1
|
Pretreatment with combined low-level laser therapy and methylene blue improves learning and memory in sleep-deprived mice. Lasers Med Sci 2022; 37:2403-2412. [PMID: 35059872 DOI: 10.1007/s10103-021-03497-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 12/13/2021] [Indexed: 10/19/2022]
Abstract
Low-level laser therapy (LLLT) and methylene blue (MB) were proved to have neuroprotective effects. In this study, we evaluated the preventive effects of LLLT and MB alone and in combination to examine their efficacy against sleep deprivation (SD)-induced cognitive impairment. Sixty Balb/c male mice were randomly divided into five groups as follows: wide platform (WP), SD, LLLT, MB, LMB (treatment with both LLLT and MB). Daily MB (0.5 mg/kg) was injected for ten consecutive days. An 810-nm, 10-Hz pulsed laser was used in LLLT every other day. We used the T-maze test, social interaction test (SIT), and shuttle box to assess learning and memory and PSD-95, GAP-43, and synaptophysin (SYN) markers to examine synaptic proteins levels in the hippocampus. Our results showed that SD decreased alternation rate in the T-maze test, sociability and social novelty in SIT, and memory index in the shuttle box. Single treatments were not able to reverse these in most of the behavioral parameters. However, behavioral tests showed a significant difference between combined therapy and the SD group. The levels of synaptic plasticity markers were also significantly reduced after SD. There was a significant difference between the MB group and SD animals in GAP-43 and SYN biomarkers. Combination treatment with LLLT and MB also increased GAP-43, PSD-95, and SYN compared to the SD group. We found that the combined use of LLLT and MB pretreatment is more effective in protecting SD-induced cognitive impairment, which may be imparted via modulation of synaptic proteins.
Collapse
|
2
|
Mechanisms of Ataxia Telangiectasia Mutated (ATM) Control in the DNA Damage Response to Oxidative Stress, Epigenetic Regulation, and Persistent Innate Immune Suppression Following Sepsis. Antioxidants (Basel) 2021; 10:antiox10071146. [PMID: 34356379 PMCID: PMC8301080 DOI: 10.3390/antiox10071146] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/15/2021] [Accepted: 07/16/2021] [Indexed: 02/06/2023] Open
Abstract
Cells have evolved extensive signaling mechanisms to maintain redox homeostasis. While basal levels of oxidants are critical for normal signaling, a tipping point is reached when the level of oxidant species exceed cellular antioxidant capabilities. Myriad pathological conditions are characterized by elevated oxidative stress, which can cause alterations in cellular operations and damage to cellular components including nucleic acids. Maintenance of nuclear chromatin are critically important for host survival and eukaryotic organisms possess an elaborately orchestrated response to initiate repair of such DNA damage. Recent evidence indicates links between the cellular antioxidant response, the DNA damage response (DDR), and the epigenetic status of the cell under conditions of elevated oxidative stress. In this emerging model, the cellular response to excessive oxidants may include redox sensors that regulate both the DDR and an orchestrated change to the epigenome in a tightly controlled program that both protects and regulates the nuclear genome. Herein we use sepsis as a model of an inflammatory pathophysiological condition that results in elevated oxidative stress, upregulation of the DDR, and epigenetic reprogramming of hematopoietic stem cells (HSCs) to discuss new evidence for interplay between the antioxidant response, the DNA damage response, and epigenetic status.
