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Lengyel A, Kosik A, Pinti É, Lódi C, Tory K, Fekete G, Haltrich I. [Trisomy 9p and clinical heterogeneity: case report of an unusual presentation]. Orv Hetil 2018; 159:1994-2000. [PMID: 30474384 DOI: 10.1556/650.2018.31223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Whole or partial trisomy of the short arm of chromosome 9 (9p) is considered to be one of the more frequent chromosome abnormalities compatible with life. The duplication may affect various organs, however the most common symptoms are certain specific facial dysmorphisms and abnormalities of the fingers, toes and nails. A one month old boy presented with failure to thrive, jaundice, ventricular septal defect (VSD) and dysmorphic face. He displayed symptoms of heart failure. The cardiologic examination revealed a significant VSD, hypoplasia of the aortic arch, pulmonary hypertension, decompensated circulatory failure and moderate left ventricle dysfunction. Routine cytogenetic analysis revealed a supernumerary marker chromosome. Fluorescence in situ hybridization (FISH) identified this as the short arm of chromosome 9. The child's karyotype was determined as 47,XY,+der(9)dup(9)(p10p24)dn. Due to his worsening condition and the high risk of the operation, it was decided to forego the procedure. After a short palliative care the child passed away. The child's clinical presentation and the uncharacteristic severity of his condition show that chromosome abnormalities involving duplicated genetic material are extremely heterogeneous. Thus treatment of each child should be individualized and may also involve difficult ethical considerations. Orv Hetil. 2018; 159(47): 1994-2000.
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Affiliation(s)
- Anna Lengyel
- II. Gyermekgyógyászati Klinika, Genetikai Részleg, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest, Pf. 2., 1428
| | - Anna Kosik
- I. Gyermekgyógyászati Klinika, Intenzív Terápiás Osztály, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest
| | - Éva Pinti
- II. Gyermekgyógyászati Klinika, Genetikai Részleg, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest, Pf. 2., 1428
| | - Csaba Lódi
- I. Gyermekgyógyászati Klinika, Intenzív Terápiás Osztály, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest
| | - Kálmán Tory
- I. Gyermekgyógyászati Klinika, MTA-SE Lendület Nephrogenetikai Kutatócsoport, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest
| | - György Fekete
- II. Gyermekgyógyászati Klinika, Genetikai Részleg, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest, Pf. 2., 1428
| | - Irén Haltrich
- II. Gyermekgyógyászati Klinika, Genetikai Részleg, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest, Pf. 2., 1428
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Csohány R, Prókai Á, Sziksz E, Balicza-Himer L, Pap D, Kosik A, Sugár D, Vannay Á, Kis-Petik K, Fekete A, Szabó AJ. Sex differences in renin response and changes of capillary diameters after renal ischemia/reperfusion injury. Pediatr Transplant 2016; 20:619-26. [PMID: 27090360 DOI: 10.1111/petr.12712] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/25/2016] [Indexed: 01/18/2023]
Abstract
Activation of the RAS has a crucial role in the progression of ischemia/reperfusion-associated CAD. The regulation of RAS differs in the two genders. However, the extent of gender differences and locations of renin production have not been revealed yet. We investigated in vivo the local renin production in the two genders during ischemia/reperfusion injury. In male and female Wistar rats, renal ischemia was induced followed by a reperfusion period of two, eight, 16, 24, or 48 h. We applied flow cytometry to measure renin content and multiphoton imaging to visualize renin granules and changes of peritubular diameters in vivo during ischemia/reperfusion. Renin content decreased in CD in the first eight h of reperfusion; however, after 16 h, its amount increased. In males, the production of renin was more pronounced, and the duration of vasoconstriction was longer with a subsequent phase of vessel hyperdilation compared to females. Renal ischemia/reperfusion injury induces renin response not only in the JGA, but also in the CD segment. Renin production is more explicit in males than in females which, via increased angiotensin II production, might explain the different dynamism of renal vessel regulation between the two genders.
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Affiliation(s)
- Rózsa Csohány
- Ist Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Ágnes Prókai
- Ist Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Erna Sziksz
- Ist Department of Pediatrics, Semmelweis University, Budapest, Hungary.,MTA-SE Pediatrics and Nephrology Research Group, Budapest, Hungary
| | | | - Domonkos Pap
- Ist Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Anna Kosik
- Ist Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Dániel Sugár
- Ist Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Ádám Vannay
- Ist Department of Pediatrics, Semmelweis University, Budapest, Hungary.,MTA-SE Pediatrics and Nephrology Research Group, Budapest, Hungary
| | - Katalin Kis-Petik
- Institute of Biophysics and Radiational Biology, Semmelweis University, Budapest, Hungary.,MTA-SE Molecular Biophysics Research Group, Budapest, Hungary
| | - Andrea Fekete
- Ist Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Attila J Szabó
- Ist Department of Pediatrics, Semmelweis University, Budapest, Hungary.,MTA-SE Pediatrics and Nephrology Research Group, Budapest, Hungary
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Csohány R, Prókai A, Kosik A, Szabó JA. [The cortical collecting duct plays a pivotal role in the kidney's local renin-angiotensin system]. Orv Hetil 2013; 154:643-9. [PMID: 23608311 DOI: 10.1556/oh.2013.29597] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The renin-angiotensin system is one of the most important hormone systems in the body, and the regulations as well as the role in the juxtaglomerular apparatus are well known. The present review focuses on renin secretion in a recently described localization, the cortical collecting duct. The authors display it in parallel of the copying strategy of an adult and a developing kidney. Furthermore, based on different animal studies it highlights the local role of renin released from the collecting duct. In chronic angiotensin II-infused, 2-kidney, 1-clip hypertensive model as well as in diabetic rats the major source of (pro)renin is indeed the collecting duct. In this localization this hormone can reach both the systemic circulation and the interstitial renin-angiotensin system components including the newly described (pro)renin receptor, by which (pro)renin is able to locally activate pro-fibrotic intracellular signal pathways. Consequently, one can postulate that in the future renin may serve either as a new therapeutic target in nephropathy associated with both hypertension and diabetes or as an early diagnostic marker in chronic diseases leading to nephropathy.
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Affiliation(s)
- Rózsa Csohány
- Semmelweis Egyetem, Általános Orvostudományi Kar, I. Gyermekgyógyászati Klinika és MTA Nefrológiai Kutatólaboratórium, Budapest, Bókay J. u. 53. 1083
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