New Pathophysiological Considerations on Cerebral Aneurysms

Jung, Keun‐Hwa

doi:10.5469/neuroint.2018.01011

Cited by 53 publications

(43 citation statements)

References 71 publications

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“…41 It is known that hemodynamic, geometrical, and metabolic factors that result in aneurysm growth are also triggers of aneurysm rupture. 23,34 Consequently, aneurysm growth as a clinical surrogate for rupture may serve as an indicator of treatment.…”

Section: Discussionmentioning

confidence: 99%

Aspirin associated with decreased rate of intracranial aneurysm growth

Zanaty¹,

Roa²,

Nakagawa

et al. 2020

Journal of Neurosurgery

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OBJECTIVEAspirin has emerged as a potential agent in the prevention of rupture of intracranial aneurysms (IAs). In this study, the authors’ goal was to test if aspirin is protective against aneurysm growth in patients harboring multiple IAs ≤ 5 mm.METHODSThe authors performed a retrospective review of a prospectively maintained database covering the period July 2009 through January 2019. Patients’ data were included if the following criteria were met: 1) the patient harbored multiple IAs; 2) designated primary aneurysms were treated by surgical/endovascular means; 3) the remaining aneurysms were observed for growth; and 4) a follow-up period of at least 5 years after the initial treatment was available. Demographics, earlier medical history, the rupture status of designated primary aneurysms, aneurysms’ angiographic features, and treatment modalities were gathered.RESULTSThe authors identified 146 patients harboring a total of 375 IAs. At the initial encounter, 146 aneurysms were treated and the remaining 229 aneurysms (2–5 mm) were observed. During the follow-up period, 24 (10.48%) of 229 aneurysms grew. All aneurysms observed to grow later underwent treatment. None of the observed aneurysms ruptured. Multivariate analysis showed that aspirin was significantly associated with a decreased rate of growth (odds ratio [OR] 0.19, 95% confidence interval [CI] 0.05–0.63). Variables associated with an increased rate of growth included hypertension (OR 14.38, 95% CI 3.83–53.94), drug abuse (OR 11.26, 95% CI 1.21–104.65), history of polycystic kidney disease (OR 9.48, 95% CI 1.51–59.35), and subarachnoid hemorrhage at presentation (OR 5.91, 95% CI 1.83–19.09).CONCLUSIONSIn patients with multiple IAs, aspirin significantly decreased the rate of aneurysm growth over time. Additional prospective interventional studies are needed to validate these findings.

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Section: Discussionmentioning

confidence: 99%

Aspirin associated with decreased rate of intracranial aneurysm growth

Zanaty¹,

Roa²,

Nakagawa

et al. 2020

Journal of Neurosurgery

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“…Although it remains to be established, the precise pathogenesis of cerebral aneurysm formation, growth and rupture, extracellular matrix (ECM) defects and degeneration, hemodynamic stress, and inflammatory responses are suggested as key components resulting in structural fragility within the arterial wall. [ 13 ]…”

Section: Discussionmentioning

confidence: 99%

Association of bone mineral density, Vitamin D, and serum calcium in intracranial aneurysm

