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Open research questions in Cardiac Ischemia and Reperfusion

75 unresolved questions extracted from the limitations and future-work sections of 258 Cardiac Ischemia and Reperfusion papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The study used an ex vivo lung perfusion model. The study used a limited number of experimental groups. The study did not investigate the long-term effects of DMM treatment.

    Dimethyl malonate suppresses succinate dehydrogenase to alleviate ischemia/reperfusion-induced acute lung injury · 2026 · DOI

  • Investigate the long-term effects of DMM treatment. Explore the potential of DMM as a therapeutic agent for other forms of IR-induced damage. Examine the effects of DMM on other cellular processes involved in IR injury.

    Dimethyl malonate suppresses succinate dehydrogenase to alleviate ischemia/reperfusion-induced acute lung injury · 2026 · DOI

  • Mitochondrial dysfunction plays a crucial role in the development of LL-IRI. Microvascular dysfunction is a main pathogenic factor of IRI. The molecular mechanisms of microvascular injury and endothelial cell death remain unclear.

    Advances in the treatment of lower-extremity ischemia-reperfusion injury · 2025 · DOI

  • This lack of consensus poses challenges for surgeons, perfusionists, and anesthesiologists alike.

    Impact of adenosine in controlled aortic root reperfusion on clinical outcomes among patients undergoing valvular heart surgery · 2026 · DOI

  • Despite its clinical significance, the mechanisms underlying IRI remain poorly understood, and no specific targeted drugs or effective emergency interventions are currently available.

    Advances in the treatment of lower-extremity ischemia-reperfusion injury · 2025 · DOI

  • Ischemia/reperfusion (I/R) after myocardial infarction is a serious complication and whether certain gut bacteria can serve as a treatment option remains unclear.

    Prophylactic Supplementation with Lactobacillus Reuteri or Its Metabolite GABA Protects Against Acute Ischemic Cardiac Injury · 2024 · DOI

  • The relationship between IPC and myocardial stunning remains incompletely understood.

    Ischemic preconditioning affects phosphosites and accentuates myocardial stunning while reducing infarction size in rats · 2024 · DOI

  • Venoarterial extracorporeal membrane oxygenation (VA-ECMO) use to provide hemodynamic support for acute myocardial infarction has grown exponentially, is associated with poor outcomes, and is under active clinical investigation, yet the mechanistic effect of VA-ECMO on myocardial damage in acute myocardial infarction remains poorly understood.

    Novel Role for Cardiolipin as a Target of Therapy to Mitigate Myocardial Injury Caused by Venoarterial Extracorporeal Membrane Oxygenation · 2024 · DOI

  • Drug repurposing, the identification of novel targets, and the assessment of agents or therapeutic strategies with potential synergistic or additive effects, in combination with an increased understanding of the complex AMI pathophysiology and improved translational models adapted to emerging technologies, appear to unearth a potential that, for sure, holds promise and needs to be explored to reduce the burden of heart failure development and overall cardiovascular death.

    Novel cardioprotective approaches in ischaemic heart disease · 2024 · DOI

  • Except as a potassium channel opener, nicorandil may play a cardioprotective role by regulating metallothionein, and its specific mechanism remains to be elucidated.

    Nicorandil activates lkb1-ampk signaling pathway to ameliorate cardiac remodeling after myocardial ischemia/reperfusion injury by upregulating mt2 · 2024 · DOI

  • 7 However, the immature foetal- or neonatal-like phenotype of iPSC-CMs is a key limitation for reliable prediction of in vivo-like pharmacological responses from in vitro drug testing.

    European Research Council-funded grant: development of a novel cardiac tissue model · 2024 · DOI

  • Background Ischemic conditioning‐induced cardioprotection was attenuated by dyslipidemia in some animal and clinical studies, which is not investigated in patients with stroke.

    Dyslipidemia and Efficacy of Remote Ischemic Conditioning in Acute Moderate Ischemic Stroke: A Post Hoc Analysis of the RICAMIS Study · 2024 · DOI

  • Postoperative delirium and cognitive dysfunction are common and debilitating complications in surgical patients. Current treatment and management options have limited effectiveness. Remote ischemic conditioning is a potential intervention, but its effects on neurocognitive outcomes are unclear.

