Journal of Cerebral Blood Flow and Metabolism最新文献

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Aeromedical evacuation-relevant hypobaria following traumatic brain injury in rats contributes to cerebral blood flow depression, altered neurochemistry and increased neuroinflammation. 大鼠外伤性脑损伤后航空医疗后送相关的低压导致脑血流抑制、神经化学改变和神经炎症增加。
IF 4.9 2区 医学
Journal of Cerebral Blood Flow and Metabolism Pub Date : 2025-05-01 Epub Date: 2024-12-18 DOI: 10.1177/0271678X241299985
Julie L Proctor, Su Xu, Sijia Guo, Boris Piskoun, Catriona Miller, Steven Roys, Rao P Gullapalli, Gary Fiskum
{"title":"Aeromedical evacuation-relevant hypobaria following traumatic brain injury in rats contributes to cerebral blood flow depression, altered neurochemistry and increased neuroinflammation.","authors":"Julie L Proctor, Su Xu, Sijia Guo, Boris Piskoun, Catriona Miller, Steven Roys, Rao P Gullapalli, Gary Fiskum","doi":"10.1177/0271678X241299985","DOIUrl":"10.1177/0271678X241299985","url":null,"abstract":"<p><p>Aircraft cabins are routinely pressurized to the equivalent of 8000 ft altitude. Exposure of lab animals to aeromedical evacuation relevant hypobaria after traumatic brain injury worsens neurological outcomes, which is paradoxically exacerbated by hyperoxia. This study tested the hypothesis that exposure of rats to hypobaria following cortical impact reduces cerebral blood flow, increases neuroinflammation, and alters brain neurochemistry. Rats were exposed to simulated ground (normobaric) or air (hypobaric 8000 ft) transport, under normoxia or hyperoxia, 24 hr after trauma. Hypobaria exposure resulted in lower cerebral blood flow to the contralateral cortex and bilateral thalamus during flight and increased delayed cortical inflammation (ED1 immunoreactivity) at 14 days post injury. Impacted rats exposed to hypobaria had higher cortical creatine levels compared rats maintained at sea level. Exposure to the combination of hyperoxia and hypobaria resulted in the greatest reduction in cortical blood flow and total creatine during flight which persisted up to two weeks. In conclusion, hypoperfusion during hypobaria exposure could contribute to worsening of neuroinflammation and neurochemical imbalances. The presence of excessive O<sub>2</sub> during hypobaria results in long-term suppression of cerebral blood flow, indicating that supplemental O<sub>2</sub> should be titrated during hypobaria to maintain normoxia.</p>","PeriodicalId":15325,"journal":{"name":"Journal of Cerebral Blood Flow and Metabolism","volume":" ","pages":"945-959"},"PeriodicalIF":4.9,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11656461/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142854460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reduced neurovascular coupling is associated with increased cardiovascular risk without established cerebrovascular disease: A cross-sectional analysis in UK Biobank. 神经-血管耦合功能降低与心血管风险增加有关,但未确诊脑血管疾病:英国生物库横断面分析。
IF 4.9 2区 医学
Journal of Cerebral Blood Flow and Metabolism Pub Date : 2025-05-01 Epub Date: 2024-11-22 DOI: 10.1177/0271678X241302172
Sheng Yang, Alastair John Stewart Webb
{"title":"Reduced neurovascular coupling is associated with increased cardiovascular risk without established cerebrovascular disease: A cross-sectional analysis in UK Biobank.","authors":"Sheng Yang, Alastair John Stewart Webb","doi":"10.1177/0271678X241302172","DOIUrl":"10.1177/0271678X241302172","url":null,"abstract":"<p><p>Mid-life vascular risk factors predict late-life cerebrovascular diseases and poor global brain health. Although endothelial dysfunction is hypothesized to contribute to this process, evidence of impaired neurovascular function in early stages remains limited. In this cross-sectional study of 31,934 middle-aged individuals from UK Biobank without established cerebrovascular disease, the overall 10-year risk of cardiovascular events was associated with reduced neurovascular