维生素D缺乏会促进内动脉瘤破裂
Tetsuro Kimura1, Redi Rahmani1,2, Takeshi Miyamoto1
1Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, USA.
概括
维生素D缺乏会增加内动脉瘤破裂的风险. 维生素D通过作用于血管细胞来防止破裂,这表明补充剂可以预防这种情况.
科学领域:
- 神经科学是一个神经科学.
- 内分泌学 在内分泌学.
- 心血管研究研究心血管研究
背景情况:
- 内动脉瘤破裂导致显著的死亡率和残疾.
- 流行病学研究表明,低维生素D水平与动脉瘤破裂增加之间存在联系.
- 人们还不太了解因果关系和潜在的机制.
研究的目的:
- 调查维生素D缺乏是否促进内动脉瘤破裂.
- 阐明维生素D对动脉瘤破裂产生保护作用的机制.
主要方法:
- 利用大脑内动脉瘤的小鼠模型.
- 在维生素D缺乏饮食的小鼠中的破裂率与正常饮食相比.
- 研究了维生素D受体 (VDR) 的作用,通过比较VDR淘汰小鼠与野生类型的 littermates.
主要成果:
- 吃维生素D缺乏饮食的小鼠表现出更高的动脉瘤破裂率.
- 维生素D缺乏与大脑动脉中益炎性细胞因子增加有关.
- 与野生类型小鼠相比,VDR淘汰小鼠的破裂率更高.
- 维生素D的保护作用是由VDRs在内皮和血管光滑肌细胞上的介导,而不是造血细胞.
结论:
- 维生素D缺乏会导致内动脉瘤破裂.
- 维生素D通过血管内皮和光滑肌肉细胞上的VDRs保护血管动脉瘤破裂.
- 补充维生素D可能是预防动脉瘤破裂的潜在治疗策略.
相关概念视频
01:25Role of Vitamins in Maintaining Bone Health
3.3K
The growth and maintenance of bone are regulated by a combination of nutritional factors, including vitamins, such as vitamin A, B12, C, D, and K.
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
3.3K
01:23Role of Skin in Vitamin D Synthesis
5.2K
The skin plays a crucial role in the synthesis of vitamin D, a vital nutrient for various physiological processes in the body. Vitamin D is unique because it can be synthesized in the skin through a series of chemical reactions triggered by exposure to ultraviolet B (UVB) radiation from sunlight.
The solar UV B rays (290-315 nm) are absorbed by the skin, and 7-dehydrocholesterol (provitamin D3) photolyzes it to previtamin D3, which undergoes a rapid transformation to vitamin...
The solar UV B rays (290-315 nm) are absorbed by the skin, and 7-dehydrocholesterol (provitamin D3) photolyzes it to previtamin D3, which undergoes a rapid transformation to vitamin...
5.2K
01:25Glaucoma: Overview
574
Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
574