Aspirin treatment prevents inflammation in experimental bifurcation aneurysms in New Zealand White rabbits

Wanderer, Stefan; Grüter, Basil E.; Strange, Fabio; Boillat, Gwendoline; Sivanrupan, Sivani; Rey, Jeannine; Gunten, Michael von; Remonda, Luca; Widmer, Hans Rudolf; Casoni, Daniela; Andereggen, Lukas; Fandiño, Javier; Marbacher, Serge

doi:10.1136/neurintsurg-2020-017261

Cited by 6 publications

(12 citation statements)

References 26 publications

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“…Animal experiments have revealed a general vascular protective effect of the two drug groups ( 31 ). In rodent models with rabbit elastase aneurysms, ASA intake prevented inflammation of the periadventitial tissue and vessel wall ( 32 , 33 ). Comparable findings were obtained in humans, whereby ASA had the same beneficial influence on intracranial aneurysms, resulting in a lowered rupture risk ( 34 – 37 ).…”

Section: Discussionmentioning

confidence: 99%

Effects of medication intake on the risk of hemorrhage in patients with sporadic cerebral cavernous malformations

Chen

Lahl²,

Saban³

et al. 2023

Front. Neurol.

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ObjectiveRecurrent intracerebral hemorrhage (ICH) poses a high risk for patients with cerebral cavernous malformations (CCMs). This study aimed to assess the influence of medication intake on hemorrhage risk in sporadic CCMs.MethodsFrom a database of 1,409 consecutive patients with CCM (2003–2021), subjects with sporadic CCMs and complete magnetic resonance imaging data were included. We evaluated the presence of ICH as a mode of presentation, the occurrence of ICH during follow-up, and medication intake, including beta blockers, statins, antithrombotic therapy, and thyroid hormones. The impact of medication intake on ICH at presentation was calculated using univariate and multivariate logistic regression with age and sex adjustment. The longitudinal cumulative 5-year risk for (re-)hemorrhage was analyzed using the Kaplan–Meier curves and the Cox regression analysis.ResultsA total of 1116 patients with CCM were included. Logistic regression analysis showed a significant correlation (OR: 0.520, 95% CI: 0.284–0.951, p = 0.034) between antithrombotic therapy and ICH as a mode of presentation. Cox regression analysis revealed no significant correlation between medication intake and occurrence of (re-)hemorrhage (hazard ratios: betablockers 1.270 [95% CI: 0.703–2.293], statins 0.543 [95% CI: 0.194–1.526], antithrombotic therapy 0.507 [95% CI: 0.182–1.410], and thyroid hormones 0.834 [95% CI: 0.378–1.839]).ConclusionIn this observational study, antithrombotic treatment was associated with the tendency to a lower rate of ICH as a mode of presentation in a large cohort of patients with sporadic CCM. Intake of beta blockers, statins, and thyroid hormones had no effect on hemorrhage as a mode of presentation. During the 5-year follow-up period, none of the drugs affected the further risk of (re-)hemorrhage.

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Section: Discussionmentioning

confidence: 99%

Effects of medication intake on the risk of hemorrhage in patients with sporadic cerebral cavernous malformations

Chen

Lahl²,

Saban³

et al. 2023

Front. Neurol.

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“…In this context, after SAH the role of an upregulated inflammatory cerebral microenvironment in aneurysm formation and rupture is undisputed. [21][22][23] Here, LV might 23 Certainly, next to CI with DCVS, delayed ischemia and neurodegeneration, a multifactorial process is responsible for poor patient outcomes after SAH, including cortical spreading depressions, hydrocephalus, early brain injury, and impaired cerebral autoregulation. 1…”

Section: Discussionmentioning

confidence: 99%

“… 21–23 Here, LV might be an interesting pharmacological agent in analyzing effects on concentrations/amounts of prostaglandin E2 synthase-1, cyclooxygenase-2, and/or neutrophils in histological samples of the basilar artery or aneurysms walls with different wall characteristics in other animal models in future experiments. 23 …”

Section: Discussionmentioning

confidence: 99%

Levosimendan as a therapeutic strategy to prevent neuroinflammation after aneurysmal subarachnoid hemorrhage?