coupling (p < 2 × 10<sup>-16</sup>) during a visual task with functional MRI, including in participants with no clinically apparent brain injury on MRI. Diabetes, smoking, waist-hip ratio, and hypertension were each strongly associated with decreased neurovascular coupling with the strongest relationships for diabetes and smoking, whilst in older adults there was an inverted U-shaped relationship with DBP, peaking at 70-80 mmHg DBP. These findings indicate that mid-life vascular risk factors are associated with impaired cerebral endothelial-dependent neurovascular function in the absence of overt brain injury. Neurovascular dysfunction, measured by neurovascular coupling, may play a role in the development of late-life cerebrovascular disease, underscoring the need for further longitudinal studies to explore its potential as a mediator of long-term cerebrovascular risk.</p>","PeriodicalId":15325,"journal":{"name":"Journal of Cerebral Blood Flow and Metabolism","volume":" ","pages":"897-907"},"PeriodicalIF":4.9,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11585009/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142692305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Longitudinal changes in white matter free water in cerebral small vessel disease: Relationship to cerebral blood flow and white matter fiber alterations. 脑小血管疾病中白质游离水的纵向变化:与脑血流和白质纤维改变的关系
IF 4.9 2区 医学
Journal of Cerebral Blood Flow and Metabolism Pub Date : 2025-05-01 Epub Date: 2024-12-09 DOI: 10.1177/0271678X241305480
Miao Lin, Shuyue Wang, Hui Hong, Yao Zhang, Linyun Xie, Lei Cui, Lingyun Liu, Yeerfan Jiaerken, Xinfeng Yu, Minming Zhang, Alberto De Luca, Ruiting Zhang, Peiyu Huang
{"title":"Longitudinal changes in white matter free water in cerebral small vessel disease: Relationship to cerebral blood flow and white matter fiber alterations.","authors":"Miao Lin, Shuyue Wang, Hui Hong, Yao Zhang, Linyun Xie, Lei Cui, Lingyun Liu, Yeerfan Jiaerken, Xinfeng Yu, Minming Zhang, Alberto De Luca, Ruiting Zhang, Peiyu Huang","doi":"10.1177/0271678X241305480","DOIUrl":"10.1177/0271678X241305480","url":null,"abstract":"<p><p>White matter (WM) free water (FW) is a potential imaging marker for cerebral small vessel disease (CSVD). This study aimed to characterize longitudinal changes in WM FW and investigate factors contributing to its elevation in CSVD. We included 80 CSVD patients and 40 normal controls (NCs) with multi-modality MRI data. Cerebral blood flow (CBF) was measured, and fiber alterations were assessed using total apparent fiber density (AFD<sub>t</sub>). FW were extracted from whole WM, white matter hyperintensities (WMH) and normal-appearing WM (NAWM). Baseline and longitudinal FW elevation were compared between patients and NCs, and between WMH and NAWM. We investigated whether baseline vascular risk factor score, CBF, and AFD<sub>t</sub> could predict longitudinal FW elevation. Association between cognition and WM FW in CSVD was also assessed. Results shown that FW was higher and increased faster in CSVD compared to NCs and in WMH compared to NAWM. Baseline AFD<sub>t</sub> predicted longitudinal FW elevation in CSVD patients, while CBF predicted FW changes only in controls. WM FW was associated with cognitive impairment. These findings suggest that CSVD is associated with a faster increase in WM FW. Hypoperfusion and WM fiber alterations might accelerate FW elevation, which is associated with cognitive decline.</p>","PeriodicalId":15325,"journal":{"name":"Journal of Cerebral Blood Flow and Metabolism","volume":" ","pages":"932-944"},"PeriodicalIF":4.9,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11629364/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142800249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advances in sporadic brain arteriovenous malformations: Novel genetic insights, innovative animal models and emerging therapeutic approaches. 散发性脑动静脉畸形的进展:新的遗传见解,创新的动物模型和新兴的治疗方法。
