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Chen Y, Zhang C, Du Y, Yang X, Liu M, Yang W, Lei G, Wang G. Exosomal transfer of microRNA-590-3p between renal tubular epithelial cells after renal ischemia-reperfusion injury regulates autophagy by targeting TRAF6. Chin Med J (Engl) 2022; 135:2467-2477. [PMID: 36449688 PMCID: PMC9945297 DOI: 10.1097/cm9.0000000000002377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Acute kidney injury (AKI) is a common complication in patients, especially elderly patients, who undergo cardiac surgery with cardiopulmonary bypass. Studies have indicated a protective role of autophagy in AKI. However, the mechanisms underlying the regulatory effect of autophagy in AKI among patients undergoing cardiac surgeries are poorly understood. In this study, we aimed to test the hypothesis that exosomal microRNAs (miRNAs) regulate autophagy in tubular epithelial cells after AKI. METHODS Plasma exosomal RNA was extracted from young and elderly AKI patients undergoing cardiac surgery, and the miRNAs expression during the perioperative period were analyzed using next-generation sequencing. The screened miRNAs and their target genes were subjected to gene oncology function and Kyoto Encyclopedia of Genes and Genome enrichment analyses. Renal tubular epithelial cell line (HK-2 cells) was cultured and hypoxia/reoxygenation (H/R) model was established, which is an in vitro renal ischemia/reperfusion (I/R) model. We used Western blot analysis, cell viability assay, transfection, luciferase assay to investigate the mechanisms underlying the observed increases in the levels of renal I/R injury-mediated exosomal miRNAs and their roles in regulating HK-2 cells autophagy. RESULTS miR-590-3p was highly enriched in the plasma exosomes of young AKI patients after cardiac surgery. Increased levels of miR-590-3p led to the increases in the expression of autophagy marker proteins, including Beclin-1 and microtubule associated protein 1 light chain 3 beta (LC3II), and prolonged the autophagic response in HK-2 cells after H/R treatment. These effects were achieved mainly via increases in the exosomal miR-590-3p levels, and the tumor necrosis factor receptor-associated factor 6 protein was shown to play a key role in I/R injury-mediated autophagy induction. CONCLUSION Exosomes released from HK-2 cells after renal I/R injury regulate autophagy by transferring miR-590-3p in a paracrine manner, which suggests that increasing the miR-590-3p levels in HK-2 cell-derived exosomes may increase autophagy and protect against kidney injury after renal I/R injury.
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Affiliation(s)
- Yimeng Chen
- Department of Anesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Congya Zhang
- Department of Anesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Yingjie Du
- Department of Anesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Xiying Yang
- Weifang Medical University, School of Anesthesiology, Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, Weifang, Shandong 261053, China
| | - Min Liu
- Department of Anesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Wenjing Yang
- Department of Anesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Guiyu Lei
- Department of Anesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Guyan Wang
- Department of Anesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
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Cavalcante LCDC, Rodrigues GM, Ribeiro Júnior RFG, Monteiro AM, Damasceno AVBS, Couteiro RP, Yasojima EY, Brito MVH, Percário S. Ischemic perconditioning on mesenteric ischemia/reperfusion injury in rats. Acta Cir Bras 2021; 36:e360903. [PMID: 34755763 PMCID: PMC8580514 DOI: 10.1590/acb360903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 08/09/2021] [Indexed: 11/22/2022] Open
Abstract
Purpose: To evaluate if the perconditioning affects the antioxidant capacity in
mesenteric ischemia and reperfusion injury. Methods: Twenty-one Wistar rats were assigned into three groups, as follows: Sham, IR
and rPER. The animals were subjected to mesenteric ischemia for 30 min. rPER
consisted of three cycles of 5-min hindlimb ischemia followed by 5 min
hindlimb perfusion at the same time to mesenteric ischemic period. After 5
minutes, blood and 5 cm of terminal ileum were harvested for thiobarbituric
acid reactive substances (TBARS) and Trolox equivalent antioxidant capacity
(TEAC) measurement. Results: rPER technique was able to reduce intestinal tissue TBARS levels
(p<0.0001), but no statistic difference was observed in blood levels
between groups, although it was verified similar results in rPER and Sham
group. rPER technique also enhanced TEAC levels in both blood (p = 0.0314)
and intestinal tissue (p = 0.0139), compared to IR group. Conclusions: rPER appears as the most promising technique to avoid IR injury. This
technique reduced TBARS levels in blood and intestinal tissue and promoted
the maintenance of antioxidant defense in mesenteric acute injury.
