future studies in AD.
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Affiliation(s)
- Flavio A R Barbosa
- Department of Chemistry, Center for Physical and Mathematical Sciences, Federal University of Santa Catarina, Florianópolis-SC, Brazil
| | - Rômulo F S Canto
- Department of Pharmacosciences, Foundation Federal University of Health Sciences of Porto Alegre, Porto Alegre-RS, Brazil
| | - Kerolain F Teixeira
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau-SC, Brazil
| | - Anacleto S de Souza
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo-SP, Brazil
| | - Aldo S de Oliveira
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau-SC, Brazil
| | - Antonio L Braga
- Department of Chemistry, Center for Physical and Mathematical Sciences, Federal University of Santa Catarina, Florianópolis-SC, Brazil.,Department of Chemical Sciences, Faculty of Science, University of Johannesburg, Doornfontein, South Africa
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Lopes JPB, Silva L, Lüdtke DS. An overview on the synthesis of carbohydrate-based molecules with biological activity related to neurodegenerative diseases. RSC Med Chem 2021; 12:2001-2015. [PMID: 35028560 PMCID: PMC8672812 DOI: 10.1039/d1md00217a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 09/07/2021] [Indexed: 01/18/2023] Open
Abstract
In the context of the search for multitarget drugs with improved efficacy against neurodegenerative disorders, carbohydrate derivatives have emerged as promising candidates for Alzheimer's therapy. Herein we describe the synthesis and biological evaluation of several classes of sugar-based compounds, where most of them contain heterocyclic aromatic moieties that bear known biological properties and high affinity for the cholinesterase active site. This general idea led to the synthesis of compounds with high inhibitory potency against acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE), enzymatic selectivity and combined properties such as antioxidant and neuroprotection, in addition to the absence of toxicity.
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Affiliation(s)
- João Paulo B Lopes
- Instituto de Química, Universidade Federal do Rio Grande do Sul Av. Bento, Gonçalves 9500, Campus do Vale 91501-970 Porto Alegre RS Brazil
| | - Luana Silva
- Instituto de Química, Universidade Federal do Rio Grande do Sul Av. Bento, Gonçalves 9500, Campus do Vale 91501-970 Porto Alegre RS Brazil
| | - Diogo S Lüdtke
- Instituto de Química, Universidade Federal do Rio Grande do Sul Av. Bento, Gonçalves 9500, Campus do Vale 91501-970 Porto Alegre RS Brazil
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Assessment of lipophilic fluorescence products in β-amyloid-induced cognitive decline: A parallel track in hippocampus, CSF, plasma and erythrocytes. Exp Gerontol 2021; 157:111645. [PMID: 34843902 DOI: 10.1016/j.exger.2021.111645] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 11/17/2021] [Accepted: 11/23/2021] [Indexed: 12/23/2022]
Abstract
BACKGROUND Oxidative stress implicates in Alzheimer's disease (AD) pathophysiology, and associates with the creation of end products of free radical reactions, are known as lipophilic fluorescent products (LFPs). This study aimed to evaluate the probable parallel alterations in the spectral properties of the LFPs in the hippocampus tissues, cerebrospinal fluid (CSF), plasma, and erythrocytes during AD model induction by intra-cerebroventricular (ICV) amyloid β-protein fragment 25-35 (Aβ) injection. METHODS Male rats received an intra-ICV injection of Aβ. Hippocampus, CSF, plasma, and erythrocytes were harvested at 5, 14, and 21 days after Aβ injection. The fluorescent intensity of LFPs was assessed by spectrofluorimetry using synchronous fluorescence spectra 25 (SYN 25) and 50 (SYN 50) in the range of 250-500 nm. Hippocampal tissue malondialdehyde (MDA) and superoxide dismutase (SOD) were also measured. Cognitive alterations were evaluated using Morris water maze (MWM) test. RESULTS The parallel significant rise in the fluorescence intensity of LFPs was detected in the hippocampus, CSF, plasma, and erythrocytes, 14, and 21 days after ICV-Aβ injection. These alterations were found in both types of synchronous spectra 25, and 50, and were coincided with hippocampal cognitive decline, the MDA rise, and decrease of SOD activity. There was a positive correlation between hippocampus homogenate, and plasma or CSF rise in fluorescence intensity. CONCLUSION Data showed that the Aβ increased hippocampal MDA, and decreased SOD activity, led to a higher rate of oxidative products and subsequently resulted in an increase in LFPs fluorescence intensity during the development of cognitive decline. LFPs' alterations reflect a comprehensive view of tissue redox status. The fluorescence properties of LFPs indicate their composition, which may pave the way to trace the different pathological states.