IF 4.9 2区 医学
Journal of Cerebral Blood Flow and Metabolism Pub Date : 2025-05-01 Epub Date: 2025-02-13 DOI: 10.1177/0271678X251319913
Yasuhito Ueki, Ryan M Naylor, Sherief A Ghozy, Kasthuri Thirupathi, Lorenzo Rinaldo, David F Kallmes, Ramanathan Kadirvel
{"title":"Advances in sporadic brain arteriovenous malformations: Novel genetic insights, innovative animal models and emerging therapeutic approaches.","authors":"Yasuhito Ueki, Ryan M Naylor, Sherief A Ghozy, Kasthuri Thirupathi, Lorenzo Rinaldo, David F Kallmes, Ramanathan Kadirvel","doi":"10.1177/0271678X251319913","DOIUrl":"10.1177/0271678X251319913","url":null,"abstract":"<p><p>Brain arteriovenous malformations (bAVMs) are a notable cause of intracranial hemorrhage, strongly associated with severe morbidity and mortality. Contemporary treatment options include surgery, stereotactic radiosurgery, and endovascular embolization, each of which has limitations. Hence, development of pharmacological interventions is urgently needed. The recent discovery of the presence of activating Kirsten rat sarcoma (<i>KRAS</i>) viral oncogene homologue mutations in most sporadic bAVMs has opened the door for a more comprehensive understanding of the pathogenesis of bAVMs and has pointed to entirely novel possible therapeutic targets. Herein, we review the status quo of genetics, animal models, and therapeutic approaches in bAVMs.</p>","PeriodicalId":15325,"journal":{"name":"Journal of Cerebral Blood Flow and Metabolism","volume":" ","pages":"793-799"},"PeriodicalIF":4.9,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11826813/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143414291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cerebral microvascular physiology associated with white matter lesion burden differs by level of vascular risk in typically aging older adults. 与白质病变负担相关的脑微血管生理学因典型老龄化老年人的血管风险水平而异。
IF 4.9 2区 医学
Journal of Cerebral Blood Flow and Metabolism Pub Date : 2025-05-01 Epub Date: 2024-11-20 DOI: 10.1177/0271678X241300394
Gabriele M Gassner, Nikou L Damestani, Natalie S Wheeler, Jan A Kufer, Shrikanth M Yadav, Sarah F Mellen, Katherine N Maina, David H Salat, Meher R Juttukonda
{"title":"Cerebral microvascular physiology associated with white matter lesion burden differs by level of vascular risk in typically aging older adults.","authors":"Gabriele M Gassner, Nikou L Damestani, Natalie S Wheeler, Jan A Kufer, Shrikanth M Yadav, Sarah F Mellen, Katherine N Maina, David H Salat, Meher R Juttukonda","doi":"10.1177/0271678X241300394","DOIUrl":"10.1177/0271678X241300394","url":null,"abstract":"<p><p>White matter lesions (WMLs) are prevalent with aging, and higher WML burden has been observed in older adults with vascular diseases. While the physiology underlying the formation of WMLs is not known, various risk factors are associated with high WML burden. Here, we investigated the relationship between vascular risk factors and microvascular physiology (i.e., oxygen supply and oxygen extraction fraction [OEF]) and their association with WML burden. Forty-one typically aging adults (60-80 years) were classified into high or low vascular risk based on common modifiable vascular risk factors (hypertension, diabetes, hyperlipidemia, and overweight). These groups were subdivided into high or low WML burden. Differences in microvascular physiology (oxygen supply and OEF) were then compared between and within groups. Overall, OEF was significantly higher in the high vascular risk group compared to the low vascular risk group (p < 0.01). In the low vascular risk subgroup, OEF was uniquely lower in the individuals with high WML versus low WML burden (p = 0.02), despite no differences in oxygen supply between these subgroups (p = 0.87). The coupling of impaired OEF with the absence of compensatory physiology, such as elevated oxygen supply, may represent an important mechanism underlying WML burden in individuals with low vascular risk factors.</p>","PeriodicalId":15325,"journal":{"name":"Journal of Cerebral Blood Flow and Metabolism","volume":" ","pages":"885-896"},"PeriodicalIF":4.9,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11580122/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142681944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Targeting Na,K-ATPase-Src signaling to normalize cerebral blood flow in a murine model of familial hemiplegic migraine. 在家族性偏瘫性偏头痛小鼠模型中,靶向Na,K-ATPase-Src信号使脑血流正常化。
