1
|
Jibril TI, Alzoubi KH, Mhaidat NM, Khabour OF, Alqudah MA, Rababa’h AM, Alrabadi N, Al-udatt D. Sildenafil prevents chronic psychosocial stress-induced working memory impairment: Role of brain-derived neurotrophic factor. CURRENT RESEARCH IN PHARMACOLOGY AND DRUG DISCOVERY 2024; 6:100182. [PMID: 38706525 PMCID: PMC11067328 DOI: 10.1016/j.crphar.2024.100182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 03/29/2024] [Accepted: 04/12/2024] [Indexed: 05/07/2024] Open
Abstract
Background Psychosocial stress, a common feature in modern societies, impairs cognitive functions. It is suggested that stress hormones and elevated excitatory amino acids during stress are responsible for stress-induced cognitive deficits. Reduced brain-derived neurotrophic factor (BDNF) levels, increased oxidative stress, and alteration of synaptic plasticity biomarkers are also possible contributors to the negative impact of stress on learning and memory. Sildenafil citrate is a selective phosphodiesterase type 5 (PDE5) inhibitor and the first oral therapy for the treatment of erectile dysfunction. It has been shown that sildenafil improves learning and memory and possesses antioxidant properties. We hypothesized that administering sildenafil to stressed rats prevents the cognitive deficit induced by chronic psychosocial stress. Methods Psychosocial stress was generated using the intruder model. Sildenafil 3 mg/kg/day was administered intraperitoneally to animals. Behavioral studies were conducted to test spatial learning and memory using the radial arm water maze. Then, the hippocampal BDNF level and several antioxidant markers were assessed. Results This study revealed that chronic psychosocial stress impaired short-term but not long-term memory. The administration of sildenafil prevented this short-term memory impairment. Chronic psychosocial stress markedly reduced the level of hippocampal BDNF (P˂0.05), and this reduction in BDNF was normalized by sildenafil treatment. In addition, neither chronic psychosocial stress nor sildenafil significantly altered the activity of measured oxidative parameters (P > 0.05). Conclusion Chronic psychosocial stress induces short-term memory impairment. The administration of sildenafil citrate prevented this impairment, possibly by normalizing the level of BDNF.
Collapse
Affiliation(s)
- Tareq I. Jibril
- Department of Clinical Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Karem H. Alzoubi
- Department of Pharmacy Practice and Pharmacotherapeutics, College of Pharmacy, University of Sharjah, Sharjah, United Arab Emirates
- Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Nizar M. Mhaidat
- Department of Clinical Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Omar F. Khabour
- Department of Medical Laboratory Sciences, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Mohammad A.Y. Alqudah
- Department of Pharmacy Practice and Pharmacotherapeutics, College of Pharmacy, University of Sharjah, Sharjah, United Arab Emirates
- Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Abeer M. Rababa’h
- Department of Clinical Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Nasr Alrabadi
- Department of Pharmacology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Doaa Al-udatt
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid, 22110, Jordan
| |
Collapse
|
2
|
Profile of new psychoactive substances (NPS) and other synthetic drugs in seized materials analysed in a Brazilian forensic laboratory. Forensic Toxicol 2018. [DOI: 10.1007/s11419-018-0456-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
3
|
Gharebaghi A, Amiri I, Salehi I, Shahidi S, Komaki A, Mehdizadeh M, Moravej FG, Asl SS. Treadmill exercise attenuates 3,4-methylenedioxymethamphetamine-induced memory impairment through a decrease apoptosis in male rat hippocampus. J Neurosci Res 2017; 95:2448-2455. [DOI: 10.1002/jnr.24078] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 04/12/2017] [Accepted: 04/12/2017] [Indexed: 12/28/2022]