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Sharma S, Saini A, Nehru B. Neuroprotective effects of carbenoxolone against amyloid-beta 1-42 oligomer-induced neuroinflammation and cognitive decline in rats. Neurotoxicology 2021; 83:89-105. [PMID: 33412218 DOI: 10.1016/j.neuro.2020.12.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 12/01/2020] [Accepted: 12/28/2020] [Indexed: 01/01/2023]
Abstract
The aggregation of Aβ plays a major role in the progression of Alzheimer's disease (AD) and induces neuroinflammation, neurodegeneration and cognitive decline. Recent studies have shown that the soluble aggregates of Aβ are the major culprits in the development of these aberrations inside the brain. In this study, we investigated the neuroprotective potential of carbenoxolone (Cbx), which has been found to possess anti-inflammatory and nootropic properties. Male SD rats (250-300 g) were divided into the four groups (n = 8 per group): (1) sham control rats injected with vehicles, (2) Aβ 1-42 group rats injected i.c.v. with Aβ 42 oligomers (10 μl/rat), (3) Aβ 1-42+Cbx group rats injected i.c.v. with Aβ 42 oligomers (10 μl/rat) and i.p. with carbenoxolone disodium (20 mg/kg body weight) for six-weeks and (4) Cbx group rats injected i.p. with carbenoxolone disodium (20 mg/kg body weight) for six-weeks. Progressive learning and memory deficits were seen through a battery of behavioral tests and a significant increase in the expressions of GFAP and Iba-1 was observed which resulted in the release of pro-inflammatory cytokines post Aβ oligomer injection. The levels of BDNF, Bcl-2 and pCREB were decreased while Bax, caspase-3, caspase-9 and cytochrome c levels were induced. Also, neurotransmitter levels were altered and neuronal damage was observed through histopathological studies. After Cbx supplementation, the expressions of GFAP, IBA-1, pro-inflammatory cytokines, iNOS, nNOS and nitric oxide levels were normalized. The expression levels of pro-apoptotic markers were decreased and neurotrophin levels were restored. Also, neurotransmitter levels and neuronal profile were improved and progressive improvements in behavioural performance were observed. Our results demonstrated that Cbx might have prevented the Aβ induced neurodegeneration and cognitive decline by inhibiting the neuroinflammation and inducing BDNF/CREB signalling. These findings suggest that Cbx can be explored as a potential therapeutic agent against the progression of AD.
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Affiliation(s)
- Sheetal Sharma
- Department of Biophysics, Basic Medical Sciences Block II, Panjab University, Chandigarh 160014, India.
| | - Avneet Saini
- Department of Biophysics, Basic Medical Sciences Block II, Panjab University, Chandigarh 160014, India.
| | - Bimla Nehru
- Department of Biophysics, Basic Medical Sciences Block II, Panjab University, Chandigarh 160014, India.
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Talebi M, Majdi A, Nasiri E, Naseri A, Sadigh-Eteghad S. The correlation between circulating inflammatory, oxidative stress, and neurotrophic factors level with the cognitive outcomes in multiple sclerosis patients. Neurol Sci 2020; 42:2291-2300. [DOI: 10.1007/s10072-020-04807-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 10/06/2020] [Indexed: 10/23/2022]
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Lopes JPB, Silva L, Ceschi MA, Lüdtke DS, Zimmer AR, Ruaro TC, Dantas RF, de Salles CMC, Silva-Jr FP, Senger MR, Barbosa G, Lima LM, Guedes IA, Dardenne LE. Synthesis of new lophine-carbohydrate hybrids as cholinesterase inhibitors: cytotoxicity evaluation and molecular modeling. MEDCHEMCOMM 2019; 10:2089-2101. [PMID: 32904099 PMCID: PMC7451069 DOI: 10.1039/c9md00358d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 10/03/2019] [Indexed: 11/21/2022]
Abstract
In this study, we synthesized nine novel hybrids derived from d-xylose, d-ribose, and d-galactose sugars connected by a methylene chain with lophine. The compounds were synthesized by a four-component reaction to afford the substituted imidazole moiety, followed by the displacement reaction between sugar derivatives with an appropriate N-alkylamino-lophine. All the compounds were found to be the potent and selective inhibitors of BuChE activity in mouse serum, with compound 9a (a d-galactose derivative) being the most potent inhibitor (IC50 = 0.17 μM). According to the molecular modeling results, all the compounds indicated that the lophine moiety existed at the bottom of the BuChE cavity and formed a T-stacking interaction with Trp231, a residue accessible exclusively in the BuChE cavity. Noteworthily, only one compound exhibited activity against AChE (8b; IC50 = 2.75 μM). Moreover, the in silico ADME predictions indicated that all the hybrids formulated in this study were drug-likely, orally available, and able to reach the CNS. Further, in vitro studies demonstrated that the two most potent compounds against BuChE (8b and 9a) had no cytotoxic effects in the Vero (kidney), HepG2 (hepatic), and C6 (astroglial) cell lines.