IF 4.9 2区 医学
Journal of Cerebral Blood Flow and Metabolism Pub Date : 2025-05-01 Epub Date: 2024-12-04 DOI: 10.1177/0271678X241305562
Christian Staehr, Halvor Østerby Guldbrandsen, Casper Homilius, Laura Øllegaard Johnsen, Dmitry Postnov, Tina M Pedersen, Sandrine Pierre, Shaun L Sandow, Vladimir V Matchkov
{"title":"Targeting Na,K-ATPase-Src signaling to normalize cerebral blood flow in a murine model of familial hemiplegic migraine.","authors":"Christian Staehr, Halvor Østerby Guldbrandsen, Casper Homilius, Laura Øllegaard Johnsen, Dmitry Postnov, Tina M Pedersen, Sandrine Pierre, Shaun L Sandow, Vladimir V Matchkov","doi":"10.1177/0271678X241305562","DOIUrl":"10.1177/0271678X241305562","url":null,"abstract":"<p><p>Familial hemiplegic migraine type 2 (FHM2) is linked to Na,K-ATPase α<sub>2</sub> isoform mutations, including that of G301R. Mice heterozygous for this mutation (<math><mrow><msubsup><mrow><mo>α</mo></mrow><mn>2</mn><mrow><mo>+</mo><mo>/</mo><mtext>G3</mtext><mn>0</mn><mtext>1R</mtext></mrow></msubsup></mrow></math>) show cerebrovascular hypercontractility associated with amplified Src kinase signaling, and exaggerated neurovascular coupling. This study hypothesized that targeting Na,K-ATPase-dependent Src phosphorylation with pNaKtide would normalize cerebral perfusion and neurovascular coupling in <math><mrow><msubsup><mrow><mo>α</mo></mrow><mn>2</mn><mrow><mo>+</mo><mo>/</mo><mtext>G3</mtext><mn>0</mn><mtext>1R</mtext></mrow></msubsup></mrow></math> mice. The effect of pNaKtide on cerebral blood flow and neurovascular coupling was assessed using laser speckle contrast imaging in awake, head-fixed mice with cranial windows in a longitudinal study design. At baseline, compared to wild type, <math><mrow><msubsup><mrow><mo>α</mo></mrow><mn>2</mn><mrow><mo>+</mo><mo>/</mo><mtext>G3</mtext><mn>0</mn><mtext>1R</mtext></mrow></msubsup></mrow></math> mice exhibited increased middle cerebral artery tone; with whisker stimulation leading to an exaggerated increase in sensory cortex blood flow. No difference between genotypes in telemetrically assessed blood pressure occurred. The exaggerated neurovascular coupling in <math><mrow><msubsup><mrow><mo>α</mo></mrow><mn>2</mn><mrow><mo>+</mo><mo>/</mo><mtext>G3</mtext><mn>0</mn><mtext>1R</mtext></mrow></msubsup></mrow></math> mice was associated with increased K<sub>ir</sub>2.1 channel expression in cerebrovascular endothelium. Two weeks pNaKtide treatment normalized cerebral artery tone, endothelial K<sub>ir</sub>2.1 expression, and neurovascular coupling in <math><mrow><msubsup><mrow><mo>α</mo></mrow><mn>2</mn><mrow><mo>+</mo><mo>/</mo><mtext>G3</mtext><mn>0</mn><mtext>1R</mtext></mrow></msubsup></mrow></math> mice. Inhibition of the Na,K-ATPase-dependent Src kinase signaling with pNaKtide prevented excessive vasoconstriction and disturbances in neurovascular coupling in <math><mrow><msubsup><mrow><mo>α</mo></mrow><mn>2</mn><mrow><mo>+</mo><mo>/</mo><mtext>G3</mtext><mn>0</mn><mtext>1R</mtext></mrow></msubsup></mrow></math> mice. pNaKtide had only minor hypotensive effect similar in both genotypes. These results demonstrate a novel treatment target to normalize cerebral perfusion in FHM2.</p>","PeriodicalId":15325,"journal":{"name":"Journal of Cerebral Blood Flow and Metabolism","volume":" ","pages":"842-854"},"PeriodicalIF":4.9,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11615910/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142769339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chronic hypertension and perfusion deficits conjointly affect disease outcome after tPA treatment in a rodent model of thromboembolic stroke. 慢性高血压和灌注缺陷共同影响tPA治疗后血栓栓塞性中风啮齿动物模型的疾病结局。