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Monteiro AM, Couteiro RP, Silva DFD, Trindade Júnior SC, Silva RC, Sousa LFFD, Santos DRD, Freitas JJDS, Brito MVH. Remote ischemic conditioning improves rat brain antioxidant defense in a time-dependent mechanism. Acta Cir Bras 2021; 36:e360707. [PMID: 34495142 PMCID: PMC8428670 DOI: 10.1590/acb360707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 06/22/2021] [Indexed: 08/30/2023] Open
Abstract
Purpose To clarify the best protocol for performing remote ischemic conditioning and
to minimize the consequences of ischemia and reperfusion syndrome in brain,
the present study aimed to evaluate different time protocols and the
relation of the organs and the antioxidant effects of this technique. Methods The rat’s left femoral artery was clamped with a microvascular clamp in times
that ranged from 1 to 5 minutes, according to the corresponding group. After
the cycles of remote ischemic conditioning and a reperfusion of 20 minutes,
the brain and the left gastrocnemius were collected. The samples were used
to measure glutathione peroxidase, glutathione reductase and catalase
levels. Results In the gastrocnemius, the 4-minute protocol increased the catalase
concentration compared to the 1-minute protocol, but the latter increased
both glutathione peroxidase and glutathione reductase compared to the
former. On the other hand, the brain demonstrated higher catalase and
glutathione peroxidase in 5-minute group, and the 3-minute group reached
higher values of glutathione reductase. Conclusions Remote ischemic conditioning increases brain antioxidant capacity in a
time-dependent way, while muscle presents higher protection on 1-minute
cycles and tends to decrease its defence with longer cycles of intermittent
occlusions of the femoral artery.
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Tercan M, Yılmaz İnal F, Seneldir H, Kocoglu H. Nephroprotective Efficacy of Sugammadex in Ischemia-Reperfusion Injury: An Experimental Study in a Rat Model. Cureus 2021; 13:e15726. [PMID: 34285839 PMCID: PMC8286175 DOI: 10.7759/cureus.15726] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/17/2021] [Indexed: 12/03/2022] Open
Abstract
Background: It is known that ischemia-reperfusion damage in the kidney is one of the most common causes of acute kidney failure. It is also known that reduced renal damage has a nephroprotective effect by reducing the release of inflammatory and vasoactive peptides that cause tissue damage. Therefore, we think that reperfusion caused by ischemia in kidney damage may be an important focus for clinical research. Methods: A total of 21 healthy 230-250 g female rats were used in our experimental study. During the experiment, animals were randomly divided into three groups, each containing seven rats. Group 1: The group that underwent left nephrectomy with a sham operation. Group 2: Left renal ischemia for 60 minutes, then left nephrectomy followed by 45 minutes of reperfusion. Group 3: Left renal ischemia for 60 minutes, then reperfusion for 45 minutes, followed by left nephrectomy. In this group, sugammadex was given intravenously at a dose of 100 mg/kg at the beginning of reperfusion. In the histomorphological examination, damage findings of tubules atrophy, dilation and cast formation, tubular epithelial brush border loss and vacuolization, presence of fibrosis as interstitial structural change, capillary vasodilatation/congestion and neutrophilic cell infiltrates in interstitial spaces, and morphological changes in glomeruli were evaluated. Results: When evaluated based on tubular brush border, there were no significant differences between Group 2 and Group 1 (P = 0.454), while the damage in Group 3 was less significant than Group 2 (P = 0.017). When evaluated in terms of tubular vacuolization, there was no significant difference between Group 2 and Group 1 (P = 0.902), while the damage in Group 3 was less significant than Group 2 (P = 0.017). Conclusion: We believe that 100 mg/kg sugammadex given at the beginning of reperfusion after one hour of ischemic condition on rats has a histochemically detectable nephroprotective effect.
