Evidence mapPaperPMID 41649613Full record

ArticleNeuromolecular medicine2026

Simvastatin Ameliorates Lipid Metabolism-Mediated Endothelial Inflammation and Tight Junction Impairment in Chronic Cerebral Hypoperfusion.

Ruihua Sun, Wanyue Li, Xiaoyi Ji, Wenjian Hu, Ying Zhao, Yaru Lu, Junkui Shang, Xiaodi Hao, Jiewen Zhang

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Article in Neuromolecular medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Ruihua Sun *Department of Neurology, Henan Provincial People's Hospital & Zhengzhou University People's Hospital, Zhengzhou, 450003, Henan, China.
Wanyue Li *Department of Radiology, Henan Provincial People's Hospital & People's Hospital of Zhengzhou University, Zhengzhou, China.
Xiaoyi Ji *Department of Neurology, Henan Provincial People's Hospital & Zhengzhou University People's Hospital, Zhengzhou, 450003, Henan, China.
Wenjian HuDepartment of Neurology, Baoshan District Hospital of Integrated Traditional Chinese and Western Medicine of Shanghai, Shanghai University of Traditional Chinese Medicine, 181 Youyi Road, Shanghai, 201900, China.
Ying ZhaoDepartment of Neurology, Henan Provincial People's Hospital & Zhengzhou University People's Hospital, Zhengzhou, 450003, Henan, China.
Yaru LuDepartment of Neurology, Henan Provincial People's Hospital & Zhengzhou University People's Hospital, Zhengzhou, 450003, Henan, China.
Junkui ShangDepartment of Neurology, Henan Provincial People's Hospital & Zhengzhou University People's Hospital, Zhengzhou, 450003, Henan, China. shangjunkui@yeah.net.
Xiaodi HaoDepartment of Neurology, Henan Provincial People's Hospital & Zhengzhou University People's Hospital, Zhengzhou, 450003, Henan, China. whu_haoxd@126.com.
Jiewen ZhangDepartment of Neurology, Henan Provincial People's Hospital & Zhengzhou University People's Hospital, Zhengzhou, 450003, Henan, China. zhangjiewen9900@126.com.

Funding

the Henan Provincial Key Research and Development Special Program 241111313500the Henan Provincial Major Project of Medical Science and Technology Key Research Program under Provincial-Ministerial Co-Construction SBGJ202401002the National Natural Science Foundation of China 82171196
6 · The paper itself

Abstract

Chronic cerebral hypoperfusion (CCH) is a key pathological hallmark observable in multiple subtypes of cerebral small vessel disease (CSVD). This condition causes both structural and functional changes within the brain's vascular system, and is particularly damaging to brain microvascular endothelial cells (BMECs). The exact molecular mechanisms underlying BMEC impairment in CCH remain insufficiently defined despite their clinical importance. Emerging evidence indicates that disturbances in intracellular lipid metabolism might contribute substantially to promoting endothelial inflammation and functional deficits. This study aims to investigate whether aberrant lipid metabolism contributes to endothelial inflammation and tight junction (TJ) dysfunction in BMECs under the condition of CCH, and to assess the therapeutic potential of intervention with simvastatin. A rat model of chronic CSVD was created via permanent bilateral ligation of the common carotid arteries (2VO) in animal subjects. Samples of cortical microvasculature were collected at predefined intervals for transcriptome profiling. Assessments of lipid metabolism, inflammation-related factors, and TJ protein levels were conducted in both in vivo and after induction of hypoxia and administration of simvastatin. At 14d post-2VO, mRNA expression of TJ proteins including occludin (Ocln), claudin-5 (Cldn5), and zonula occludens-1 (Zo-1) was significantly downregulated in BMECs compared to sham controls. Simultaneously, there was a notable buildup of lipid droplets, rise in cholesterol levels, and upregulation of pro-inflammatory indicators including VCAM1, TNF-α, and ICAM1. Simvastatin administration effectively reduced lipid buildup, suppressed inflammation, and restored TJ integrity. Dysregulated lipid metabolism and heightened inflammatory responses contribute to TJ disruption in BMECs with CCH. Simvastatin therapy mitigates lipid accumulation, dampens inflammation, and improves TJ function in BMECs with CCH.

Indexed as

Brain IschemiaEndothelial CellsHydroxymethylglutaryl-CoA Reductase InhibitorsLipid MetabolismSimvastatinTight JunctionsAnimalsChronic DiseaseClaudin-5Endothelium, VascularMaleMicrovesselsOccludinRatsRats, Sprague-DawleyRNA, MessengerClaudin-5Cldn5 protein, ratHydroxymethylglutaryl-CoA Reductase InhibitorsOccludinOcln protein, ratRNA, MessengerSimvastatinTight Junction ProteinsZonula Occludens-1 ProteinChronic cerebral hypoperfusionInflammationLipidSimvastatinTight junction

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.