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15 November 2019 : Clinical Research  

Early Renal-Protective Effects of Remote Ischemic Preconditioning in Elderly Patients with Non-ST-Elevation Myocardial Infarction (NSTEMI)

Suzhen Guo1BCDEF, Lian Jian1CDE, Degang Cheng1CD, Li Pan1DE, Shaoying Liu1E, Chengzhi Lu1AEFG*

DOI: 10.12659/MSM.917442

Med Sci Monit 2019; 25:8602-8609


BACKGROUND: With the wide clinical application of angiography, contrast-enhanced nephropathy (CIN) has become the third-leading cause of acute kidney injury (AKI). Remote ischemic preconditioning (RIPC) is a non-fatal ischemia-reperfusion injury that can provide protection against lethal ischemia-reperfusion. This study aimed to assess the effect of RIPC on CIN in elderly patients with non-ST-elevation myocardial infarction (NSTEMI).

MATERIAL AND METHODS: Patients were randomly divided into 2 groups with 119 patients in each group treated with interventional therapy. Patients in the RIPC group received distal ischemic preconditioning 2 h before contrast exposure, while patients in the control group received a sham RIPC procedure. Incidence of CIN was the primary outcome. Changes in creatinine, NGAL, and KIM-1 after contrast administration were secondary outcomes.

RESULTS: CIN occurred in a total of 27 (12.3%) patients, including 12 (10.1%) in the RIPC group and 15 (15.1%) in the control group (P=0.329). RIPC treatment significantly reduced the levels of NGAL (P=0.024) and KIM-1 (P=0.007) at 12 h after contrast administration, suggesting RIPC treatment reduces sub-clinical renal damage. Subgroup analysis revealed that significant reduction of KIM-1 and NGAL by RIPC, mainly occurring in patients with a Mehran risk score of 6–10.

CONCLUSIONS: Although RIPC did not significantly reduce CIN incidence in elderly patients with NSTEMI, the application of more sensitive biomarkers – NGAL and KIM-1 – indicated a reduction of sub-clinical renal damage by RIPC, especially in the early stage of injury. As a simple and well-tolerated method, RIPC may be a potentially feasible option to prevent CIN.

Keywords: Acute Kidney Injury, Biomarkers, Pharmacological, Creatinine, Myocardial Infarction, Aged, biomarkers, Contrast Media, Incidence, Ischemic Preconditioning, Kidney, Non-ST Elevated Myocardial Infarction, percutaneous coronary intervention, Reperfusion Injury

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01 November 2023 : Editorial  

Editorial: Factors Driving New Variants of SARS-CoV-2, Immune Escape, and Resistance to Antiviral Treatments as the End of the COVID-19 Pandemic is Declared

Dinah V. Parums
Science Editor, Medical Science Monitor, International Scientific Information, Inc., Melville,

DOI: 10.12659/MSM.942960

Med Sci Monit 2023; 29:e942960


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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750