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Affiliation(s)
- João Paulo Bizarro Lopes
- Instituto de Química , Universidade Federal do Rio Grande do Sul , Av. Bento Gonçalves 9500, Campus do Vale , 91501-970 , Porto Alegre , RS , Brazil .
| | - Luana Silva
- Instituto de Química , Universidade Federal do Rio Grande do Sul , Av. Bento Gonçalves 9500, Campus do Vale , 91501-970 , Porto Alegre , RS , Brazil .
| | - Marco Antonio Ceschi
- Instituto de Química , Universidade Federal do Rio Grande do Sul , Av. Bento Gonçalves 9500, Campus do Vale , 91501-970 , Porto Alegre , RS , Brazil .
| | - Diogo Seibert Lüdtke
- Instituto de Química , Universidade Federal do Rio Grande do Sul , Av. Bento Gonçalves 9500, Campus do Vale , 91501-970 , Porto Alegre , RS , Brazil .
| | - Aline Rigon Zimmer
- Faculdade de Farmácia, Programa de Pós-Graduação em Ciências Farmacêuticas , Universidade Federal do Rio Grande do Sul , Av. Ipiranga 2752, Bairro Petrópolis , 90610-000 , Porto Alegre , RS , Brazil
| | - Thais Carine Ruaro
- Faculdade de Farmácia, Programa de Pós-Graduação em Ciências Farmacêuticas , Universidade Federal do Rio Grande do Sul , Av. Ipiranga 2752, Bairro Petrópolis , 90610-000 , Porto Alegre , RS , Brazil
| | - Rafael Ferreira Dantas
- Laboratório de Bioquímica Experimental e Computacional de Fármacos , Instituto Oswaldo Cruz , Fundação Oswaldo Cruz , Av. Brasil, 4365 , 21040-360 , Rio de Janeiro , RJ , Brazil
| | - Cristiane Martins Cardoso de Salles
- Instituto de Ciências Exatas , Universidade Federal Rural do Rio de Janeiro , BR 465, Km 7, Campus Universitário , 23890-000 , Seropédica , RJ , Brazil
| | - Floriano Paes Silva-Jr
- Laboratório de Bioquímica Experimental e Computacional de Fármacos , Instituto Oswaldo Cruz , Fundação Oswaldo Cruz , Av. Brasil, 4365 , 21040-360 , Rio de Janeiro , RJ , Brazil
| | - Mario Roberto Senger
- Laboratório de Bioquímica Experimental e Computacional de Fármacos , Instituto Oswaldo Cruz , Fundação Oswaldo Cruz , Av. Brasil, 4365 , 21040-360 , Rio de Janeiro , RJ , Brazil
| | - Gisele Barbosa
- Laboratório de Avaliação e Síntese de Substâncias Bioativas , Centro de Ciências da Saúde , Universidade Federal do Rio de Janeiro , Cidade Universitária , 21941-902 , Rio de Janeiro , RJ , Brazil
| | - Lídia Moreira Lima
- Laboratório de Avaliação e Síntese de Substâncias Bioativas , Centro de Ciências da Saúde , Universidade Federal do Rio de Janeiro , Cidade Universitária , 21941-902 , Rio de Janeiro , RJ , Brazil
| | - Isabella Alvim Guedes
- Laboratório Nacional De Computação Científica-LNCC , Av. Getúlio Vargas, 333 , Petrópolis , 25651-075 , RJ , Brazil
| | - Laurent Emmanuel Dardenne
- Laboratório Nacional De Computação Científica-LNCC , Av. Getúlio Vargas, 333 , Petrópolis , 25651-075 , RJ , Brazil
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Design, synthesis, cholinesterase inhibition and molecular modelling study of novel tacrine hybrids with carbohydrate derivatives. Bioorg Med Chem 2018; 26:5566-5577. [DOI: 10.1016/j.bmc.2018.10.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 10/05/2018] [Accepted: 10/07/2018] [Indexed: 02/03/2023]
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Jin Y, Peng J, Wang X, Zhang D, Wang T. Ameliorative Effect of Ginsenoside Rg1 on Lipopolysaccharide-Induced Cognitive Impairment: Role of Cholinergic System. Neurochem Res 2017; 42:1299-1307. [DOI: 10.1007/s11064-016-2171-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Revised: 12/23/2016] [Accepted: 12/28/2016] [Indexed: 12/16/2022]
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Wu J, Hu Y, Xiang L, Li S, Yuan Y, Chen X, Zhang Y, Huang W, Meng X, Wang P. San-Huang-Xie-Xin-Tang Constituents Exert Drug-Drug Interaction of Mutual Reinforcement at Both Pharmacodynamics and Pharmacokinetic Level: A Review. Front Pharmacol 2016; 7:448. [PMID: 27965575 PMCID: PMC5124576 DOI: 10.3389/fphar.2016.00448] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 11/09/2016] [Indexed: 12/29/2022] Open
Abstract
