在接受维生素D测试的儿童中,维生素D缺乏与生化异常的患病率
Mark J Bolland1, Paul Hofman2, Andrew Grey1
1Department of Medicine, University of Auckland, Auckland, New Zealand.
Clinical endocrinology
|December 27, 2024
概括
缺乏维生素D的并发症,如恶心,在测试25-氧维生素D (25OHD) 的儿童中很少见. 这些问题主要影响3岁以下的婴儿.
科学领域:
- 儿科内分泌学 儿科内分泌学
- 营养科学 营养科学
- 临床生物化学 临床生物化学
背景情况:
- 儿童的维生素D缺乏 (VDD) 可以导致低血和恶心病.
- 与这些并发症相关的25-氧维生素D (25OHD) 精确水平尚不清楚.
研究的目的:
- 为了确定VDD并发症在儿童中的患病率.
- 为了确定25OHD度与低血和恶心病相关.
主要方法:
- 对儿童 (<18岁) 的30663个25OHD测量的回顾性分析.
- 生物化学标志物 (血清,PTH,ALP) 在25OHD测试后的6个月内被分析.
- 经确认的具有生化异常的VDD (VDDba) 定义为低,高PTH和高ALP.
主要成果:
- 分析了来自9516名儿童的12,858个符合条件的25OHD测量结果.
- 25OHD的中位数为61nmol/L;36%的<50nmol/L,10%的<25nmol/L.
- 临床确认的VDDba发生在所有测量的0.9%,主要发生在3岁以下的儿童中;8%的25OHD<25nmol/L的人证实了VDDba.
结论:
- 具有生化异常的VDD在接受25OHD测试的儿童中不常见.
- 这些并发症几乎完全影响3岁以下的儿童.
- 该研究澄清了VDD并发症影响的低患病率和特定的人口统计.
相关概念视频
Role of Skin in Vitamin D Synthesis
5.0K
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...
5.0K
Role of Vitamins in Maintaining Bone Health
3.1K
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...
3.1K
Bone Disorders
3.4K
Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
3.4K
Pedigree Analysis
83.9K
Overview
83.9K
Skeleton and Calcium Homeostasis
4.4K
Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.
4.4K
Overview of Protein Metabolism
723
Proteins are broken down into amino acids during digestion. Unlike fats and carbohydrates, which are stored for later use, proteins are not. Instead, amino acids are either used to produce ATP through oxidation or contribute to the creation of new proteins for the growth and repair of the body. Any surplus amino acids from the diet are converted into glucose or triglycerides rather than excreted.
Amino acids play various roles in the body once they are absorbed into cells. They are restructured...
Amino acids play various roles in the body once they are absorbed into cells. They are restructured...
723