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Affiliation(s)
- Mehmet Tercan
- Department of Anesthesiology and Reanimation, University of Health Sciences, Mehmet Akif Inan Research and Training Hospital, Sanliurfa, TUR
| | - Ferda Yılmaz İnal
- Department of Anesthesiology and Reanimation, Istanbul Medeniyet University, Istanbul, TUR
| | - Hatice Seneldir
- Department of Medical Pathology, Istanbul Medeniyet University, Istanbul, TUR
| | - Hasan Kocoglu
- Department of Anesthesiology and Reanimation, Istanbul Medeniyet University, Istanbul, TUR
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Akinci SB, Saricaoglu F, Akinci M, Turgut HC, Zeybek ND, Muftuoglu S. Remote Ischemic Conditioning Increases Organ Injury in Murine Sepsis: Experimental Research. Indian J Surg 2021. [DOI: 10.1007/s12262-021-02866-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Padmavathi G, Ramkumar KM. MicroRNA mediated regulation of the major redox homeostasis switch, Nrf2, and its impact on oxidative stress-induced ischemic/reperfusion injury. Arch Biochem Biophys 2021; 698:108725. [PMID: 33326800 DOI: 10.1016/j.abb.2020.108725] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 11/21/2020] [Accepted: 12/11/2020] [Indexed: 12/13/2022]
Abstract
Ischemia/reperfusion injury (IRI) initiates from oxidative stress caused by lack of blood supply and subsequent reperfusion. It is often associated with sterile inflammation, cell death and microvascular dysfunction, which ultimately results in myocardial, cerebral and hepatic IRIs. Reportedly, deregulation of Nrf2 pathway plays a significant role in the oxidative stress-induced IRIs. Further, microRNAs (miRNAs/miRs) are proved to regulate the expression and activation of Nrf2 by targeting either the 3'-UTR or the upstream regulators of Nrf2. Additionally, compounds (crocin, ZnSO4 and ginsenoside Rg1) that modulate the levels of the Nrf2-regulating miRNAs were found to exhibit a protective effect against IRIs of different organs. Therefore, the current review briefs the impact of ischemia reperfusion (I/R) pathogenesis in various organs, role of miRNAs in the regulation of Nrf2 and the I/R protective effect of compounds that alter their expression.
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Affiliation(s)
- Ganesan Padmavathi
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India
| | - Kunka Mohanram Ramkumar
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India; Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India.
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Silence of Long Noncoding RNA SNHG14 Alleviates Ischemia/Reperfusion-Induced Acute Kidney Injury by Regulating miR-124-3p/MMP2 Axis. BIOMED RESEARCH INTERNATIONAL 2021; 2021:8884438. [PMID: 33490282 PMCID: PMC7803415 DOI: 10.1155/2021/8884438] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/30/2020] [Accepted: 12/19/2020] [Indexed: 12/21/2022]
Abstract
Purpose Ample evidence has proved that lncRNAs are pivotal regulators in acute kidney injury (AKI). Here, we focus on the role and mechanism of lncRNA SNHG14 in ischemia/reperfusion- (I/R-) caused AKI. Methods I/R and hypoxia/reoxygenation (H/R) were applied to induce rats and HK-2 cells to establish AKI models in vivo and in vitro. Relative expression of SNHG14, miR-124-3p, and MMP2 was determined by qRT-PCR. HE staining was used to evaluate pathological changes in renal tissues, and acute tubular necrosis (ATN) score was calculated. Renal function was evaluated by measuring serum creatinine content and blood urea nitrogen content. Levels of IL-1β, IL-6, and TNF-α were measured by ELISA. Cell viability was examined by MTT assay. Oxidative stress was assessed by measuring SOD, MDA, and ROS levels. The target of SNHG14 or miR-124-3p was verified by DLR assay. Protein expression of MMP2 was examined by western blot. Results SNHG14 was boosted in renal tissues of I/R-stimulated rats and H/R-induced HK-2 cells, while miR-124-3p was diminished in H/R-stimulated HK-2 cells. Si-SNHG14 or miR-124-3p mimics repressed inflammation and oxidative stress and enhanced cell viability in H/R-stimulated HK-2 cells. Sh-SNHG14 mitigated I/R-induced AKI in rats. MiR-124-3p was targeted by SNHG14, and MMP2 was targeted by miR-124-3p. Inhibition of miR-124-3p or upregulation of MMP2 reversed inhibitory effects of SNHG14 silence on inflammation and oxidative stress as well as the promoting effect of SNHG14 silence on cell viability in H/R-induced HK-2 cells. Conclusion Knockdown of SNHG14 alleviated I/R-induced AKI by miR-124-3p-mediated downregulation of MMP2.