Collapse
|
3
|
Perdhana F, Kloping NA, Witarto AP, Nugraha D, Yogiswara N, Luke K, Kloping YP, Rehatta NM. Methylene blue for vasoplegic syndrome in cardiopulmonary bypass surgery: A systematic review and meta-analysis. Asian Cardiovasc Thorac Ann 2021; 29:717-728. [PMID: 33653154 DOI: 10.1177/0218492321998523] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND To evaluate the benefit of methylene blue as an adjunct treatment by assessing hemodynamic, morbidity rate, intensive care unit length of stay, and mortality rate outcomes in adult patients with vasoplegic syndrome. METHODS A systematic search through electronic databases including Pubmed, Embase, Scopus, and Medline for studies assessing the use of methylene blue in patients with vasoplegic syndrome compared to control treatments. The Newcastle-Ottawa Scale tool was used for observational studies, and Jadad Scale was used for controlled trials to assess the risk of bias. RESULTS This systematic review included six studies for qualitative synthesis and five studies for quantitative synthesis. Pooled analysis revealed that mean arterial pressure, systemic vascular resistance, heart rate, and hospital stay were not statistically significant in methylene blue administration compared to control. However, administration of methylene blue in vasoplegic syndrome patients significantly reduces renal failure (OR = 0.25; 95% CI = 0.08-0.75), development of multiple organ failure (OR = 0.09; 95% CI = 0.02-0.51), and mortality rate (OR = 0.12; 95% CI = 0.03-0.46). CONCLUSION Adjunct administration of methylene blue for vasoplegic syndrome patients significantly reduces renal failure, multiple organ failure, and mortality.
Collapse
Affiliation(s)
- Fajar Perdhana
- Department of Anaesthesiology and Reanimation, Faculty of Medicine, Universitas Airlangga - Dr Soetomo General Hospital, Surabaya, Indonesia
| | | | - Andro P Witarto
- Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - David Nugraha
- Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
| | | | - Kevin Luke
- Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
| | | | - Nancy M Rehatta
- Department of Anaesthesiology and Reanimation, Faculty of Medicine, Universitas Airlangga - Dr Soetomo General Hospital, Surabaya, Indonesia
| |
Collapse
|
4
|
Cozene B, Antonucci I, Stuppia L. Activity of p53 in human amniotic fluid stem cells increases their potentiality as a candidate for stem cell therapy. Brain Circ 2019; 5:134-139. [PMID: 31620661 PMCID: PMC6785949 DOI: 10.4103/bc.bc_35_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 09/01/2019] [Accepted: 09/03/2019] [Indexed: 12/19/2022] Open
Abstract
The potential use of stem cells as a therapeutic treatment for many neurological disorders, such as stroke, has spiked an interest in their properties. Due to limitations of the present-day treatments, regenerative and protective therapies could prove very beneficial if a safe and effective treatment is identified. Using human amniotic fluid stem (hAFS) cells could theoretically provide both neuroprotective and regenerative properties to patients, and knowledge of p53's activity and function could be a key component in understanding the behavior and characteristics of these stem cells to harness their full potential. Many recent studies on p53 have provided new and valuable information that could give rise to new ideas for treatment options. More specifically, p53's activity inside hAFS cells lead them closer to becoming a potential therapeutic stem cell. Other neuroprotective treatments, such as hyperoxia and hypoxia sessions, are showing positive results. In combination, these data are helping to get closer to an effective treatment for neurological disorders.
Collapse
Affiliation(s)
- Blaise Cozene
- Department of Neurosurgery and Brain Repair, College of Medicine, University of South Florida Morsani, Tampa, FL, USA
| | - Ivana Antonucci
- Department of Psychological, Health and Territorial Sciences, Laboratory of Molecular Genetics, School of Medicine and Health Sciences, G. d'Annunzio University, Chieti-Pescara, Italy
| | - Liborio Stuppia
- Department of Psychological, Health and Territorial Sciences, Laboratory of Molecular Genetics, School of Medicine and Health Sciences, G. d'Annunzio University, Chieti-Pescara, Italy
| |
Collapse
|
5
|
Lactoferrin-phenothiazine dye interactions: Thermodynamic and kinetic approach. Int J Biol Macromol 2019; 136:559-569. [DOI: 10.1016/j.ijbiomac.2019.06.097] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 05/31/2019] [Accepted: 06/13/2019] [Indexed: 01/12/2023]
|
6
|
Hu J, Shao C, Wang X, Di X, Xue X, Su Z, Zhao J, Zhu H, Liu H, Qian Y. Imaging Dynamic Peroxynitrite Fluxes in Epileptic Brains with a Near-Infrared Fluorescent Probe. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1900341. [PMID: 31406668 PMCID: PMC6685465 DOI: 10.1002/advs.201900341] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 04/24/2019] [Indexed: 05/19/2023]
Abstract
Epilepsy is a chronic neurodegenerative disease, and accumulating evidence suggests its pathological progression is closely associated with peroxynitrite (ONOO-). However, understanding the function remains challenging due to a lack of in vivo imaging probes for ONOO- determination in epileptic brains. Here, the first near-infrared imaging probe (named ONP) is presented for tracking endogenous ONOO- in brains of kainate-induced epileptic seizures with high sensitivity and selectivity. Using this probe, the dynamic changes of endogenous ONOO- fluxes in epileptic brains are effectively monitored with excellent temporal and spatial resolution. In vivo visualization and in situ imaging of hippocampal regions clearly reveal that a higher concentration of ONOO- in the epileptic brains associates with severe neuronal damage and epileptogenesis; curcumin administration can eliminate excessively increased ONOO-, further effectively protecting neuronal cells. Moreover, by combining high-content analysis and ONP, a high-throughput screening method for antiepileptic inhibitors is constructed, which provides a rapid imaging/screening approach for understanding epilepsy pathology and accelerating antiseizure therapeutic discovery.