    Effects of perioperative remote ischemic conditioning on postoperative delirium and cognitive outcomes: a systematic review and meta-analysis of randomized controlled trials · 2026 · DOI

  • There is a lack of evidence on the effects of perioperative RIC on neurocognitive outcomes. Prior studies have investigated the effects of various interventions on POD and POCD, but the evidence on RIC is limited.

    Effects of perioperative remote ischemic conditioning on postoperative delirium and cognitive outcomes: a systematic review and meta-analysis of randomized controlled trials · 2026 · DOI

  • Remote ischemic conditioning is a safe and highly translatable therapeutic strategy for ischemic stroke. It exerts multifaceted neuroprotective and neurorestorative effects. These effects occur through the modulation of neuroinflammation and diverse pro- grammed cell death pathways. The treatment also preserves BBB integrity, promotes angiogenesis, and enhances remyelination. The specific timing of intervention is critical. However, this review has certain limitations. First, this article extensively describes the neuroprotective effects of RIPostC. It fails to compare RIPostC with other treatments. It also lacks a summary of mechanistic differences. This omission largely occurs because current research focuses heavily on RIPostC. Second, RIC is an effective treatment for multiple diseases. However, this review focuses solely on ischemic stroke. In summary, current research indicates a clear trend. The therapeutic efficacy of RIC strictly depends on successful cerebral reperfusion. The combined application of RIPreC and RIPostC shows significant benefits. These benefits appear specifically in patients with successful vessel recanalization. Furthermore, re- searchers must consider the physiological state of patients. Key variables include circadian rhythms and baseline inflammation levels. Lipoprotein(a) and mean corpuscular hemoglobin are also critical. These parameters significantly influence therapeu- tic outcomes. Looking forward, the successful clinical implementation of RIC depends on these core elements. First, researchers must establish standardized treatment protocols. These protocols must target specific clinical scenarios. Second, the medical community needs a reliable biomarker. This biomarker will confirm the therapeutic efficacy of RIC. Third, future studies should optimize combination therapy regimens. Finally, further mechanistic research on CRIC is necessary. This research will clarify its role in long term neurorestorative effects.

    The role of remote ischemic conditioning in ischemic stroke: neuroprotective mechanisms and future directions · 2026 · DOI

  • Tianrui Yu 1,2†, Yanghang Chen 1,2,3†, Yutao Lu 1,2, Fan Yu 4, Yuanyuan Xiang 2, Xinyue Kou 1,2, Hui Yang 1,2, Diyang Lyu 5, Moxin Wu 2, Xiaoping Yin 1,2, Zhiying Chen 1,2,6 and Manqing Zhang 6* 1Department of Neurology, Affiliated Hospital of Jiujiang University, Jiujiang, Jiangxi, China, 2Jiujiang Clinical Precision Medicine Research Center, Jiujiang, Jiangxi, China, 3Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China, 4College of Life Sciences, Nanchang University, Nanchang, Jiangxi, China, 5Department of Neurology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China, 6Jiangxi Provincial Key Laboratory of Cell Precision Therapy, School of Basic Medical Sciences, Jiujiang University, Jiujiang, Jiangxi, China Despite advances in vessel recanalization, ischemic stroke remains a leading cause of mortality, highlighting the need for comprehensive neuroprotective strategies such as remote ischemic conditioning (RIC). This review evaluates the multitargeted mechanisms of RIC, its progress in clinical translation, and the key factors determining its efficacy. In preclinical models, RIC exerts neuroprotection by modulating neuroinflammation, preserving the blood-brain barrier, and promoting angiogenesis and remyelination. Notably, it suppresses multiple programmed cell death pathways, including pyroptosis, apoptosis, ferroptosis, and disulfidptosis. However, analyses of recent high-quality clinical trials (e.g., SERIC- EVT, RESIST, and RICAMIS) reveal heterogeneous efficacy, indicating that clinical success is highly dependent on the specific execution protocol and successful cerebral reperfusion. Furthermore, critical patient-specific variables such as circadian rhythms, baseline systemic inflammation, and levels of both lipoprotein(a) and mean corpuscular hemoglobin (MCH) significantly influence therapeutic outcomes. Ultimately, while RIC is a highly translatable therapeutic strategy, its successful clinical application relies on the standardization of treatment protocols, the use of precision medicine to identify optimal responders, and its integration with existing therapies to maximize long-term stroke recovery.

