Alvarenga L, Cardozo L F M F, Lindholm B, Stenvinkel P, Mafra D
Post Graduation Program in Medical Sciences, (UFF) Federal Fluminense University Niterói-Rio de Janeiro (RJ), Niterói, Brazil.
Post Graduation Program in Cardiovascular Sciences, Federal Fluminense University (UFF), Niterói, Rio de Janeiro (RJ) Brazil.
EPMA J. 2020 Nov 18;11(4):565-579. doi: 10.1007/s13167-020-00228-9. eCollection 2020 Dec.
Alkaline phosphatase (AP) is a ubiquitous membrane-bound glycoprotein that catalyzes phosphate monoesters' hydrolysis from organic compounds, an essential process in cell signaling. Four AP isozymes have been described in humans, placental AP, germ cell AP, tissue nonspecific AP, and intestinal AP (IAP). IAP plays a crucial role in gut microbial homeostasis, nutrient uptake, and local and systemic inflammation, and its dysfunction is associated with persistent inflammatory disorders. AP is a strong predictor of mortality in the general population and patients with cardiovascular and chronic kidney disease (CKD). However, little is known about IAP modulation and its possible consequences in CKD, a disease characterized by gut microbiota imbalance and persistent low-grade inflammation. Mitigating inflammation and dysbiosis can prevent cardiovascular complications in patients with CKD, and monitoring factors such as IAP can be useful for predicting those complications. Here, we review IAP's role and the results of nutritional interventions targeting IAP in experimental models to prevent alterations in the gut microbiota, which could be a possible target of predictive, preventive, personalized medicine (PPPM) to avoid CKD complications. Microbiota and some nutrients may activate IAP, which seems to have a beneficial impact on health; however, data on CKD remains scarce.
碱性磷酸酶(AP)是一种普遍存在的膜结合糖蛋白,它催化有机化合物中磷酸单酯的水解,这是细胞信号传导中的一个重要过程。人类已发现四种AP同工酶,即胎盘AP、生殖细胞AP、组织非特异性AP和肠道AP(IAP)。IAP在肠道微生物群稳态、营养吸收以及局部和全身炎症中起着关键作用,其功能障碍与持续性炎症性疾病有关。AP是普通人群以及心血管疾病和慢性肾脏病(CKD)患者死亡率的有力预测指标。然而,关于IAP调节及其在CKD中的可能后果知之甚少,CKD是一种以肠道微生物群失衡和持续性低度炎症为特征的疾病。减轻炎症和生态失调可以预防CKD患者的心血管并发症,监测诸如IAP等因素可能有助于预测这些并发症。在此,我们综述了IAP的作用以及在实验模型中针对IAP的营养干预结果,这些干预旨在预防肠道微生物群的改变,而肠道微生物群改变可能是预测、预防、个性化医学(PPPM)避免CKD并发症的一个可能靶点。微生物群和一些营养素可能激活IAP,这似乎对健康有有益影响;然而,关于CKD的数据仍然很少。