Collapse
Affiliation(s)
- Jiong‐sheng Hu
- School of Chemistry and Materials ScienceNanjing Normal UniversityWenyuan Road 1Nanjing210046China
| | - Chenwen Shao
- State Key Laboratory of Pharmaceutical BiotechnologySchool of Life SciencesNanjing UniversityXianlin Road 163Nanjing210023China
| | - Xueao Wang
- State Key Laboratory of Pharmaceutical BiotechnologySchool of Life SciencesNanjing UniversityXianlin Road 163Nanjing210023China
| | - Xiaojiao Di
- School of Chemistry and Materials ScienceNanjing Normal UniversityWenyuan Road 1Nanjing210046China
| | - Xuling Xue
- School of Chemistry and Materials ScienceNanjing Normal UniversityWenyuan Road 1Nanjing210046China
| | - Zhi Su
- School of Chemistry and Materials ScienceNanjing Normal UniversityWenyuan Road 1Nanjing210046China
| | - Jing Zhao
- State Key Laboratory of Pharmaceutical BiotechnologySchool of Life SciencesNanjing UniversityXianlin Road 163Nanjing210023China
| | - Hai‐Liang Zhu
- State Key Laboratory of Pharmaceutical BiotechnologySchool of Life SciencesNanjing UniversityXianlin Road 163Nanjing210023China
| | - Hong‐Ke Liu
- School of Chemistry and Materials ScienceNanjing Normal UniversityWenyuan Road 1Nanjing210046China
| | - Yong Qian
- School of Chemistry and Materials ScienceNanjing Normal UniversityWenyuan Road 1Nanjing210046China
| |
Collapse
|
7
|
Russo E, Nguyen H, Lippert T, Tuazon J, Borlongan CV, Napoli E. Mitochondrial targeting as a novel therapy for stroke. Brain Circ 2018; 4:84-94. [PMID: 30450413 PMCID: PMC6187947 DOI: 10.4103/bc.bc_14_18] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 08/21/2018] [Accepted: 09/10/2018] [Indexed: 01/16/2023] Open
Abstract
Stroke is a main cause of mortality and morbidity worldwide. Despite the increasing development of innovative treatments for stroke, most are unsuccessful in clinical trials. In recent years, an encouraging strategy for stroke therapy has been identified in stem cells transplantation. In particular, grafting cells and their secretion products are leading with functional recovery in stroke patients by promoting the growth and function of the neurovascular unit – a communication framework between neurons, their supply microvessels along with glial cells – underlying stroke pathology and recovery. Mitochondrial dysfunction has been recently recognized as a hallmark in ischemia/reperfusion neural damage. Emerging evidence of mitochondria transfer from stem cells to ischemic-injured cells points to transfer of healthy mitochondria as a viable novel therapeutic strategy for ischemic diseases. Hence, a more in-depth understanding of the cellular and molecular mechanisms involved in mitochondrial impairment may lead to new tools for stroke treatment. In this review, we focus on the current evidence of mitochondrial dysfunction in stroke, investigating favorable approaches of healthy mitochondria transfer in ischemic neurons, and exploring the potential of mitochondria-based cellular therapy for clinical applications. This paper is a review article. Referred literature in this paper has been listed in the references section. The data sets supporting the conclusions of this article are available online by searching various databases, including PubMed.