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Şen E, Kaplan DS, Bozdağ Z, Örkmez M, Mızrak A, Şen H, Bayrak Ö. The effect of tramadol on oxidative stress total antioxidant levels in rats with renal ischemia-reperfusion injury. Turk J Urol 2020; 46:388-392. [PMID: 32915716 DOI: 10.5152/tud.2020.20227] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 07/16/2020] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To evaluate the protective effect of tramadol on renal tissue in rats with induced renal ischemia-reperfusion injury (I/R injury), and its effects on oxidative stress. MATERIAL AND METHODS Thirty adult, male Wistar rats weighing 250-300 g were selected as subjects. Rats were randomized into 3 groups: group 1, sham; group 2, renal I/R injury; and group 3, renal I/R+Tramadol. In order to obtain ischemia in groups 2 and 3, renal artery was clamped for 1 h. Total oxidant status (TOS) and total antioxidant capacity (TAC) were analyzed using biochemical assays in the serum samples. RESULTS TOS values were measured as 1.68±0.4 in group 1, 3.35±1.0 in group 2, and 3.49±0.9 in group 3. When group 1 was compared with group 2 and group 3, the TOS values of group 1 were significantly lower (p<0.05), whereas there was no difference between group 2 and group 3 (p>0.05). TAC values were measured as 1.65±1.4 in group 1, 1.85±0.1 in group 2, and 2.79±0.6 in group 3. The antioxidant status of group 1 was not significantly different from that of group 2 (p>0.05), whereas there was a significant difference between group 1 and group 3 (p>0.05). CONCLUSIONS Tramadol has positive effects on antioxidant levels in renal I/R injury. We think that tramadol may be used in patients who underwent renal surgery and have I/R injury risk. There is a need for studies on this subject including human series.
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Affiliation(s)
- Elzem Şen
- Department of Anesthesiology and Reanimation, Gaziantep University Faculty of Medicine, Gaziantep, Turkey
| | - Davut Sinan Kaplan
- Department of Physiology, Gaziantep University Faculty of Medicine, Gaziantep, Turkey
| | - Zehra Bozdağ
- Department of Pathology, Gaziantep University Faculty of Medicine, Gaziantep, Turkey
| | - Mustafa Örkmez
- Department of Biochemistry, Gaziantep University Faculty of Medicine, Gaziantep, Turkey
| | - Ayşe Mızrak
- Department of Anesthesiology and Reanimation, Gaziantep University Faculty of Medicine, Gaziantep, Turkey
| | - Haluk Şen
- Department of Urology, Gaziantep University Faculty of Medicine, Gaziantep, Turkey
| | - Ömer Bayrak
- Department of Urology, Gaziantep University Faculty of Medicine, Gaziantep, Turkey
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Junho CVC, Caio-Silva W, Trentin-Sonoda M, Carneiro-Ramos MS. An Overview of the Role of Calcium/Calmodulin-Dependent Protein Kinase in Cardiorenal Syndrome. Front Physiol 2020; 11:735. [PMID: 32760284 PMCID: PMC7372084 DOI: 10.3389/fphys.2020.00735] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 06/08/2020] [Indexed: 12/14/2022] Open
Abstract
Calcium/calmodulin-dependent protein kinases (CaMKs) are key regulators of calcium signaling in health and disease. CaMKII is the most abundant isoform in the heart; although classically described as a regulator of excitation–contraction coupling, recent studies show that it can also mediate inflammation in cardiovascular diseases (CVDs). Among CVDs, cardiorenal syndrome (CRS) represents a pressing issue to be addressed, considering the growing incidence of kidney diseases worldwide. In this review, we aimed to discuss the role of CaMK as an inflammatory mediator in heart and kidney interaction by conducting an extensive literature review using the database PubMed. Here, we summarize the role and regulating mechanisms of CaMKII present in several quality studies, providing a better understanding for future investigations of CamKII in CVDs. Surprisingly, despite the obvious importance of CaMKII in the heart, very little is known about CaMKII in CRS. In conclusion, more studies are necessary to further understand the role of CaMKII in CRS.
