1
|
NOTCH1 Mutations in Aortic Stenosis: Association with Osteoprotegerin/RANK/RANKL. BIOMED RESEARCH INTERNATIONAL 2017; 2017:6917907. [PMID: 28246602 PMCID: PMC5299165 DOI: 10.1155/2017/6917907] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 12/25/2016] [Indexed: 11/29/2022]
Abstract
Background. The NOTCH pathway is known to be important in the pathogenesis of calcific aortic valve disease, possibly through regulators of osteoprotegerin (OPG), receptor activator of nuclear factor κB (RANK), and its ligand (RANKL) system. The purpose of the present study was to search for possible associations between NOTCH1 gene mutations and circulating levels of OPG and soluble RANKL (sRANKL) in patients with aortic stenosis (AS). Methods. The study was performed on 61 patients with AS including 31 with bicuspid and 30 with tricuspid aortic valves. We applied a strategy of targeted mutation screening for 10 out of 34 exons of the NOTCH1 gene by direct sequencing. Serum OPG and sRANKL levels were assessed. Results. In total, 6 genetic variants of the NOTCH1 gene including two new mutations were identified in the study group. In an age- and arterial hypertension-adjusted multivariable regression analysis, the serum OPG levels and the OPG/sRANKL ratio were correlated with NOTCH1 missense variants. All studied missense variants in NOTCH1 gene were found in Ca(2+)-binding EGF motif of the NOTCH extracellular domain bound to Delta-like 4. Conclusion. Our results suggest that the OPG/RANKL/RANK system might be directly influenced by genetic variants of NOTCH1 in aortic valve calcification.
Collapse
|
2
|
Rzepka R, Dołęgowska B, Sałata D, Rajewska A, Budkowska M, Domański L, Kwiatkowski S, Mikołajek-Bedner W, Torbé A. Soluble receptors for advanced glycation end products and receptor activator of NF-κB ligand serum levels as markers of premature labor. BMC Pregnancy Childbirth 2015; 15:134. [PMID: 26059227 PMCID: PMC4461927 DOI: 10.1186/s12884-015-0559-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Accepted: 05/18/2015] [Indexed: 01/12/2023] Open
Abstract
Background This study aimed to determine the relationships between secretory and endogenous secretory receptors for advanced glycation end products (sRAGE, esRAGE), sRANKL, osteoprotegerin and the interval from diagnosis of threatened premature labor or premature rupture of the fetal membranes to delivery, and to evaluate the prognostic values of the assessed parameters for preterm birth. Methods Ninety women between 22 and 36 weeks’ gestation were included and divided into two groups: group A comprised 41 women at 22 to 36 weeks’ gestation who were suffering from threatened premature labor; and group B comprised 49 women at 22 to 36 weeks’ gestation with preterm premature rupture of the membranes. Levels of sRAGE, esRAGE, sRANKL, and osteoprotegerin were measured. The Mann–Whitney test was used to assess differences in parameters between the groups. For statistical analysis of relationships, correlation coefficients were estimated using Spearman’s test. Receiver operating characteristics were used to determine the cut-off point and predictive values. Results In group A, sRAGE and sRANKL levels were correlated with the latent time from symptoms until delivery (r = 0.422; r = −0.341, respectively). The sensitivities of sRANKL and sRAGE levels for predicting preterm delivery were 0.895 and 0.929 with a negative predictive value (NPV) of 0.857 and 0.929, respectively. In group B, sRAGE and sRANKL levels were correlated with the latent time from pPROM until delivery (r = 0.381; r = −0.439). The sensitivity of sRANKL and sRAGE for predicting delivery within 24 h after pPROM was 0.682 and 0.318, with NPVs of 0.741 and 0.625, respectively. Levels of esRAGE and sRANKL were lower in group A than in group B (median = 490.2 vs 541.1 pg/mL; median = 6425.0 vs 11362.5 pg/mL, respectively). Conclusions Correlations between sRAGE, sRANKL, and pregnancy duration after the onset of symptoms suggest their role in preterm delivery. The high prognostic values of these biomarkers indicate their usefulness in diagnosis of pregnancies with threatened premature labor.
Collapse
Affiliation(s)
- Rafał Rzepka
- Department of Obstetrics and Gynecology, Pomeranian Medical University, Al. Powstańców Wielkopolskich 72, 70-111, Szczecin, Poland.
| | - Barbara Dołęgowska
- Department of Laboratory Diagnostics and Molecular Medicine, Pomeranian Medical University, Al. Powstańców Wielkopolskich 72, 70-111, Szczecin, Poland.
| | - Daria Sałata
- Department of Laboratory Diagnostics and Molecular Medicine, Pomeranian Medical University, Al. Powstańców Wielkopolskich 72, 70-111, Szczecin, Poland.
| | - Aleksandra Rajewska
- Department of Obstetrics and Gynecology, Pomeranian Medical University, Al. Powstańców Wielkopolskich 72, 70-111, Szczecin, Poland.
| | - Marta Budkowska
- Department of Laboratory Diagnostics and Molecular Medicine, Pomeranian Medical University, Al. Powstańców Wielkopolskich 72, 70-111, Szczecin, Poland.
| | - Leszek Domański
- Department of Nephrology, Transplantology and Internal Medicine, Pomeranian Medical University, Al. Powstańców Wielkopolskich 72, 70-111, Szczecin, Poland.
| | - Sebastian Kwiatkowski
- Department of Obstetrics and Gynecology, Pomeranian Medical University, Al. Powstańców Wielkopolskich 72, 70-111, Szczecin, Poland.
| | - Wioletta Mikołajek-Bedner
- Department of Obstetrics and Gynecology, Pomeranian Medical University, Al. Powstańców Wielkopolskich 72, 70-111, Szczecin, Poland.
| | - Andrzej Torbé
- Department of Obstetrics and Gynecology, Pomeranian Medical University, Al. Powstańców Wielkopolskich 72, 70-111, Szczecin, Poland.
| |
Collapse
|