Collapse
Affiliation(s)
- Eleonora Russo
- Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair, University of South Florida, Morsani College of Medicine, Tampa, FL, USA
| | - Hung Nguyen
- Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair, University of South Florida, Morsani College of Medicine, Tampa, FL, USA
| | - Trenton Lippert
- Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair, University of South Florida, Morsani College of Medicine, Tampa, FL, USA
| | - Julian Tuazon
- Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair, University of South Florida, Morsani College of Medicine, Tampa, FL, USA
| | - Cesar V Borlongan
- Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair, University of South Florida, Morsani College of Medicine, Tampa, FL, USA
| | - Eleonora Napoli
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA, USA
| |
Collapse
|
8
|
Understanding the Role of Dysfunctional and Healthy Mitochondria in Stroke Pathology and Its Treatment. Int J Mol Sci 2018; 19:ijms19072127. [PMID: 30037107 PMCID: PMC6073421 DOI: 10.3390/ijms19072127] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 07/12/2018] [Accepted: 07/19/2018] [Indexed: 12/21/2022] Open
Abstract
Stroke remains a major cause of death and disability in the United States and around the world. Solid safety and efficacy profiles of novel stroke therapeutics have been generated in the laboratory, but most failed in clinical trials. Investigations into the pathology and treatment of the disease remain a key research endeavor in advancing scientific understanding and clinical applications. In particular, cell-based regenerative medicine, specifically stem cell transplantation, may hold promise as a stroke therapy, because grafted cells and their components may recapitulate the growth and function of the neurovascular unit, which arguably represents the alpha and omega of stroke brain pathology and recovery. Recent evidence has implicated mitochondria, organelles with a central role in energy metabolism and stress response, in stroke progression. Recognizing that stem cells offer a source of healthy mitochondria—one that is potentially transferrable into ischemic cells—may provide a new therapeutic tool. To this end, deciphering cellular and molecular processes underlying dysfunctional mitochondria may reveal innovative strategies for stroke therapy. Here, we review recent studies capturing the intimate participation of mitochondrial impairment in stroke pathology, and showcase promising methods of healthy mitochondria transfer into ischemic cells to critically evaluate the potential of mitochondria-based stem cell therapy for stroke patients.
Collapse
|
9
|
Wei P, Yuan W, Xue F, Zhou W, Li R, Zhang D, Yi T. Deformylation reaction-based probe for in vivo imaging of HOCl. Chem Sci 2018; 9:495-501. [PMID: 29619205 PMCID: PMC5868080 DOI: 10.1039/c7sc03784h] [Citation(s) in RCA: 124] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 11/01/2017] [Indexed: 12/18/2022] Open
Abstract
The detection of hypochlorous acid (HOCl) in vivo is vitally important because the local concentration of HOCl is highly correlated with some diseases such as atherosclerosis and rheumatoid arthritis. However, in vivo detection of HOCl remains a challenge due to the lack of a suitable probe. We report here a near-infrared (NIR) emissive "turn-on" probe (FDOCl-1) based on a methylene blue derivative, which can quickly detect HOCl via a newly found deformylation mechanism. FDOCl-1 displays remarkable selectivity and sensitivity towards HOCl. The dramatic changes in colour and NIR emission were used to detect HOCl in vitro and in vivo in a mouse arthritis model.
Collapse
Affiliation(s)
- Peng Wei
- Department of Chemistry , Collaborative Innovation Center of Chemistry for Energy Materials , Fudan University , 220 Handan Road , Shanghai 200433 , China .
| | - Wei Yuan
- Department of Chemistry , Collaborative Innovation Center of Chemistry for Energy Materials , Fudan University , 220 Handan Road , Shanghai 200433 , China .
| | - Fengfeng Xue
- Department of Chemistry , Collaborative Innovation Center of Chemistry for Energy Materials , Fudan University , 220 Handan Road , Shanghai 200433 , China .
| | - Wei Zhou
- Department of Chemistry , Collaborative Innovation Center of Chemistry for Energy Materials , Fudan University , 220 Handan Road , Shanghai 200433 , China .