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Affiliation(s)
| | - Wellington Caio-Silva
- Center of Natural and Human Sciences (CCNH), Universidade Federal do ABC, Santo André, Brazil
| | - Mayra Trentin-Sonoda
- Division of Nephrology, Department of Medicine, Kidney Research Centre, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada
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Damasceno AVBS, de Barros CAV, Percario S, Ribeiro RFG, Monteiro AM, Gouveia EHH, Henriques HYB. Remote ischemic conditioning protects against testicular ischemia∕reperfusion injury in rats. Acta Cir Bras 2020; 35:e202000203. [PMID: 32348402 PMCID: PMC7184938 DOI: 10.1590/s0102-865020200020000003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 12/05/2019] [Accepted: 01/03/2020] [Indexed: 11/23/2022] Open
Abstract
Purpose To evaluate the effect of remote ischemic conditioning associated to N-acetylcysteine (NAC) on testicular ischemia∕reperfusion (I∕R) injury in rats. Methods Twenty-five adult male Wistar rats were randomly distributed into five experimental groups (n=5), as follows: Sham, I∕R, Perconditioning (PER), NAC and PER+NAC. Two-hour ischemia was induced by rotating the left testis 720° to clockwise direction, followed by 4 hours of reperfusion. Perconditioning was performed by three I/R cycles of 10 min each on the left limb, 30 min before reperfusion. N-acetylcysteine (150 mg∕kg) was administered 30 min before reperfusion. Results Statistical differences were observed in MDA levels between I/R group with all groups (p<0.01), in addition there was statistical difference between PER and Sham, and PER+ NAC groups (p<0.05) in plasma. Conclusions The protective effect of perconditioning isolated in the reduction of lipid peroxidation related to oxidative stress was demonstrated. However, when Perconditioning was associated with NAC, there was no protective effect against testicular injury of ischemia and reperfusion.
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Affiliation(s)
- Ananda Vitória Barros Suzuki Damasceno
- Graduate student, School of Medicine, Universidade do Estado do Pará (UEPA), Belem-PA, Brazil. Care of animals, technical procedures, interpretation of data, manuscript preparation
| | - Charles Alberto Villacorta de Barros
- PhD, Full Professor, Head, Division Surgical Abilities, UEPA, Belem-PA, Brazil. Conception, design, and scientific content of study, critical revision
| | - Sandro Percario
- PhD, DSc, Associate Professor, Oxidative Stress Research Lab Coordinator, UEPA, Belem-PA, Brazil. Conception and design of the study, statistical analysis, English version, critical revision
| | - Rubens Fernando Gonçalves Ribeiro
- Master, Postgraduate Program in Surgery and Experimental Research, UEPA, Belem-PA, Brazil. Statistical analysis, manuscript preparation, English version
| | - Andrew Moraes Monteiro
- Graduate student, UEPA, Belem-PA, Brazil. Care of the animals, technical procedures, interpretation of data, manuscript preparation
| | - Eduardo Henrique Herbster Gouveia
- MD, Graduated from Centro Universitário do Estado do Pará. Brazil. Care of animals, technical procedures, interpretation of data, manuscript preparation
| | - Higor Yuri Bezerra Henriques
- MD, Graduated from Centro Universitário do Estado do Pará. Brazil. Care of animals, technical procedures, interpretation of data, manuscript preparation
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Zhou D, Ding J, Ya J, Pan L, Wang Y, Ji X, Meng R. Remote ischemic conditioning: a promising therapeutic intervention for multi-organ protection. Aging (Albany NY) 2019; 10:1825-1855. [PMID: 30115811 PMCID: PMC6128414 DOI: 10.18632/aging.101527] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Accepted: 08/10/2018] [Indexed: 12/21/2022]
Abstract
Despite decades of formidable exploration, multi-organ ischemia-reperfusion injury (IRI) encountered, particularly amongst elderly patients with clinical scenarios, such as age-related arteriosclerotic vascular disease, heart surgery and organ transplantation, is still an unsettled conundrum that besets clinicians. Remote ischemic conditioning (RIC), delivered via transient, repetitive noninvasive IR interventions to distant organs or tissues, is regarded as an innovative approach against IRI. Based on the available evidence, RIC holds the potential of affording protection to multiple organs or tissues, which include not only the heart and brain, but also others that are likely susceptible to IRI, such as the kidney, lung, liver and skin. Neuronal and humoral signaling pathways appear to play requisite roles in the mechanisms of RIC-related beneficial effects, and these pathways also display inseparable interactions with each other. So far, several hurdles lying ahead of clinical translation that remain to be settled, such as establishment of biomarkers, modification of RIC regimen, and deep understanding of underlying minutiae through which RIC exerts its powerful function. As this approach has garnered an increasing interest, herein, we aim to encapsulate an overview of the basic concept and postulated protective mechanisms of RIC, highlight the main findings from proof-of-concept clinical studies in various clinical scenarios, and also to discuss potential obstacles that remain to be conquered. More well designed and comprehensive experimental work or clinical trials are warranted in future research to confirm whether RIC could be utilized as a non-invasive, inexpensive and efficient adjunct therapeutic intervention method for multi-organ protection.