IF 4.9 2区 医学
Journal of Cerebral Blood Flow and Metabolism Pub Date : 2025-05-01 Epub Date: 2025-01-22 DOI: 10.1177/0271678X241310732
Bart Aa Franx, Ivo Acw Tiebosch, Annette van der Toorn, Rick M Dijkhuizen
{"title":"Chronic hypertension and perfusion deficits conjointly affect disease outcome after tPA treatment in a rodent model of thromboembolic stroke.","authors":"Bart Aa Franx, Ivo Acw Tiebosch, Annette van der Toorn, Rick M Dijkhuizen","doi":"10.1177/0271678X241310732","DOIUrl":"10.1177/0271678X241310732","url":null,"abstract":"<p><p>Futile recanalization hampers prognoses for ischemic stroke patients despite successful recanalization therapy. Allegedly, hypertension and reperfusion deficits contribute, but a better understanding is needed of how they interact and mediate disease outcome. We reassessed data from spontaneously hypertensive and normotensive Wistar-Kyoto rats (male, n = 6-7/group) that were subjected to two-hour embolic middle cerebral artery occlusion and thrombolysis in preclinical trials. Serial MRI allowed lesion monitoring and parcellation of regions-of-interest that represented infarcted (core) or recovered (perilesional) tissue. Imaging markers of hemodynamics and blood-brain barrier (BBB) status were related to tissue fate and neurological outcome. Despite comparable ischemic severity during occlusion between groups, hypertensive rats temporarily developed larger lesions after recanalization, with permanently aggravated vasogenic edema and BBB permeability. One day post-stroke, cerebral blood flow (CBF) was variably restored, but blood transit times were consistently prolonged in hypertensives. Compared to the core, perilesional CBF was normo-to-hyperperfused in both groups, yet this pattern reversed after seven days. Volumes of hypo- and hyperperfusion developed irrespective of strain, differentially associating with final infarct volume and behavioral outcome. Incomplete reperfusion and cerebral injury after thrombolysis were augmented in hypertensive rats. One day after thrombolysis, fractional volumes of hypoperfusion associated with worsened outcomes, while fractional volumes of hyperperfusion appeared beneficial or benign.</p>","PeriodicalId":15325,"journal":{"name":"Journal of Cerebral Blood Flow and Metabolism","volume":" ","pages":"831-841"},"PeriodicalIF":4.9,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11755427/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143023554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In vivo assessment of the influence of general anesthetics on transmembrane water cycling in the brain. 全身麻醉对脑内跨膜水循环影响的体内评价。
IF 4.9 2区 医学
Journal of Cerebral Blood Flow and Metabolism Pub Date : 2025-05-01 Epub Date: 2024-12-24 DOI: 10.1177/0271678X241309783
Eleonora Cavallari, Elena Lorenzi, Enza Di Gregorio, Giuseppe Ferrauto, Silvio Aime, Giorgio Vallortigara, Angelo Bifone
{"title":"In vivo assessment of the influence of general anesthetics on transmembrane water cycling in the brain.","authors":"Eleonora Cavallari, Elena Lorenzi, Enza Di Gregorio, Giuseppe Ferrauto, Silvio Aime, Giorgio Vallortigara, Angelo Bifone","doi":"10.1177/0271678X241309783","DOIUrl":"10.1177/0271678X241309783","url":null,"abstract":"<p><p>This study presents the first in vivo measurement of transcytolemmal water exchange in the brain using a novel Magnetic Resonance technique. We extend previous applications of Chemical Exchange Saturation Transfer (CEST) to examine water exchange across cellular membranes in late-stage chicken embryo brains. The immature blood-brain barrier at this stage allows Gadolinium-Based Contrast Agents (GBCAs) to penetrate the brain's interstitial space, sensitizing the CEST effect to water exchange between intra- and extracellular environments. Exchange rates were measured in the awake brain and under different anaesthetic regimens, including isoflurane and ketamine/xylazine. Results show that brain water exchange is dominated by activity-dependent mechanisms, with anaesthesia reducing exchange rates by over an order of magnitude. These findings suggest that anaesthetics may impact neuronal and glial function by interfering with active transport mechanisms, potentially altering brain water homeostasis. This study highlights the utility of CEST MRI for studying dynamic biological processes in vivo.</p>","PeriodicalId":15325,"journal":{"name":"Journal of Cerebral Blood Flow and Metabolism","volume":" ","pages":"977-988"},"PeriodicalIF":4.9,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11669147/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142885358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reliable infarction of the middle cerebral artery territory in C57BL/6 mice using pterygopalatine artery ligation and filament optimization - The PURE-MCAo model. 利用翼腭动脉结扎和细丝优化技术对 C57BL/6 小鼠大脑中动脉区域进行可靠的梗塞治疗--PURE-MCAo 模型。
IF 4.9 2区 医学
Journal of Cerebral Blood Flow and Metabolism Pub Date : 2025-05-01 Epub Date: 2024-10-07 DOI: 10.1177/0271678X241281841
Sodai Yoshimura, Maximilian Dorok, Uta Mamrak, Antonia Wehn, Eva Krestel, Igor Khalin, Nikolaus Plesnila
{"title":"Reliable infarction of the middle cerebral artery territory in C57BL/6 mice using pterygopalatine artery ligation and filament optimization - The PURE-MCAo model.","authors":"Sodai Yoshimura, Maximilian Dorok, Uta Mamrak, Antonia Wehn, Eva Krestel, Igor Khalin, Nikolaus Plesnila","doi":"10.1177/0271678X241281841","DOIUrl":"10.1177/0271678X241281841","url":null,"abstract":"<p><p>Current techniques for inducing intraluminal filamentous middle cerebral artery occlusion (fMCAo) in mice produce highly variable results and often cause additional infarcts in the posterior cerebral artery (PCA) territory. The aim of the current study was to develop a novel procedure to overcome these shortcomings. Male C57BL/6 mice were subjected to 60 min of fMCAo with cerebral blood flow monitored by laser Doppler flowmetry. The influence of the length of the occlusion filament coating and the combination of common carotid artery (CCA) or pterygopalatine artery (PPA) ligation on lesion volume and functional outcome 24 h after reperfusion was evaluated. The use of appropriate filament and PPA ligation while maintaining CCA perfusion prevented the development of infarcts in the PCA area, resulted in pure MCA infarcts (68.3 ± 14.5 mm<sup>3</sup>) and reduced the variability of infarct volumes by more than half (from 26-38% to 14% standard deviation/mean). Using an improved fMCAo procedure, we were able to produce <u>P</u>CA area-<u>u</u>naffected <u>re</u>producible (PURE) infarcts exclusively in the MCA territory. Thus PURE-MCAo reduced outcome variability by more than 50%. Our results may thus help to reduce the number of animals in preclinical stroke research and to increase the reproducibility of the fMCAo model.</p>","PeriodicalId":15325,"journal":{"name":"Journal of Cerebral Blood Flow and Metabolism","volume":" ","pages":"871-884"},"PeriodicalIF":4.9,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11563556/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142380953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evidence of cortical vascular impairments in early stage of Alzheimer's transgenic mice: Optical imaging. 阿尔茨海默病转基因小鼠早期皮层血管损伤的证据:光学成像。
IF 4.9 2区 医学
Journal of Cerebral Blood Flow and Metabolism Pub Date : 2025-05-01 Epub Date: 2024-12-18 DOI: 10.1177/0271678X241304893
Hyomin Jeong, Yingtian Pan, Firoz Akhter, Nora D Volkow, Donghui Zhu, Congwu Du
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