Ischemic strokes half as large if had good level of vitamin D (mice) – Feb 2018

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Vitamin D3 Supplementation Reduces Subsequent Brain Injury and Inflammation Associated with Ischemic Stroke

NeuroMolecular Medicine. pp 1–13
Megan A. EvansHyun Ah KimYeong Hann LingSandy UongAntony VinhT. Michael De SilvaThiruma V. ArumugamAndrew N. ClarksonGraeme R. ZoskyGrant R. DrummondBrad R. S. BroughtonChristopher G. Sobe

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Acute inflammation can exacerbate brain injury after ischemic stroke. Beyond its well-characterized role in calcium metabolism, it is becoming increasingly appreciated that the active form of vitamin D, 1,25-dihydroxyvitamin D3 (1,25-VitD3), has potent immunomodulatory properties. Here, we aimed to determine whether 1,25-VitD3 supplementation could reduce subsequent brain injury and associated inflammation after ischemic stroke. Male C57Bl6 mice were randomly assigned to be administered either 1,25-VitD3 (100 ng/kg/day) or vehicle i.p. for 5 day prior to stroke. Stroke was induced via middle cerebral artery occlusion for 1 h followed by 23 h reperfusion. At 24 h post-stroke, we assessed infarct volume, functional deficit, expression of inflammatory mediators and numbers of infiltrating immune cells. Supplementation with 1,25-VitD3 reduced infarct volume by 50% compared to vehicle. Expression of pro-inflammatory mediators IL-6, IL-1β, IL-23a, TGF-β and NADPH oxidase-2 was reduced in brains of mice that received 1,25-VitD3 versus vehicle. Brain expression of the T regulatory cell marker, Foxp3, was higher in mice supplemented with 1,25-VitD3 versus vehicle, while expression of the transcription factor, ROR-γ, was decreased, suggestive of a reduced Th17/γδ T cell response. Immunohistochemistry indicated that similar numbers of neutrophils and T cells were present in the ischemic hemispheres of 1,25-VitD3- and vehicle-supplemented mice. At this early time point, there were also no differences in the impairment of motor function.
These data indicate that prior administration of exogenous vitamin D, even to vitamin D-replete mice, can attenuate infarct development and exert acute anti-inflammatory actions in the ischemic and reperfused brain.

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VitaminDWiki – Stroke category contains

131 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

• Stroke 74% less likely if high vitamin D (7,295 women 20-50 years old) – July 2017
• Stroke is 13.5 X more likely if low vitamin D and high blood pressure – March 2015
• Ischemic stroke 17 X more likely if low vitamin D – April 2017
• Stroke is strongly associated with Calcification of cerebral arteries (perhaps low Vitamin D, Vitamin K, Mg…) – March 2018
• Ischemic Stroke 3X more likely if Vitamin D Receptor gene change (Fok 1) – Jan 2014

Post-Stroke worse if low Vitamin D

• Poor Acute Ischemic Stroke 4X more likely if low Vitamin D - Nov 2023
• Stroke risks increased if low Vitamin D: Death 3.6 X, recurrence 5.5 X – Meta-analysis Nov 2019
• Stroke outcome at 3 months was 3X worse if bad stroke and low vitamin D – Jan 2020
• Death after Ischemic Stroke 2.5 X more likely if less than 10 ng of Vitamin D – May 2019
• Vascular dementia (after strokes) 32X more likely in Hypertensives with low vitamin D – Oct 2015
• Depression following a stroke is 2.7 X more likely if low vitamin D – Sept 2018
• Stroke incidence not associated with low Vitamin D (but stroke outcome is) – Aug 2019

Post-Stroke better if add Vitamin D

• Post-stroke Vitamin D supplementation helped in 11 ways – May 2023
• Improved recovery from ischemic stroke with Vitamin D (300,000 IU injection) – RCT June 2018
• Better outcome following Ischemic stroke if injected with 600,000 IU of vitamin D – RCT Feb 2017
• Ischaemic stroke – Vitamin D doubled survival (Injection followed by monthly 60,000 IU) – RCT Aug 2016
• Stroke patients need more than 2,000 IU of vitamin D (found this time in Japan) – RCT June 2019

Post-Stroke better if Vitamin D actually gets to cells

• Resveratrol fights Parkinson, Alzheimers, Diabetes, Cardiovascular, ALS, Stroke, etc.– Nov 2018
• Stroke rehabilitation (and prevention) requires Vitamin D actually getting to cells – March 2020

11 studies in both categories of Depression and Stroke

This list is automatically updated

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