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Vitamin D deficiency promotes intracranial aneurysm rupture (mice) – July 2024


Vitamin D deficiency promotes intracranial aneurysm rupture

J Cereb Blood Flow Metab. 2024 Jul;44(7):1174-1183. doi: 10.1177/0271678X241226750
Tetsuro Kimura 1, Redi Rahmani 1 2, Takeshi Miyamoto 1, Yoshinobu Kamio 1, Daisuke Kudo 1, Hiroki Sato 1, Taichi Ikedo 1, Jacob F Baranoski 3, Hiroki Uchikawa 1, Jinglu Ai 1, Michael T Lawton 1 3, Tomoki Hashimoto 1

Far more rupture deaths in mice on low vitamin D diet
Image

Intracranial aneurysm rupture causes severe disability and high mortality. Epidemiological studies show a strong association between decreased vitamin D levels and an increase in aneurysm rupture. However, the causality and mechanism remain largely unknown. In this study, we tested whether vitamin D deficiency promotes aneurysm rupture and examined the underlying mechanism for the protective role of vitamin D against the development of aneurysm rupture utilizing a mouse model of intracranial aneurysm.

Mice consuming a vitamin D-deficient diet had a higher rupture rate than mice with a regular diet. Vitamin D deficiency increased proinflammatory cytokines in the cerebral arteries. Concurrently, vitamin D receptor knockout mice had a higher rupture rate than the corresponding wild-type littermates. The vitamin D receptors on endothelial and vascular smooth muscle cells, but not on hematopoietic cells, mediated the effect of aneurysm rupture. Our results establish that vitamin D protects against the development of aneurysmal rupture through the vitamin D receptors on vascular endothelial and smooth muscle cells. Vitamin D supplementation may be a viable pharmacologic therapy for preventing aneurysm rupture.


Note: Intracranial aneurysm rupture is somewhat similar but different from a Hemorrhagic Stroke

Example: Only 50% of the incidence, but far more deadly
Details at Perplexity AI


VitaminDWiki – Stroke category contains

124 items in stroke category - see also Overview Stroke and vitamin D,
Overview Hypertension and Vitamin D  Overview Cardiovascular and vitamin D

Stroke more likely if low Vitamin D

Post-Stroke worse if low Vitamin D

Post-Stroke better if add Vitamin D

Post-Stroke better if Vitamin D actually gets to cells

9 studies in both categories Depression and Stroke

Attached files

ID Name Comment Uploaded Size Downloads
21397 Poor survival with poor VDR.webp admin 05 Jul, 2024 9.59 Kb 7
21396 Survival.webp admin 05 Jul, 2024 8.64 Kb 42