Presence and expression of apelin and apelin receptor in bitch placenta

被引:5
|
作者
Troisi, A. [1 ,2 ]
Dall'Aglio, C. [1 ]
Maranesi, M. [1 ]
Orlandi, R. [2 ]
Speranza, R. [3 ]
Zerani, M. [1 ]
Polisca, A. [1 ]
机构
[1] Univ Perugia, Dipartimento Med Vet, Via San Costanzo 4, I-06124 Perugia, Italy
[2] Tynts Clin Vet, Via Aldo Bartocci 1G, I-05100 Terni, Italy
[3] Guadia Finanza, Corso Allevamento & Addestramento Cinofilo 46, I-06061 Castiglione Del Ingo, Italy
关键词
Apelin; Apelin receptor; Placenta; Bitch; Pregnancy; MESSENGER-RNA EXPRESSION; APJ RECEPTOR; ORPHAN RECEPTOR; ENDOGENOUS LIGAND; DOPPLER EVALUATION; NORMAL GESTATION; FETAL VESSELS; LOCALIZATION; PREGNANCY; PROLIFERATION;
D O I
10.1016/j.theriogenology.2019.11.016
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Apelin is a potent inotropic agent causing endothelium-mediated vasodilation and is involved in vessel formation by interacting with a specific receptor. Its cardiovascular profile suggests a role in the regulation of gestational hemodynamic changes. The expression of apelin and its receptor has been reported in some portions of the reproductive tract of different mammalian species. As far as we know, there are no reports describing the expression of apelin and apelin receptor in bitch's placenta. Therefore, the aim of this study was to investigate, for the first time, the presence and distribution of apelin and apelin receptor in bitch placenta by molecular biology and immunohistochemical techniques. Sixteen adult female half-breed bitches were used. The animals were divided into two groups based on the stage of pregnancy: group 1 (mid-gestation n = 8) and group 2 (end gestation n = 8). These bitches were subjected to ovariohysterectomy (group1) or non-conservative caesarean section (group 2). The immunohistochemical technique revealed the presence of positive immune reaction for apelin and apelin receptor in all the samples examined at 30 days and at the end of pregnancy. In particular, apelin and apelin receptor staining was evident in the cytoplasms of cytotrophoblasts and in epithelial cells of the maternal portion. Even if not included into the structure of the placenta, the uterine glands also exhibited a positive immune reaction for apelin and apelin receptor. The RT-PCR analysis showed the presence of transcripts for apelin and apelin receptor in all the placenta samples examined. On the basis of our results it was also possible to hypothesize a potential role of apelin in the control of local placenta blood flow during pregnancy development in bitches. (C) 2019 Elsevier Inc. All rights reserved.
引用
收藏
页码:192 / 196
页数:5
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