Inflammatory disorders underlie varieties of human diseases. San-Huang-Xie-xin-Tang (SHXXT), composed with Rhizoma Rhei (Rheum palmatum L.), Rhizoma Coptidis (Coptis chinensis Franch), and Radix Scutellaria (Scutellaria baicalensis Georgi), is a famous formula which has been widely used in the fight against inflammatory abnormalities. Mutual reinforcement is one of the basic theories of traditional Chinese medicine. Here this article reviewed and analyzed the recent research on (1) How the main constituents of SHXXT impact on inflammation-associated signaling pathway molecules. (2) The interaction between the main constituents and efflux pumps or intestinal transporters. The goal of this work was to, (1) Provide evidence to support the theory of mutual reinforcement. (2) Clarify the key targets of SHXXT and suggest which targets need further investigation. (3) Give advice for the clinical use of SHXXT to elevated the absorption of main constituents and eventually promote oral bioavailability. We search literatures in scientific databases with key words of “each main SHXXT constituent,” in combination with “each main inflammatory pathway target molecule” or each main intestinal transporter, respectively. We report the effect of five main constituents on target molecules which lies in three main inflammatory signaling pathways, we as well investigate the interaction between constituents and intestinal transporter. We conclude, (1) The synergistic effect of constituents at both levels confirm the mutual reinforcement theory of TCM as it is proven in this work. (2) The effect of main constituents on downstream targets in nuclear need more further investigation. (3) Drug elevating the absorption of rhein, berberine and baicalein can be employed to promote oral bioavailability of SHXXT.
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Affiliation(s)
- Jiasi Wu
- Chengdu University of Traditional Chinese Medicine Chengdu, China
| | - Yingfan Hu
- Chengdu University of Traditional Chinese Medicine Chengdu, China
| | - Li Xiang
- Chengdu University of Traditional Chinese Medicine Chengdu, China
| | - Sheng Li
- Chengdu Institute of Biology, Chinese Academy of Sciences Chengdu, China
| | - Yi Yuan
- Chengdu University of Traditional Chinese MedicineChengdu, China; Chengdu Institute of Biology, Chinese Academy of SciencesChengdu, China
| | | | - Yan Zhang
- Chengdu University of Traditional Chinese Medicine Chengdu, China
| | - Wenge Huang
- Chengdu University of Traditional Chinese Medicine Chengdu, China
| | - Xianli Meng
- Chengdu University of Traditional Chinese Medicine Chengdu, China
| | - Ping Wang
- Chengdu University of Traditional Chinese Medicine Chengdu, China
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SOD3 Ameliorates Aβ 25-35-Induced Oxidative Damage in SH-SY5Y Cells by Inhibiting the Mitochondrial Pathway. Cell Mol Neurobiol 2016; 37:513-525. [PMID: 27272114 DOI: 10.1007/s10571-016-0390-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 05/30/2016] [Indexed: 02/06/2023]
Abstract
This study was designed to investigate the protective effects of extracellular superoxide dismutase (SOD3) against amyloid beta (Aβ25-35)-induced damage in human neuroblastoma SH-SY5Y cells and to elucidate the mechanisms responsible for this beneficial effect. SH-SY5Y cells overexpressing SOD3 were generated by adenoviral vector-mediated infection and Aβ25-35 was then added to the cell culture system to establish an in vitro model of oxidative stress. Cell viability, the generation of intracellular reactive oxygen species (ROS), the expression and activity of antioxidant enzymes, the levels of lipid peroxidation malondialdehyde (MDA), the expression of mitochondrial apoptosis-related genes and calcium images were examined. Following Aβ25-35 exposure, SOD3 overexpression promoted the survival of SH-SY5Y cells, decreased the production of ROS, decreased MDA and calcium levels, and decreased cytochrome c, caspase-3, caspase-9 and Bax gene expression. Furthermore, SOD3 overexpression increased the expression and activity of antioxidant enzyme genes and Bcl-2 expression. Together, our data demonstrate that SOD3 ameliorates Aβ25-35-induced oxidative damage in neuroblastoma SH-SY5Y cells by inhibiting the mitochondrial pathway. These data provide new insights into the functional actions of SOD3 on oxidative stress-induced cell damage.