| | - Ruohan Li
- Department of Chemistry , Collaborative Innovation Center of Chemistry for Energy Materials , Fudan University , 220 Handan Road , Shanghai 200433 , China .
| | - Datong Zhang
- Shandong Provincial Key Laboratory of Fine Chemicals , School of Chemistry and Pharmaceutical Engineering , Qilu University of Technology , Jinan 250353 , Shandong , China
| | - Tao Yi
- Department of Chemistry , Collaborative Innovation Center of Chemistry for Energy Materials , Fudan University , 220 Handan Road , Shanghai 200433 , China .
| |
Collapse
|
10
|
Li F, Geng X, Khan H, Pendy JT, Peng C, Li X, Rafols JA, Ding Y. Exacerbation of Brain Injury by Post-Stroke Exercise Is Contingent Upon Exercise Initiation Timing. Front Cell Neurosci 2017; 11:311. [PMID: 29051728 PMCID: PMC5633611 DOI: 10.3389/fncel.2017.00311] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 09/19/2017] [Indexed: 12/19/2022] Open
Abstract
Accumulating evidence has demonstrated that post-stroke physical rehabilitation may reduce morbidity. The effectiveness of post-stroke exercise, however, appears to be contingent upon exercise initiation. This study assessed the hypothesis that very early exercise exacerbates brain injury, induces reactive oxygen species (ROS) generation, and promotes energy failure. A total of 230 adult male Sprague-Dawley rats were subjected to middle cerebral artery (MCA) occlusion for 2 h, and randomized into eight groups, including two sham injury control groups, three non-exercise and three exercise groups. Exercise was initiated after 6 h, 24 h and 3 days of reperfusion. Twenty-four hours after completion of exercise (and at corresponding time points in non-exercise controls), infarct volumes and apoptotic cell death were examined. Early brain oxidative metabolism was quantified by examining ROS, ATP and NADH levels 0.5 h after completion of exercise. Furthermore, protein expressions of angiogenic growth factors were measured in order to determine whether post-stroke angiogenesis played a role in rehabilitation. As expected, ischemic stroke resulted in brain infarction, apoptotic cell death and ROS generation, and diminished NADH and ATP production. Infarct volumes and apoptotic cell death were enhanced (p < 0.05) by exercise that was initiated after 6 h of reperfusion, but decreased by late exercise (24 h, 3 days). This exacerbated brain injury at 6 h was associated with increased ROS levels (p < 0.05), and decreased (p < 0.05) NADH and ATP levels. In conclusion, very early exercise aggravated brain damage, and early exercise-induced energy failure with ROS generation may underlie the exacerbation of brain injury. These results shed light on the manner in which exercise initiation timing may affect post-stroke rehabilitation.
Collapse
Affiliation(s)
- Fengwu Li
- Department of Neurology, Luhe Hospital, Capital Medical University, Beijing, China
| | - Xiaokun Geng
- Department of Neurology, Luhe Hospital, Capital Medical University, Beijing, China.,Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States
| | - Hajra Khan
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States
| | - John T Pendy
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States
| | - Changya Peng
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States
| | - Xiaorong Li
- Department of Neurology, Luhe Hospital, Capital Medical University, Beijing, China
| | - Jose A Rafols
- Department of Anatomy and Cell Biology, Wayne State University School of Medicine, Detroit, MI, United States
| | - Yuchuan Ding
- Department of Neurology, Luhe Hospital, Capital Medical University, Beijing, China.,Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States
| |
Collapse
|
11
|
Duicu OM, Privistirescu A, Wolf A, Petruş A, Dănilă MD, Raţiu CD, Muntean DM, Sturza A. Methylene blue improves mitochondrial respiration and decreases oxidative stress in a substrate-dependent manner in diabetic rat hearts. Can J Physiol Pharmacol 2017; 95:1376-1382. [PMID: 28738167 DOI: 10.1139/cjpp-2017-0074] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Diabetic cardiomyopathy has been systematically associated with compromised mitochondrial energetics and increased generation of reactive oxygen species (ROS) that underlie its progression to heart failure. Methylene blue is a redox drug with reported protective effects mainly on brain mitochondria. The purpose of the present study was to characterize the effects of acute administration of methylene blue on mitochondrial respiration, H2O2 production, and calcium sensitivity in rat heart mitochondria isolated from healthy and 2 months (streptozotocin-induced) diabetic rats. Mitochondrial respiratory function was assessed by high-resolution respirometry. H2O2 production and calcium retention capacity were measured spectrofluorimetrically. The addition of methylene blue (0.1 μmol·L-1) elicited an increase in oxygen consumption of mitochondria energized with complex I and II substrates in both normal and diseased mitochondria. Interestingly, methylene blue elicited a significant increase in H2O2 release in the presence of complex I substrates (glutamate and malate), but had an opposite effect in mitochondria energized with complex II substrate (succinate). No changes in the calcium retention capacity of healthy or diabetic mitochondria were found in the presence of methylene blue. In conclusion, in cardiac mitochondria isolated from diabetic and nondiabetic rat hearts, methylene blue improved respiratory function and elicited a dichotomic, substrate-dependent effect on ROS production.
