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Pediatric radiofrequency ablation of cardiac parasympathetic ganglia to achieve vagal denervation. HeartRhythm Case Rep 2020; 6:879-883. [PMID: 33204627 PMCID: PMC7653474 DOI: 10.1016/j.hrcr.2020.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Ran J, Yang HH, Huang HP, Huang HL, Xu Z, Zhang W, Wang ZX. ZEB1 modulates endometrial receptivity through epithelial-mesenchymal transition in endometrial epithelial cells in vitro. Biochem Biophys Res Commun 2020; 525:699-705. [PMID: 32139122 DOI: 10.1016/j.bbrc.2020.02.153] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 02/25/2020] [Indexed: 01/18/2023]
Abstract
Zinc finger E-box binding homeobox 1 (ZEB1) promotes epithelial-mesenchymal transition (EMT) in carcinogenesis, but its role in embryo implantation has not yet been identified. The present study sought to verify if ZEB1 plays a role in endometrial receptivity through regulation of EMT during embryo implantation. Endometrial epithelium from sixty patients in phase of the menstrual cycle (including proliferative and secretory phases) were collected for assessment of mRNA/protein expression. In human endometrial adenocarcinoma cell line RL95-2, ZEB1 expression was suppressed by using shRNA, and the cell function and mRNA/protein expression were evaluated. RL95-2 cells and human choriocarcinoma cell line JAR were co-cultured to establish embryo implantation model in vitro. The results showed that, ZEB1 was highly expressed at both mRNA and protein levels in human endometrium during mid-secretory phase of the menstrual cycle. Knockdown of ZEB1 expression in RL95-2 cells attenuated cell growth, migration, DNA replication, and altered expression of E-cadherin and vimentin at both mRNA and protein levels. Interestingly, knockdown of ZEB1 expression in RL95-2 cells potently suppressed JAR spheroid attachment in vitro (P < 0.01). Additionally, the. Conclusively, knockdown of ZEB1 suppressed embryo implantation in vitro, paralleled with alteration of EMT markers. ZEB1 is likely to modulate endometrial receptivity through promotion of EMT, that could be crucial for embryo implantation process.
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Affiliation(s)
- Jing Ran
- The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, PR China
| | - Huan-Huan Yang
- The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, PR China
| | - Hui-Ping Huang
- The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, PR China
| | - Hong-Lang Huang
- The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, PR China
| | - Zhong Xu
- The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, PR China
| | - Wei Zhang
- The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, PR China; Department of Basic Medicine, School of Medicine, Xiamen University, Xiamen, 361102, PR China.
| | - Zhan-Xiang Wang
- The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, PR China.
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Selective autonomic stimulation of the AV node fat pad to control rapid post-operative atrial arrhythmias. PLoS One 2017; 12:e0183804. [PMID: 28902899 PMCID: PMC5597131 DOI: 10.1371/journal.pone.0183804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Accepted: 08/13/2017] [Indexed: 11/24/2022] Open
Abstract
Junctional ectopic tachycardia (JET) and atrial fibrillation (AF) occur in patients recovering from open-heart surgery (OHS). Pharmacologic treatment is used for the control of post-operative atrial arrhythmias (POAA), but is associated with side effects. There is a need for a reversible, modulated solution to rate control. We propose a non-pharmacologic technique that can modulate AV nodal conduction in a selective fashion. Ten mongrel dogs underwent OHS. Stimulation of the anterior right (AR) and inferior right (IR) fat pad (FP) was done using a 7-pole electrode. The IR was more effective in slowing the ventricular rate (VR) to AF (52 +/- 20 vs. 15 +/- 10%, p = 0.003) and JET (12 +/- 7 vs. 0 +/- 0%, p = 0.02). Selective site stimulation within a FP region could augment the effect of stimulation during AF (57 +/- 20% (maximum effect) vs. 0 +/- 0% (minimum effect), p<0.001). FP stimulation at increasing stimulation voltage (SV) demonstrated a voltage-dependent effect (8 +/- 14% (low V) vs. 63 +/- 17 (high V) %, p<0.001). In summary, AV node fat pad stimulation had a selective effect on the AV node by decreasing AV nodal conduction, with little effect on atrial activity.
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