Sharma

2020

Asian J Neurosurg

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Aims: The objective of this study is to understand the association between bone mineral density (BMD), serum calcium, and Vitamin D in s (IA) patients. Subjects and Methods: A total of 100 patients with IA diagnosed at the department of neurosurgery between January 2019 and December 2019 were reviewed and analyzed in this study. Computed tomography angiography was used to confirm and locate the site of aneurysms. BMD, serum calcium, and Vitamin D levels were measured. Statistical Analysis Used: Linear or logistic regression statistical models were applied to found the association between BMD and IA size. To confirm the statistical significance, P < 0.05 (twos-tailed) was considered as statistically significant. Results: Of the studied 100 patients, 61 patients were female and 39 were male. According to the age group, patients were divided into five categories: below 30, 31–40, 41–50, 51–60, and ≥60 years. The most common site of aneurysm observed to be the anterior communicating artery (Acom); 39.25% of the patients had Acom aneurysm followed by the middle cerebral artery (18.69%). This clearly shows that the occurrence of aneurysm is more prominent in anterior circulation as compared to posterior circulation. The results showed that there is a negative linear correlation between BMD and size of aneurysm ( P = 0.00043, r =−0.12). Sex-specific analysis showed that females have lower mean BMD value as compared to males (i.e., females 0.785 ± 0.13; males 0.887 ± 0.13; P = 0.0003). We also found that the multiplicity of IAs also shows an association with BMD (i.e. mean BMD: 0.825 ± 0.14, whereas BMD of patients with multiple aneurysms was 0.747 ± 0.08; P = 0.05). Of 100 patients, 66 were observed calcium deficient (normal range: 8.8–10.2 mg/dl). The obtained mean value of calcium was 8.56 ± 0.859 standard deviation (SD), i.e., below the normal range of calcium. In the case of Vitamin D, 85% of the patients were observed Vitamin D deficient, whereas 14 patients showed Vitamin D insufficiency and merely 1 patient has Vitamin D sufficiency. The mean 25-hydroxy Vitamin D level obtained in our study was 14.57 ± 5.60 (SD), which is considered as Vitamin D deficiency. Conclusions: The size and multiplicity of IA can be associated with BMD, calcium, and Vitamin D. The results from the research provide evidence of common pathophysiology between the development of IA and these factors.

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“…The dominant environmental risk factors for aneurysms include age, gender, smoking, alcohol, and hypertension. 35,38 Hypertension is a known risk factor for the development of IA, 35 aortic aneurysm, 39 and aortic dissection. 40 Blood flow or blood pressure is an important modulator of arterial growth.…”

Section: Potential Mechanismmentioning

confidence: 99%

Prevalence of Intracranial Aneurysm in Patients with Aortopathy: A Systematic Review with Meta-Analyses

Xia

Jiang

et al. 2020

J Stroke

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Background and Purpose Patients with aortic disease might have an increased risk of intracranial aneurysm (IA). We conducted this research to assess the prevalence of IA in patients with aortopathy, considering the impact of gender, age, and cardiovascular risk factors.Methods We searched PubMed and Scopus from inception to August 2019 for epidemiological studies reporting the prevalence of IA in patients with aortopathy. Random-effect meta-analyses were performed to calculate the overall prevalence, and the effect of risk factors on the prevalence was also evaluated. Anatomical location of IAs in patients suffered from distinct aortic disease was extracted and further analyzed.Results Thirteen cross-sectional studies involving 4,041 participants were included in this systematic review. We reported an estimated prevalence of 12% (95% confidence interval [CI], 9% to 14%) of IA in patients with aortopathy. The pooled prevalence of IA in patients with bicuspid aortic valve, coarctation of the aorta, aortic aneurysm, and aortic dissection was 8% (95% CI, 6% to 10%), 10% (95% CI, 7% to 14%), 12% (95% CI, 9% to 15%), and 23% (95% CI, 12% to 34%), respectively. Gender (female) and smoking are risk factors related to an increased risk of IA. The anatomical distribution of IAs was heterogeneously between participants with different aortic disease.Conclusions According to current epidemiological evidence, the prevalence of IA in patients with aortic disease is quadrupled compared to that in the general population, which suggests that an early IA screening should be considered among patients with aortic disease for timely diagnosis and treatment of IA.

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New Pathophysiological Considerations on Cerebral Aneurysms

Cited by 53 publications

References 71 publications

Aspirin associated with decreased rate of intracranial aneurysm growth

Aspirin associated with decreased rate of intracranial aneurysm growth

Association of bone mineral density, Vitamin D, and serum calcium in intracranial aneurysm

Prevalence of Intracranial Aneurysm in Patients with Aortopathy: A Systematic Review with Meta-Analyses

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