Wanderer

Andereggen

Mrosek

et al. 2021

J NeuroIntervent Surg

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BackgroundPoor patient outcomes after aneurysmal subarachnoid hemorrhage (SAH) occur due to a multifactorial process, mainly involving cerebral inflammation (CI), delayed cerebral vasospasm (DCVS), and delayed cerebral ischemia, followed by neurodegeneration. CI is mainly triggered by enhanced synthesis of serotonin (5-HT), prostaglandin F2alpha (PGF2a), and cytokines such as interleukins. Levosimendan (LV), a calcium-channel sensitizer, has already displayed anti-inflammatory effects in patients with severe heart failure. Therefore, we wanted to elucidate its potential anti-inflammatory role on the cerebral vasculature after SAH.MethodsExperimental SAH was induced by using an experimental double-hemorrhage model. Sprague Dawley rats were harvested on day 3 and day 5 after the ictus. The basilar artery was used for isometric investigations of the muscular media tone. Vessel segments were either preincubated with LV or without, with precontraction performed with 5-HT or PGF2a followed by application of acetylcholine (ACh) or LV.ResultsAfter preincubation with LV 10−4 M and 5-HT precontraction, ACh triggered a strong vasorelaxation in sham segments (LV 10−4 M, Emax 65%; LV 10−5 M, Emax 48%; no LV, Emax 53%). Interestingly, SAH D3 (LV 10−4, Emax 76%) and D5 (LV 10−4, Emax 79%) segments showed greater vasorelaxation compared with sham. An LV series after PGF2a precontraction showed significantly enhanced relaxation in the sham (P=0.004) and SAH groups (P=0.0008) compared with solvent control vessels.ConclusionsLV application after SAH seems to beneficially influence DCVS by antagonizing 5-HT- and PGF2a-triggered vasoconstriction. Considering this spasmolytic effect, LV might have a role in the treatment of SAH, additionally in selected patients suffering takotsubo cardiomyopathy.

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“…[ 182 ] 2021 X Surgical Rabbits Saccular X X Zhang Y. [ 183 ] 2021 X Surgical Rabbits Saccular X X Fries F. [ 184 ] 2022 X Surgical Rabbits Saccular X Hufnagl C. [ 185 ] 2022 X Surgical Rabbits Saccular X Wanderer S. [ 186 ] 2022 X Surgical Rabbits Saccular X …”

Section: Methodsmentioning

confidence: 99%

Imaging of intracranial aneurysms in animals: a systematic review of modalities

et al. 2023

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Intracranial aneurysm (IA) animal models are paramount to study IA pathophysiology and to test new endovascular treatments. A number of in vivo imaging modalities are available to characterize IAs at different stages of development in these animal models. This review describes existing in vivo imaging techniques used so far to visualize IAs in animal models. We systematically searched for studies containing in vivo imaging of induced IAs in animal models in PubMed and SPIE Digital library databases between 1 January 1945 and 13 July 2022. A total of 170 studies were retrieved and reviewed in detail, and information on the IA animal model, the objective of the study, and the imaging modality used was collected. A variety of methods to surgically construct or endogenously induce IAs in animals were identified, and 88% of the reviewed studies used surgical methods. The large majority of IA imaging in animals was performed for 4 reasons: basic research for IA models, testing of new IA treatment modalities, research on IA in vivo imaging of IAs, and research on IA pathophysiology. Six different imaging techniques were identified: conventional catheter angiography, computed tomography angiography, magnetic resonance angiography, hemodynamic imaging, optical coherence tomography, and fluorescence imaging. This review presents and discusses the advantages and disadvantages of all in vivo IA imaging techniques used in animal models to help future IA studies finding the most appropriate IA imaging modality and animal model to answer their research question.

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Aspirin treatment prevents inflammation in experimental bifurcation aneurysms in New Zealand White rabbits

Cited by 6 publications

References 26 publications

Effects of medication intake on the risk of hemorrhage in patients with sporadic cerebral cavernous malformations

Effects of medication intake on the risk of hemorrhage in patients with sporadic cerebral cavernous malformations

Levosimendan as a therapeutic strategy to prevent neuroinflammation after aneurysmal subarachnoid hemorrhage?

Imaging of intracranial aneurysms in animals: a systematic review of modalities

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