Collapse
Affiliation(s)
- Oana M Duicu
- a Department of Functional Sciences - Pathophysiology, "Victor Babeş" University of Medicine and Pharmacy of Timişoara, 2, Eftimie Murgu Sq., Timişoara 300041, Romania.,b Center for Translational Research and Systems Medicine, "Victor Babeş" University of Medicine and Pharmacy of Timişoara, Timişoara, Romania
| | - Andreea Privistirescu
- a Department of Functional Sciences - Pathophysiology, "Victor Babeş" University of Medicine and Pharmacy of Timişoara, 2, Eftimie Murgu Sq., Timişoara 300041, Romania
| | - Adrian Wolf
- a Department of Functional Sciences - Pathophysiology, "Victor Babeş" University of Medicine and Pharmacy of Timişoara, 2, Eftimie Murgu Sq., Timişoara 300041, Romania
| | - Alexandra Petruş
- a Department of Functional Sciences - Pathophysiology, "Victor Babeş" University of Medicine and Pharmacy of Timişoara, 2, Eftimie Murgu Sq., Timişoara 300041, Romania
| | - Maria D Dănilă
- a Department of Functional Sciences - Pathophysiology, "Victor Babeş" University of Medicine and Pharmacy of Timişoara, 2, Eftimie Murgu Sq., Timişoara 300041, Romania.,b Center for Translational Research and Systems Medicine, "Victor Babeş" University of Medicine and Pharmacy of Timişoara, Timişoara, Romania
| | - Corina D Raţiu
- a Department of Functional Sciences - Pathophysiology, "Victor Babeş" University of Medicine and Pharmacy of Timişoara, 2, Eftimie Murgu Sq., Timişoara 300041, Romania
| | - Danina M Muntean
- a Department of Functional Sciences - Pathophysiology, "Victor Babeş" University of Medicine and Pharmacy of Timişoara, 2, Eftimie Murgu Sq., Timişoara 300041, Romania.,b Center for Translational Research and Systems Medicine, "Victor Babeş" University of Medicine and Pharmacy of Timişoara, Timişoara, Romania
| | - Adrian Sturza
- a Department of Functional Sciences - Pathophysiology, "Victor Babeş" University of Medicine and Pharmacy of Timişoara, 2, Eftimie Murgu Sq., Timişoara 300041, Romania.,b Center for Translational Research and Systems Medicine, "Victor Babeş" University of Medicine and Pharmacy of Timişoara, Timişoara, Romania
| |
Collapse
|
12
|
Wu D, Shi J, Elmadhoun O, Duan Y, An H, Zhang J, He X, Meng R, Liu X, Ji X, Ding Y. Dihydrocapsaicin (DHC) enhances the hypothermia-induced neuroprotection following ischemic stroke via PI3K/Akt regulation in rat. Brain Res 2017; 1671:18-25. [PMID: 28684048 DOI: 10.1016/j.brainres.2017.06.029] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 06/27/2017] [Accepted: 06/28/2017] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Hypothermia has demonstrated neuroprotection following ischemia in preclinical studies while its clinical application is still very limited. The aim of this study was to explore whether combining local hypothermia in ischemic territory achieved by intra-arterial cold infusions (IACIs) with pharmacologically induced hypothermia enhances therapeutic outcomes, as well as the underlying mechanism. METHODS Sprague-Dawley rats were subjected to right middle cerebral artery occlusion (MCAO) for 2h using intraluminal hollow filament. The ischemic rats were randomized to receive: 1) pharmacological hypothermia by intraperitoneal (i.p.) injection of dihydrocapsaicin (DHC); 2) physical hypothermia by IACIs for 10min; or 3) the combined treatments. Extent of brain injury was determined by neurological deficit, infarct volume, and apoptotic cell death at 24h and/or 7d following reperfusion. ATP and ROS levels were measured. Expression of p-Akt, cleaved Caspase-3, pro-apoptotic (AIF, Bax) and anti-apoptotic proteins (Bcl-2, Bcl-xL) was evaluated at 24h. Finally, PI3K inhibitor was used to determine the effect of p-Akt. RESULTS DHC or IACIs each exhibited hypothermic effect and neuroprotection in rat MCAO models. The combination of pharmacological and physical approaches led to a faster and sustained reduction in brain temperatures and improved ischemia-induced injury than either