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Prenatal High‐Sucrose Diet Induced Vascular Dysfunction in Thoracic Artery of Fetal Offspring
Author(s) -
Feng Xueqin,
Yu Tiantian,
Zhang Yumeng,
Li Lijuan,
Qu Miaomiao,
Wang Jishui,
Dong Fangxiang,
Zhang Lihua,
Wang Fengge,
Zhang Fanyong,
Zhou Xiuwen,
Xu Zhice,
Man Dongmei
Publication year - 2021
Publication title -
molecular nutrition and food research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.495
H-Index - 131
eISSN - 1613-4133
pISSN - 1613-4125
DOI - 10.1002/mnfr.202100072
Subject(s) - medicine , endocrinology , fetus , offspring , vascular smooth muscle , calcium , thoracic aorta , angiotensin ii receptor type 1 , angiotensin ii , pregnancy , receptor , biology , aorta , genetics , smooth muscle
Scope Maternal nutrition during pregnancy is related to intrauterine fetal development. The authors’ previous work reports that prenatal high sucrose (HS) diet impaired micro‐vascular functions in postnatal offspring. It is unclear whether/how prenatal HS causes vascular injury during fetal life. Methods and results Pregnant rats are fed with normal drinking water or 20% high‐sucrose solution during the whole gestational period. Pregnant HS increases maternal weight before delivery. Fetal thoracic aorta is separated for experiments. Angiotensin II (AII)‐stimulated vascular contraction of fetal thoracic arteries in HS group is greater, which mainly results from the enhanced AT1 receptor (AT1R) function and the downstream signaling. Nifedipine significantly increases vascular tension in HS group, indicating that the L‐type calcium channels (LTCCs) function is strengthened. 2‐Aminoethyl diphenylborinate (2‐APB), inositol 1,4,5‐trisphosphate receptors (IP3Rs) inhibitor, increases vascular tension induced by AII in HS group and ryanodine receptors‐sensitive vascular tone shows no difference in the two groups, which suggested that the activity of IP3Rs‐operated calcium channels is increased. Conclusion These findings suggest that prenatal HS induces vascular dysfunction of thoracic arteries in fetal offspring by enhancing AT1R, LTCCs function and IP3Rs‐associated calcium channels, providing new information regarding the impact of prenatal HS on the functional development of fetal vascular systems.