Affiliation(s)
- Alireza Gharebaghi
- Research Center for Behavioral Disorders and Substance Abuse; Hamadan University of Medical Sciences; Hamadan Iran
| | - Iraj Amiri
- Endometrium and Endometriosis Research Center; Hamadan University of Medical Sciences; Hamadan Iran
| | - Iraj Salehi
- Neurophysiology Research Center; Hamadan University of Medical Sciences; Hamadan Iran
| | - Siamak Shahidi
- Neurophysiology Research Center; Hamadan University of Medical Sciences; Hamadan Iran
| | - Alireza Komaki
- Neurophysiology Research Center; Hamadan University of Medical Sciences; Hamadan Iran
| | - Mehdi Mehdizadeh
- Cellular and Molecular Research Center; Faculty of Advanced Technologies in Medicine, Department of Anatomy, Iran University of Medical Sciences; Tehran Iran
| | - Fahimeh Ghasemi Moravej
- Anatomy Department; School of Medicine, Hamadan University of Medical Sciences; Hamadan Iran
| | - Sara Soleimani Asl
- Research Center for Behavioral Disorders and Substance Abuse; Hamadan University of Medical Sciences; Hamadan Iran
- Anatomy Department; School of Medicine, Hamadan University of Medical Sciences; Hamadan Iran
| |
Collapse
|
4
|
Gómez-Vallejo V, Ugarte A, García-Barroso C, Cuadrado-Tejedor M, Szczupak B, Dopeso-Reyes IG, Lanciego JL, García-Osta A, Llop J, Oyarzabal J, Franco R. Pharmacokinetic investigation of sildenafil using positron emission tomography and determination of its effect on cerebrospinal fluid cGMP levels. J Neurochem 2016; 136:403-15. [PMID: 26641206 DOI: 10.1111/jnc.13454] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 11/17/2015] [Accepted: 11/20/2015] [Indexed: 11/29/2022]
Abstract
Sildenafil (Viagra) is a selective inhibitor of phosphodiesterase type 5 (PDE5), which degrades cyclic guanosine monophosphate to the linear nucleotide. Sildenafil is acutely used in erectile dysfunction and chronically in pulmonary hypertension. Evidence in the last decade shows that sildenafil may have potential as a therapeutic option for Alzheimer's disease or other neurodegenerative disorders. The purpose of this work was to explore whether sildenafil crosses the blood-brain barrier. Pharmacokinetic properties of sildenafil in rodents were investigated using (11) C-radiolabeling followed by in vivo positron emission tomography (PET) and ex vivo tissue dissection and gamma counting. PET results in rats suggest penetration into the central nervous system. Ex vivo data in perfused animals suggest that trapping of [(11) C]sildenafil within the cerebral vascular endothelium limits accumulation in the central nervous system parenchyma. Peroral sildenafil administration to Macaca fascicularis and subsequent chemical analysis of plasma and cerebrospinal fluid (CSF) using liquid chromatography coupled with tandem mass spectrometry showed that drug content in the CSF was high enough to achieve PDE5 inhibition, which was also demonstrated by the significant increases in CSF cyclic guanosine monophosphate levels. Central actions of sildenafil include both relaxation of the cerebral vasculature and inhibition of PDE5 in neurons and glia. This central action of sildenafil may underlie its efficacy in neuroprotection models, and may justify the continued search for a PDE5 ligand suitable for PET imaging. Sildenafil interacts with phosphodiesterase type 5 (PDE5) expressed in the endothelium and/or smooth muscle cells of brain vessels and also crosses the blood-brain barrier to interact with PDE5 expressed in brain cells. At therapeutic doses, the concentration of sildenafil in the cerebrospinal fluid (CSF) is high enough to inhibit PDE5 in the neural cells (neurons and glia). In turn, the concentration of cGMP likely increases in parenchymal cells and, as shown in this report, in the CSF. Read the Editorial Highlight for this article on page 220. Cover Image for this issue: doi: 10.1111/jnc.13302.
