Diverse and Complementary Effects of Ghrelin and Obestatin

作者：Daniel Villarreal, Geetali Pradhan, Yu Zhou, Bingzhong Xue, Yuxiang Sun · 发表于：Biomolecules · 年份：2022 · DOI：10.3390/biom12040517 · 被引用次数：31 · 研究领域：Regulation of Appetite and Obesity、Adipose Tissue and Metabolism、Biochemical Analysis and Sensing Techniques

Ghrelin and obestatin are two "sibling proteins" encoded by the same preproghrelin gene but possess an array of diverse and complex functions. While there are ample literature documenting ghrelin's functions, the roles of obestatin are less clear and controversial. Ghrelin and obestatin have been perceived to be antagonistic initially; however, recent studies challenge this dogma. While they have opposing effects in some systems, they function synergistically in other systems, with many functions remaining debatable. In this review, we discuss their functional relationship under three "C" categories, namely complex, complementary, and contradictory. Their functions in food intake, weight regulation, hydration, gastrointestinal motility, inflammation, and insulin secretion are complex. Their functions in pancreatic beta cells, cardiovascular, muscle, neuroprotection, cancer, and digestive system are complementary. Their functions in white adipose tissue, thermogenesis, and sleep regulation are contradictory. Overall, this review accumulates the multifaceted functions of ghrelin and obestatin under both physiological and pathological conditions, with the intent of contributing to a better understanding of these two important gut hormones.