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Affiliation(s)
- Da Zhou
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China.,Department of China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China.,National Clinical Research Center for Geriatric Disorders, Beijing, China
| | - Jiayue Ding
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China.,Department of China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China.,National Clinical Research Center for Geriatric Disorders, Beijing, China
| | - Jingyuan Ya
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China.,Department of China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China.,National Clinical Research Center for Geriatric Disorders, Beijing, China
| | - Liqun Pan
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China.,Department of China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China.,National Clinical Research Center for Geriatric Disorders, Beijing, China
| | - Yuan Wang
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China.,Department of China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China.,National Clinical Research Center for Geriatric Disorders, Beijing, China
| | - Xunming Ji
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.,Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China.,Department of China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China.,National Clinical Research Center for Geriatric Disorders, Beijing, China
| | - Ran Meng
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China.,Department of China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China.,National Clinical Research Center for Geriatric Disorders, Beijing, China
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12
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Remote Postischemic Conditioning Promotes Stroke Recovery by Shifting Circulating Monocytes to CCR2 + Proinflammatory Subset. J Neurosci 2019; 39:7778-7789. [PMID: 31427395 DOI: 10.1523/jneurosci.2699-18.2019] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 06/17/2019] [Accepted: 07/26/2019] [Indexed: 02/06/2023] Open
Abstract
Brain injury from stroke is typically considered an event exclusive to the CNS, but injury progression and repair processes are profoundly influenced by peripheral immunity. Stroke stimulates an acute inflammatory response that results in a massive infiltration of peripheral immune cells into the ischemic area. While these cells contribute to the development of brain injury, their recruitment has been considered as a key step for tissue repair. The paradoxical role of inflammatory monocytes in stroke raises the possibility that the manipulation of peripheral immune cells before infiltration into the brain could influence stroke outcome. One such manipulation is remote ischemic limb conditioning (RLC), which triggers an endogenous tolerance mechanism. We observed that mice subjected to poststroke RLC shifted circulating monocytes to a CCR2+ proinflammatory monocyte subset and had reduced acute brain injury, swelling, and improved motor/gait function in chronic stroke. The RLC benefits were observed regardless of injury severity, with a greater shift to a CCR2+ subset in severe stroke. Adoptive transfer of CCR2-deficient monocytes abolished RLC-mediated protection. The study demonstrates the importance of RLC-induced shift of monocytes to a CCR2+ proinflammatory subset in attenuating acute injury and promoting functional recovery in chronic stroke. The defined immune-mediated mechanism underlying RLC benefits allows for an evidence-based framework for the development of immune-based therapeutic strategies for stroke patients.SIGNIFICANCE STATEMENT Stroke is the leading cause of physical disability worldwide but has few treatment options for patients. Because remote ischemic limb conditioning (RLC) elicits endogenous tolerance in neither an organ- nor a tissue-specific manner, the immune system has been considered a mediator for an RLC-related benefit. Application of RLC after stroke increased a proinflammatory CCR2+ monocyte subset in the blood and the brain. RLC reduced acute stroke injury and promoted motor/gait function during the recovery phase. The RLC benefits were absent in mice that received CCR2-deficient monocytes. This preclinical study shows the importance of CCR2+ proinflammatory monocytes in RLC benefits in stroke and provides a therapeutic RLC platform as a novel immune strategy to improve outcomes in stroke patients.