alone (P<0.01). Furthermore, the combination treatment favorably increased the expression of anti-apoptotic proteins and decreased pro-apoptotic protein levels (P<0.01 or 0.05). This neuroprotective effect was largely blocked by p-Akt inhibition, indicating a potential role of Akt pathway in this mechanism (P<0.01 or 0.05). CONCLUSIONS The combination approach is able to enhance the efficiency of hypothermia and efficacy of hypothermia-induced neuroprotection following ischemic stroke. The findings here move us a step closer towards translating this long recognized TH from bench to bedside.
Collapse
Affiliation(s)
- Di Wu
- China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China; Beijing Key Laboratory of Hypoxia Conditioning Translational Medicine, Beijing, China; Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
| | - Jingfei Shi
- China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China; Beijing Key Laboratory of Hypoxia Conditioning Translational Medicine, Beijing, China
| | - Omar Elmadhoun
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Yunxia Duan
- China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Hong An
- China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Jun Zhang
- China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xiaoduo He
- China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Ran Meng
- China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xiangrong Liu
- China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xunming Ji
- China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China; Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China.
| | - Yuchuan Ding
- China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China; Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| |
Collapse
|
13
|
Li F, Pendy JT, Ding JN, Peng C, Li X, Shen J, Wang S, Geng X. Exercise rehabilitation immediately following ischemic stroke exacerbates inflammatory injury. Neurol Res 2017; 39:530-537. [PMID: 28415917 DOI: 10.1080/01616412.2017.1315882] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Fengwu Li
- China–America Institute of Neuroscience, Department of Neurology, Luhe Hospital, Capital Medical University, Beijing, China
| | - John T. Pendy
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Jessie N. Ding
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Changya Peng
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Xiaorong Li
- China–America Institute of Neuroscience, Department of Neurology, Luhe Hospital, Capital Medical University, Beijing, China
| | - Jiamei Shen
- China–America Institute of Neuroscience, Department of Neurology, Luhe Hospital, Capital Medical University, Beijing, China
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Sainan Wang
- China–America Institute of Neuroscience, Department of Neurology, Luhe Hospital, Capital Medical University, Beijing, China
| | - Xiaokun Geng
- China–America Institute of Neuroscience, Department of Neurology, Luhe Hospital, Capital Medical University, Beijing, China
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
- Department of Neurology, Luhe Hospital, Capital Medical University, Beijing, China
| |
Collapse
|
14
|
Abstract
Acute ischemic stroke (AIS) is a leading cause of disability and death worldwide. To date, intravenous tissue plasminogen activator and mechanical thrombectomy have been standards of care for AIS. There have been many advances in diagnostic imaging and endovascular devices for AIS; however, most neuroprotective therapies seem to remain largely in the preclinical phase. While many neuroprotective therapies have been identified in experimental models, none are currently used routinely to treat stroke patients. This review seeks to summarize clinical studies pertaining to neuroprotection, as well as the different preclinical neuroprotective therapies, their presumed mechanisms of action, and their future applications in stroke patients.