Collapse
Affiliation(s)
| | - Ana Ugarte
- Small Molecule Discovery Platform, Molecular Therapeutics Program, Centre for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
| | - Carolina García-Barroso
- Neurobiology of Alzheimer's disease, Neurosciences Division, Centre for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
| | - Mar Cuadrado-Tejedor
- Neurobiology of Alzheimer's disease, Neurosciences Division, Centre for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain.,Anatomy Department, School of Medicine, University of Navarra, Pamplona, Spain
| | | | - Iria G Dopeso-Reyes
- Neurosciences Division, Centre for Applied Medical Research, CIMA, University of Navarra, Pamplona, Spain.,Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas (CIBERNED), Pamplona, Spain.,Instituto de Investigaciones Sanitarias de Navarra (IdiSNA), Pamplona, Spain
| | - José L Lanciego
- Neurosciences Division, Centre for Applied Medical Research, CIMA, University of Navarra, Pamplona, Spain.,Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas (CIBERNED), Pamplona, Spain.,Instituto de Investigaciones Sanitarias de Navarra (IdiSNA), Pamplona, Spain
| | - Ana García-Osta
- Neurobiology of Alzheimer's disease, Neurosciences Division, Centre for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
| | - Jordi Llop
- Radiochemistry and Nuclear Imaging Group, CIC biomaGUNE, San Sebastian, Spain
| | - Julen Oyarzabal
- Small Molecule Discovery Platform, Molecular Therapeutics Program, Centre for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
| | - Rafael Franco
- Neurobiology of Alzheimer's disease, Neurosciences Division, Centre for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
| |
Collapse
|
5
|
Novel Radioligands for Cyclic Nucleotide Phosphodiesterase Imaging with Positron Emission Tomography: An Update on Developments Since 2012. Molecules 2016; 21:molecules21050650. [PMID: 27213312 PMCID: PMC6273803 DOI: 10.3390/molecules21050650] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 05/09/2016] [Accepted: 05/10/2016] [Indexed: 12/19/2022] Open
Abstract
Cyclic nucleotide phosphodiesterases (PDEs) are a class of intracellular enzymes that inactivate the secondary messenger molecules, cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP). Thus, PDEs regulate the signaling cascades mediated by these cyclic nucleotides and affect fundamental intracellular processes. Pharmacological inhibition of PDE activity is a promising strategy for treatment of several diseases. However, the role of the different PDEs in related pathologies is not completely clarified yet. PDE-specific radioligands enable non-invasive visualization and quantification of these enzymes by positron emission tomography (PET) in vivo and provide an important translational tool for elucidation of the relationship between altered expression of PDEs and pathophysiological effects as well as (pre-)clinical evaluation of novel PDE inhibitors developed as therapeutics. Herein we present an overview of novel PDE radioligands for PET published since 2012.
Collapse
|
6
|
Barros-Miñones L, Orejana L, Goñi-Allo B, Suquía V, Hervías I, Aguirre N, Puerta E. Modulation of the ASK1-MKK3/6-p38/MAPK signalling pathway mediates sildenafil protection against chemical hypoxia caused by malonate. Br J Pharmacol 2015. [PMID: 23186227 DOI: 10.1111/bph.12071] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND AND PURPOSE PD5 inhibitors have recently been reported to exert beneficial effects against ischaemia-reperfusion injury in several organs. However, there are few studies regarding their neuroprotective effects in brain ischaemia. The present study was designed to assess the effects of sildenafil against chemical hypoxia induced by malonate. Intrastriatal injection of malonate produces energy depletion and striatal lesions similar to that seen in cerebral ischaemia through mechanisms that involve generation of reactive oxygen species (ROS). EXPERIMENTAL APPROACH Volume lesion was analysed by cytochrome oxidase histochemistry. Generation of reactive species was determined by in situ visualization of superoxide production and nitrotyrosine measurement. Protein levels were determined by Western blot after subcellular fractionation. KEY RESULTS Sildenafil, given 30 min before malonate, significantly decreased the lesion volume in the rat. This protective effect cannot be attributed to any effect on ROS production but to the inhibition of downstream pathways. Thus, malonate induced the activation of apoptosis signal-regulating kinase-1 (ASK1) and two MAPK kinases, MKK3/6 and MKK7, which lead to an increased phosphorylation of JNK and p38 MAPK, effects that were blocked by sildenafil. Selective inhibitors of p38 and JNK (SB203580 or SP600125, respectively) were used in combination with malonate in order to evaluate the plausible implication of these pathways in the protection afforded by sildenafil. While inhibition of p38 provided a significant protection against malonate-induced neurotoxicity, inhibition of JNK did not. CONCLUSIONS AND IMPLICATIONS Sildenafil protects against the chemical hypoxia induced by malonate through the regulation of the ASK1-MKK3/6-p38/MAPK signalling pathway.