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Ivachtchenko AV, Lavrovsky Y, Ivanenkov YA. AVN-211, Novel and Highly Selective 5-HT6 Receptor Small Molecule Antagonist, for the Treatment of Alzheimer's Disease. Mol Pharm 2016; 13:945-63. [PMID: 26886442 DOI: 10.1021/acs.molpharmaceut.5b00830] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Within the past decade several novel targets have been indicated as key players in Alzheimer-type dementia and associated conditions, including a "frightening" memory loss as well as severe cognitive impairments. These proteins are deeply implicated in crucial cell processes, e.g., autophagy, growth and progression, apoptosis, and metabolic equilibrium. Since recently, 5-HT6R has been considered as one of the most prominent biological targets in AD drug therapy. Therefore, we investigated the potential procognitive and neuroprotective effects of our novel selective 5-HT6R antagonist, AVN-211. During an extensive preclinical evaluation the lead compound demonstrated a relatively high therapeutic potential and improved selectivity toward 5-HT6R as compared to reference drug candidates. It was thoroughly examined in different in vivo behavioral models directly related to AD and showed evident improvements in cognition and learning. In many cases, the observed effect was considerably greater than that determined for the reported drugs and drug candidates, including memantine, SB-742457, and Lu AE58054, evaluated under the same conditions. In addition, AVN-211 showed a similar or better anxiolytic efficacy than fenobam, rufinamide, lorazepam, and buspirone in an elevated plus-maze model, elevated platform, and open field tests. The compound demonstrated low toxicity and no side effects in vivo, an appropriate pharmacokinetic profile, and stability. In conclusion, AVN-211 significantly delayed or partially halted the progressive decline in memory function associated with AD, which makes it an interesting drug candidate for the treatment of neurodegenerative and psychiatric disorders. Advanced clinical trials are currently under active discussion and in high priority.
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Affiliation(s)
- Alexandre V Ivachtchenko
- Alla Chem LLC , 1835 East Hallandale Beach Boulevard, #442, Hallandale Beach, Florida 33009, United States.,Avineuro Pharmaceuticals, Inc. , 1835 East Hallandale Beach Boulevard, #442, Hallandale Beach, Florida 33009, United States
| | - Yan Lavrovsky
- R-Pharm Overseas, Inc. , 12526 High Bluff Drive, Suite #300, San Diego, California 92130, United States
| | - Yan A Ivanenkov
- Moscow Institute of Physics and Technology (State University) , 9 Institutskiy Lane, Dolgoprudny City, Moscow Region 141700, Russian Federation.,Chemistry Department, Moscow State University , Leninskie Gory, Building 1/3, GSP-1, 119991, Moscow, Russia
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Antioxidation Effect of Simvastatin in Aorta and Hippocampus: A Rabbit Model Fed High-Cholesterol Diet. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2016:6929306. [PMID: 26798426 PMCID: PMC4699013 DOI: 10.1155/2016/6929306] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 09/16/2015] [Accepted: 09/28/2015] [Indexed: 11/17/2022]
Abstract
We show that hypercholesterolemia contributes to oxidative stress injury progression in brain and simvastatin counteracts the cholesterol-induced peroxidation injury in rabbit hippocampus, and we demonstrate for the first time that the simvastatin is a critical role in brain protection and identify HO-1 and other related antioxidant enzymes as molecular target for active redox compounds. Second, our experiments have pointed out an association between statin treatment and a decrease in the risk of having peroxidation damage of brain. The balance effects of simvastatin to ROS and antioxidants enzymes network are most probably due to improved SOD functional activity, increase in GSH-Px, increase in HO-1 expression, and decrease of MDA generation.
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