Collapse
|
15
|
Combination Treatment with Methylene Blue and Hypothermia in Global Cerebral Ischemia. Mol Neurobiol 2017; 55:2042-2055. [PMID: 28271403 DOI: 10.1007/s12035-017-0470-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 02/23/2017] [Indexed: 12/19/2022]
Abstract
Therapeutic hypothermia (TH) is the most potent therapeutic strategy for global cerebral ischemia (GCI), usually induced by cardiac arrest. TH has been shown both to suppress the delayed neuronal cell death in the vulnerable hippocampal CA1 subregion and to improve neurological outcomes in experimental animals after GCI. However, given the multiple adverse effects resulting from TH, application of such a therapy is typically limited. In recent years, methylene blue (MB) has emerged as a potential therapeutic drug for the treatment of neurodegenerative diseases. In this study, we investigated the beneficial effects of mild TH combined with MB treatment after GCI. We report that both the neuronal survival in the hippocampal CA1 region and the hippocampus-dependent spatial learning and memory in the combined treatment animals were enhanced compared to those in the single treatment animals. Mechanistic studies revealed that combined TH and MB treatment significantly attenuated mitochondrial dysfunction induced by GCI in the hippocampus CA1 region. The combined treatment also markedly suppressed GCI-induced reactive gliosis and inflammation and reduced oxidative stress while enhancing the antioxidant capacity of hippocampal CA1 neurons. Finally, combining TH and MB synergistically attenuated the intrinsic cytochrome c/caspase-3 apoptotic pathway induced by GCI. Our results suggest that TH and MB act synergistically to protect the ischemic brain and suppress cognitive impairment caused by GCI.
Collapse
|
16
|
Deshmukh P, Unni S, Krishnappa G, Padmanabhan B. The Keap1-Nrf2 pathway: promising therapeutic target to counteract ROS-mediated damage in cancers and neurodegenerative diseases. Biophys Rev 2017; 9:41-56. [PMID: 28510041 PMCID: PMC5425799 DOI: 10.1007/s12551-016-0244-4] [Citation(s) in RCA: 250] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 11/08/2016] [Indexed: 12/30/2022] Open
Abstract
The overproduction of reactive oxygen species (ROS) generates oxidative stress in cells. Oxidative stress results in various pathophysiological conditions, especially cancers and neurodegenerative diseases (NDD). The Keap1-Nrf2 [Kelch-like ECH-associated protein 1-nuclear factor (erythroid-derived 2)-like 2] regulatory pathway plays a central role in protecting cells against oxidative and xenobiotic stresses. The Nrf2 transcription factor activates the transcription of several cytoprotective genes that have been implicated in protection from cancer and NDD. The Keap1-Nrf2 system acts as a double-edged sword: Nrf2 activity protects cells and makes the cell resistant to oxidative and electrophilic stresses, whereas elevated Nrf2 activity helps in cancer cell survival and proliferation. Several groups in the recent past, from both academics and industry, have reported the potential role of Nrf2-mediated transcription to protect from cancer and NDD, resulting from mechanisms involving xenobiotic and oxidative stress. It suggests that the Keap1-Nrf2 system is a potential therapeutic target to combat cancer and NDD by designing and developing modulators (inhibitors/activators) for Nrf2 activation. Herein, we review and discuss the recent advancement in the regulation of the Keap1-Nrf2 system, its role under physiological and pathophysiological conditions including cancer and NDD, and modulators design strategies for Nrf2 activation.
Collapse
Affiliation(s)
- Prashant Deshmukh
- Department of Biophysics, National Institute of Mental Health and Neurosciences (NIMHANS), Hosur Road, Bangalore, 560029, India
| | - Sruthi Unni
- Department of Biophysics, National Institute of Mental Health and Neurosciences (NIMHANS), Hosur Road, Bangalore, 560029, India
| | - Gopinatha Krishnappa
- Department of Biophysics, National Institute of Mental Health and Neurosciences (NIMHANS), Hosur Road, Bangalore, 560029, India
| | - Balasundaram Padmanabhan
- Department of Biophysics, National Institute of Mental Health and Neurosciences (NIMHANS), Hosur Road, Bangalore, 560029, India.
| |
Collapse
|