Siddiqui Sharif Hasan, Rossi Noreen F
Department of Physiology, Wayne State University, Detroit, MI 48201, USA.
John D. Dingell VA Medical Center, Detroit, MI 48201, USA.
Nutrients. 2025 Jul 30;17(15):2511. doi: 10.3390/nu17152511.
Hypertension is an important risk factor for cardiovascular diseases. High salt intake when consumed with excess fructose enhances hypertension and resultant cardiovascular disease. Usually, the small intestine absorbs dietary fructose, and the proximal tubule of kidney reabsorbs filtered fructose into the circulation with the help of different transporters including SGLT4 and SGLT5. Very recently, SGLT5 mRNA has also been found to be expressed in the heart. High-fructose diet stimulates the sympathetic nervous system and renin-angiotensin-aldosterone (RAAS) activity, of which both are responsible for endothelial dysfunction and are associated with salt-sensitive hypertension. Few studies exist regarding the effects of SGLT4 and SGLT5 on cardiovascular function and blood pressure. However, SGLT4 gene knockout does not alter fructose-associated impact on blood pressure. In contrast, blood pressure does not increase in SGLT5 knockout rats even during fructose consumption. Given that limiting fructose and salt consumption as a public health strategy has proven challenging, we hope that studies into SGLT4 and SGLT5 transporters will open new research initiatives to address salt-sensitive hypertension and cardiovascular disease. This review highlights current information about SGLT4 and SGLT5 on fructose absorption, salt-sensitive hypertension, cardiovascular disease and points the way for the development of therapeutic fructose inhibitors that limit adverse effects.
高血压是心血管疾病的重要危险因素。高盐摄入与过量果糖共同作用时会加剧高血压及由此引发的心血管疾病。通常,小肠吸收膳食中的果糖,肾脏近端小管借助包括SGLT4和SGLT5在内的不同转运蛋白将滤过的果糖重吸收回血液循环。最近,还发现SGLT5 mRNA在心脏中表达。高果糖饮食会刺激交感神经系统和肾素-血管紧张素-醛固酮(RAAS)活性,二者均会导致内皮功能障碍并与盐敏感性高血压相关。关于SGLT4和SGLT5对心血管功能和血压的影响,现有研究较少。然而,敲除SGLT4基因并不会改变果糖对血压的影响。相比之下,即使在食用果糖期间,SGLT5基因敲除大鼠的血压也不会升高。鉴于将限制果糖和盐的摄入作为一项公共卫生策略已被证明具有挑战性,我们希望对SGLT4和SGLT5转运蛋白的研究能够开启新的研究项目,以解决盐敏感性高血压和心血管疾病问题。这篇综述重点介绍了有关SGLT4和SGLT5在果糖吸收、盐敏感性高血压、心血管疾病方面的现有信息,并为开发限制不良影响的治疗性果糖抑制剂指明了方向。
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