    The role of remote ischemic conditioning in ischemic stroke: neuroprotective mechanisms and future directions · 2026 · DOI

  • The effects of quercetin on cardiac function and signaling pathways in aged animals are not well understood. Most experimental studies on cardioprotective strategies use young animals, limiting their translational potential.

    Chronic quercetin supplementation modulates cardiac function and signaling pathways in aged male Wistar rat hearts subjected to ischemia-reperfusion · 2026 · DOI

  • The complex response of myocardial ischemia injury remains enigmatic. There is a need for a comprehensive exploration and clarification of the precise mechanisms that contribute to the protective effects of drugs targeted at combating cardiovascular diseases.

    Cardioprotective mechanisms of Jiangfu Decoction against myocardial ischemia may involve regulation of the AMPK/PINK1/Parkin mitochondrial autophagy pathway. · 2026 · DOI

  • Intraoperative hypoxemia and postoperative pulmonary complications are common in pediatric patients undergoing thoracoscopic surgery. One-lung ventilation may predispose pediatric patients to lung injury. There is a need for effective strategies to improve intraoperative oxygenation and postoperative recovery in pediatric thoracic surgery.

    Hypoxic preconditioning improves intraoperative oxygenation and postoperative recovery in children undergoing thoracoscopic surgery: a randomized controlled trial · 2026 · DOI

  • Further studies are needed to confirm the efficacy and safety of HPC in pediatric thoracic surgery. Studies should investigate the long-term effects of HPC and RIPC in pediatric patients undergoing thoracic surgery. Research should focus on optimizing the protocol for HPC and RIPC in pediatric thoracic surgery.

    Hypoxic preconditioning improves intraoperative oxygenation and postoperative recovery in children undergoing thoracoscopic surgery: a randomized controlled trial · 2026 · DOI

  • The role of the RAAS in heart failure is not fully understood. The potential interactions of isoproterenol administration with the RAAS are not well studied.

    Protection against isoproterenol-induced cardiac injury by sacubitril/valsartan is associated with upregulation of the alternative renin-angiotensin-aldosterone system pathway · 2026 · DOI

  • Methodological heterogeneity across studies. The possible influence of placebo-related factors. The need for further research to fully understand the effects of ischemic preconditioning on exercise performance.

    EFFECTS OF ISCHEMIC PRECONDITIONING ON RESISTANCE EXERCISE PERFORMANCE: A SYSTEMATIC REVIEW · 2026 · DOI

  • The review identifies a gap in the understanding of the effects of ischemic preconditioning on resistance exercise performance. The study notes that prior work has suggested that ischemic preconditioning may have ergogenic effects, but the evidence is not yet conclusive. The review seeks to address this gap by synthesizing the evidence from 11 studies.

    EFFECTS OF ISCHEMIC PRECONDITIONING ON RESISTANCE EXERCISE PERFORMANCE: A SYSTEMATIC REVIEW · 2026 · DOI

  • Ischaemia-reperfusion injury (IRI) contributes to myocardial damage. The optimal timing and protocol for RIC are unknown. The effect of RIC on clinical outcomes in patients with STEMI is not fully understood.

    Remote Ischemic Conditioning as an Adjunct to Primary Percutaneous Coronary Intervention in ST-Elevation Myocardial Infarction: A Systematic Review and Meta-Analysis · 2026 · DOI

  • The overall impact of RIC on both functional and clinical outcomes remains uncertain. The effect of RIC on clinical outcomes in patients with STEMI is not fully understood.

    Remote Ischemic Conditioning as an Adjunct to Primary Percutaneous Coronary Intervention in ST-Elevation Myocardial Infarction: A Systematic Review and Meta-Analysis · 2026 · DOI

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75 open questions have been extracted from the limitations and future-work passages of 258 Cardiac Ischemia and Reperfusion papers in our 4.5M-paper local library. Each one below links back to the study that raised it, so you can read the original claim in context.

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