胰岛素耐药性和经更年期后骨质疏松症的发病
D I I Greere1,2, F Grigorescu3, D Manda4
1"C.I. Parhon" National Institute of Endocrinology - Clinical Endocrinology, Bucharest, Romania.
概括
绝经后的骨质疏松症与胰岛素抵抗 (IR) 和代谢综合征 (MetS) 有关. 本综述探讨了骨健康,葡萄糖代谢和肥胖之间的复杂关系,强调了IR.
科学领域:
- 内分泌学 在内分泌学.
- 代谢综合征研究 代谢综合征研究
- 骨生物学 骨生物学 骨生物学
背景情况:
- 绝经后妇女的骨质疏松症 (OP) 经常与胰岛素抵抗 (IR) 和代谢综合征 (MetS) 相关.
- 关于在绝经后的OP中MetS的同时发生的先前研究产生了相互矛盾的结果.
- 骨作为内分泌器官起作用,影响系统代谢.
研究的目的:
- 通过检查细胞和分子机制来阐明IR的病原性.
- 系统地审查使用恒温模式评估 (HOMA) 指数评估IR的研究.
- 为了澄清骨代谢,IR和绝经后妇女的代谢综合征之间的复杂关系.
主要方法:
- 在骨代谢中IR的细胞和分子方面的审查.
- 系统审查使用恒温模式评估 (HOMA) 指数的研究.
- 分析了HOMA指数,骨矿物密度 (BMD),骨质素和与肥胖有关的因素之间的相关性.
主要成果:
- 胰岛素和IGF-1受体存在于骨质母细胞和骨质母细胞上,影响骨的发育和维护.
- 骨内分泌系统的缺陷可以导致系统性IR和骨特异性IR,通过骨素影响葡萄糖恒温.
- 研究表明,在中度IR的绝经后妇女中,HOMA指数和BMD之间存在正相关性,但与骨质卡尔辛有负相关性.
结论:
- 骨和代谢健康之间的相互作用是复杂的,涉及诸如胰岛素,IGF-1和骨质卡尔辛等因素.
- 极端IR的遗传综合征表现出高的BMD或加速生长,这表明IR严重程度和骨特征之间存在联系.
- 绝经后妇女的IR,肥胖和骨健康之间的关系是复杂的,受adipokines,遗传学和身体组成的影响.
相关概念视频
Bone Disorders
3.5K
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...
3.5K
Insulin: The Receptor and Signaling Pathways
1.2K
Insulin action is mediated through a receptor tyrosine kinase, akin to the IGF-1 receptor. The number of receptors per cell varies significantly, from 40 on erythrocytes to 300,000 on adipocytes and hepatocytes. The insulin receptor consists of linked α/β subunit dimers, forming a heterotetramer glycoprotein with two extracellular α subunits and two β subunits spanning the membrane. The α subunits inhibit the inherent tyrosine kinase activity of the β subunits, but...
1.2K
Bone Remodeling
38.3K
Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
38.3K
Pathophysiology of Diabetes
935
Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
935
Menopause
161
Menopause, a natural biological process marking the end of a woman's fertility, typically occurs between the fifth and sixth decade of life. This phase is characterized by the exhaustion of the ovarian follicle pool, leading to less responsive ovaries despite the high levels of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). The consequential decrease in estrogen production results in symptoms like hot flashes, heavy sweating, headaches, hair loss, muscle pains, vaginal...
161
Osteoclasts in Bone Remodeling
2.9K
Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during...
2.9K