Collapse
Affiliation(s)
- L Barros-Miñones
- Department of Pharmacology, School of Pharmacy, University of Navarra, Pamplona, Spain
| | | | | | | | | | | | | |
Collapse
|
7
|
Masadeh MM, Alzoubi KH, Khabour OF, Al-Azzam SI. Ciprofloxacin-Induced Antibacterial Activity Is Attenuated by Phosphodiesterase Inhibitors. Curr Ther Res Clin Exp 2014; 77:14-7. [PMID: 26649077 PMCID: PMC4644238 DOI: 10.1016/j.curtheres.2014.11.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/22/2014] [Indexed: 12/04/2022] Open
Abstract
Background Ciprofloxacin is a commonly used antibiotic for urinary tract infection that interacts with bacterial topoisomerases leading to oxidative radicals generation and bacterial cell death. Phosphodiesterase inhibitors (PDEis), on the other hand, are commonly used drugs for the management of erectile dysfunction. The group includes agents such as sildenafil, vardenafil, and tadalafil. Objectives We investigated whether PDEi could interfere with the antibacterial activity of ciprofloxacin. Methods PDEis were tested in several reference bacteria, including Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Staphylococcus epidermidis, Acinetobacter baumannii, Proteus mirabilis, and Klebsiella pneumoniae utilizing a standard disc diffusion method and measuring both zones of inhibition and MIC. Results Results from both assays indicated that ciprofloxacin demonstrates potent activity against the tested reference bacteria. Additionally, when bacteria were treated with a combination of ciprofloxacin and sildenafil, tadalafil, or vardenafil, the zones of the combination inhibition were significantly reduced, whereas the MIC values were significantly greater than those of ciprofloxacin alone for all tested bacterial strains. In an attempt to examine the mechanism by which PDEis interfere with the action of ciprofloxacin, we utilized the in vitro E coli DNA gyrase cleavage assay. The results showed that PDEi drugs had no effect on ciprofloxacin’s inhibition of E coli gyrase activity. Conclusions Pretreatment of various reference bacterial cells with PDEis largely inhibited the antibacterial activity of ciprofloxacin.
Collapse
Affiliation(s)
- Majed M. Masadeh
- Department of Pharmaceutical Technology, Jordan University of Science and Technology, Irbid, Jordan
- Address correspondence to: Majed M. Masadeh, PhD, Department of Pharmaceutical Technology, Jordan University of Science and Technology, Irbid 22110, Jordan.
| | - Karem H. Alzoubi
- Department of Clinical Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Omar F. Khabour
- Department of Biology, Faculty of Science, Taibah University, Medina, Saudi Arabia
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, Jordan University of Science and Technology, Irbid, Jordan
| | - Sayer I. Al-Azzam
- Department of Clinical Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| |
Collapse
|
8
|
Phosphodiesterase 5 inhibition at disease onset prevents experimental autoimmune encephalomyelitis progression through immunoregulatory and neuroprotective actions. Exp Neurol 2014; 251:58-71. [DOI: 10.1016/j.expneurol.2013.10.021] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 10/25/2013] [Accepted: 10/30/2013] [Indexed: 12/15/2022]
|
9
|
Arafa MH, Atteia HH. Sildenafil citrate attenuates the deleterious effects of elevated ammonia. Toxicol Mech Methods 2013; 23:402-11. [DOI: 10.3109/15376516.2013.770109] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|