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13
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Shen Y, Zhao Y, Wang L, Zhang W, Liu C, Yin A. MicroRNA-194 overexpression protects against hypoxia/reperfusion-induced HK-2 cell injury through direct targeting Rheb. J Cell Biochem 2019; 120:8311-8318. [PMID: 30485514 DOI: 10.1002/jcb.28114] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 10/29/2018] [Indexed: 01/24/2023]
Abstract
Renal ischemia-reperfusion injury, a major cause of renal failure, always leads to acute kidney injury and kidney fibrosis. MicroRNAs (miRs) have been reported to be associated with renal ischemia-reperfusion injury. miR-194 was downregulated following renal ischemia-reperfusion injury; however, the function and mechanism of miR-194 in renal ischemia-reperfusion injury have not yet been fully understood. In the present study, we constructed renal ischemia-reperfusion injury model in vitro through treatment of human kidney proximal tubular epithelial cells HK-2 by hypoxia/reperfusion (H/R). We observed that miR-194 was decreased in H/R-induced HK-2 cells. miR-194 mimic increased H/R-induced HK-2 cell survival, whereas miR-194 inhibitor further strengthened H/R- inhibited HK-2 cell survival. Also, we observed that miR-194 overexpression suppressed oxidative stress markers, including malondialdehyde, glutathione, and secretion of pro-inflammatory cytokines, including IL-6, IL-1β, and TNF-α; however, miR-194 inhibitor showed the reverse effects. Results from dual-luciferase analysis confirmed that Ras homology enriched in brain (Rheb) was a direct target of miR-194. Finally, we corroborated that miR-194 affected cell growth, oxidative stress, and inflammation through targeting Rheb in H/R-induced HK-2 cells. In conclusion, our results suggested that miR-194 protect against H/R-induced injury in HK-2 cells through direct targeting Rheb.
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Affiliation(s)
- Yan Shen
- Department of Nephrology, First Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, China
| | - Yan Zhao
- Department of Cardiovascular Medicine, First Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, China
| | - Lijun Wang
- Department of Cardiovascular Medicine, First Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, China
| | - Wenjing Zhang
- Department of Nephrology, First Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, China
| | - Chao Liu
- Department of Nephrology, First Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, China
| | - Aiping Yin
- Department of Nephrology, First Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, China
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14
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Motta GL, Souza PC, Santos EBD, Bona SR, Schaefer PG, Lima CAT, Marroni NAP, Corso CO. Effects of remote ischemic preconditioning and topical hypothermia in renal ischemia-reperfusion injury in rats. Acta Cir Bras 2018; 33:396-407. [DOI: 10.1590/s0102-865020180050000001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 04/12/2018] [Indexed: 11/22/2022] Open
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15
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Chen G, Thakkar M, Robinson C, Doré S. Limb Remote Ischemic Conditioning: Mechanisms, Anesthetics, and the Potential for Expanding Therapeutic Options. Front Neurol 2018; 9:40. [PMID: 29467715 PMCID: PMC5808199 DOI: 10.3389/fneur.2018.00040] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 01/17/2018] [Indexed: 12/23/2022] Open
Abstract
Novel and innovative approaches are essential in developing new treatments and improving clinical outcomes in patients with ischemic stroke. Remote ischemic conditioning (RIC) is a series of mechanical interruptions in blood flow of a distal organ, following end organ reperfusion, shown to significantly reduce infarct size through inhibition of oxidation and inflammation. Ischemia/reperfusion (I/R) is what ultimately leads to the irreversible brain damage and clinical picture seen in stroke patients. There have been several reports and reviews about the potential of RIC in acute ischemic stroke; however, the focus here is a comprehensive look at the differences in the three types of RIC (remote pre-, per-, and postconditioning). There are some limited uses of preconditioning in acute ischemic stroke due to the unpredictability of the ischemic event; however, it does provide the identification of biomarkers for clinical studies. Remote limb per- and postconditioning offer a more promising treatment during patient care as they can be harnessed during or after the initial ischemic insult. Though further research is needed, it is imperative to discuss the importance of preclinical data in understanding the methods and mechanisms involved in RIC. This understanding will facilitate translation to a clinically feasible paradigm for use in the hospital setting.
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Affiliation(s)
- Gangling Chen
- Department of Anesthesiology, Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, FL, United States.,Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing, China
| | - Mrugesh Thakkar
- Department of Anesthesiology, Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, FL, United States
| | - Christopher Robinson
- McKnight Brain Institute, University of Florida, Gainesville, FL, United States.,Department of Neurology, University of Florida, Gainesville, FL, United States
| | - Sylvain Doré
- Department of Anesthesiology, Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, FL, United States.,McKnight Brain Institute, University of Florida, Gainesville, FL, United States.,Department of Neurology, University of Florida, Gainesville, FL, United States.,Department of Psychiatry, University of Florida, Gainesville, FL, United States.,Department of Pharmaceutics, University of Florida, Gainesville, FL, United States.,Department of Psychology, University of Florida, Gainesville, FL, United States.,Department of Neuroscience, University of Florida, Gainesville, FL, United States
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