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El-Halaby H, Bakr A, Eid R, Abdalla HA, Hamdy N, Shamekh N, Adel A, El-Husseiny A. Edema in childhood nephrotic syndrome: possible genes-hormones interplay. J Genet Eng Biotechnol 2022; 20:30. [PMID: 35181806 PMCID: PMC8857332 DOI: 10.1186/s43141-022-00310-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 01/30/2022] [Indexed: 11/25/2022]
Abstract
Background The role of atrial natriuretic peptide (ANP) in edema formation in idiopathic nephrotic syndrome (INS) was studied before with conflicting results reported; however, the possible contribution of genes regulating ANP expression and receptors was never explored. Methods One hundred children (60 with active INS and 40 in remission) were studied for plasma atrial natriuretic peptide (ANP), urinary sodium, ANP gene A2843G and ScaI polymorphisms, and natriuretic peptide receptor clearance C (-55) A polymorphism. For comparative purposes, 20 healthy controls were studied for ANP levels. Results ANP was higher in active compared to remission patients (p<0.001). ANP in the healthy control group was significantly lower than the ANP level of active INS (during edema) group (p=0.009) but did not show significant differences when compared to ANP levels of either active INS group after resolution of edema or remission group (p= 0.42 and 0.56, respectively). Urinary sodium levels in edematous patients were significantly lower while ANP levels were significantly higher during edema than after resolution (p< 0.001 for both). Genotypes’ frequencies of studied polymorphisms did not differ between active and remission groups. Patients with the A1A1 genotype of ScaI polymorphism had higher ANP levels compared to other genotypes (p =0.01). Conclusions During edema, ANP levels are elevated in INS children however this increment is not associated with natriuresis suggesting a blunted renal response to ANP. Polymorphisms of genes regulating ANP levels and receptors don’t seem to be implicated in edema formation except for the A1A1 genotype of ScaI polymorphism however, its possible role needs further evaluation.
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Affiliation(s)
- Hanan El-Halaby
- Pediatric Intensive Care Unit, Pediatrics Department, Mansoura University Children's Hospital, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Ashraf Bakr
- Pediatric Nephrology Unit, Pediatrics Department, Mansoura University Children's Hospital, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Riham Eid
- Pediatric Nephrology Unit, Pediatrics Department, Mansoura University Children's Hospital, Faculty of Medicine, Mansoura University, Mansoura, Egypt.
| | | | - Nashwa Hamdy
- Pediatric Nephrology Unit, Pediatrics Department, Mansoura University Children's Hospital, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Nora Shamekh
- Pediatrics Department, Mansoura University Children's Hospital, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Amira Adel
- Pediatrics Department, Mansoura University Children's Hospital, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Ahmed El-Husseiny
- Pediatric Intensive Care Unit, Pediatrics Department, Mansoura University Children's Hospital, Faculty of Medicine, Mansoura University, Mansoura, Egypt
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Albani S, Mesin L, Roatta S, De Luca A, Giannoni A, Stolfo D, Biava L, Bonino C, Contu L, Pelloni E, Attena E, Russo V, Antonini-Canterin F, Pugliese NR, Gallone G, De Ferrari GM, Sinagra G, Scacciatella P. Inferior Vena Cava Edge Tracking Echocardiography: A Promising Tool with Applications in Multiple Clinical Settings. Diagnostics (Basel) 2022; 12:427. [PMID: 35204518 PMCID: PMC8871248 DOI: 10.3390/diagnostics12020427] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 01/29/2022] [Indexed: 01/25/2023] Open
Abstract
Ultrasound (US)-based measurements of the inferior vena cava (IVC) diameter are widely used to estimate right atrial pressure (RAP) in a variety of clinical settings. However, the correlation with invasively measured RAP along with the reproducibility of US-based IVC measurements is modest at best. In the present manuscript, we discuss the limitations of the current technique to estimate RAP through IVC US assessment and present a new promising tool developed by our research group, the automated IVC edge-to-edge tracking system, which has the potential to improve RAP assessment by transforming the current categorical classification (low, normal, high RAP) in a continuous and precise RAP estimation technique. Finally, we critically evaluate all the clinical settings in which this new tool could improve current practice.
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Affiliation(s)
- Stefano Albani
- Division of Cardiology, Umberto Parini Regional Hospital, 11100 Aosta, Italy; (L.B.); (C.B.); (L.C.); (E.P.); (P.S.)
- Cardio-Thoraco-Vascular Department, Division of Cardiology and Postgraduate School in Cardiovascular Sciences, University of Trieste, 34127 Trieste, Italy; (A.D.L.); (D.S.); (G.S.)
| | - Luca Mesin
- Mathematical Biology & Physiology, Department of Electronics and Telecommunications, Politecnico di Torino, 10129 Torino, Italy;
| | - Silvestro Roatta
- Integrative Physiology Lab, Department of Neuroscience, University of Turin, 10125 Turin, Italy;
| | - Antonio De Luca
- Cardio-Thoraco-Vascular Department, Division of Cardiology and Postgraduate School in Cardiovascular Sciences, University of Trieste, 34127 Trieste, Italy; (A.D.L.); (D.S.); (G.S.)
| | - Alberto Giannoni
- Scuola Superiore Sant’Anna, 56127 Pisa, Italy;
- Fondazione Toscana G. Monasterio, 56124 Pisa, Italy
| | - Davide Stolfo
- Cardio-Thoraco-Vascular Department, Division of Cardiology and Postgraduate School in Cardiovascular Sciences, University of Trieste, 34127 Trieste, Italy; (A.D.L.); (D.S.); (G.S.)
| | - Lorenza Biava
- Division of Cardiology, Umberto Parini Regional Hospital, 11100 Aosta, Italy; (L.B.); (C.B.); (L.C.); (E.P.); (P.S.)
| | - Caterina Bonino
- Division of Cardiology, Umberto Parini Regional Hospital, 11100 Aosta, Italy; (L.B.); (C.B.); (L.C.); (E.P.); (P.S.)
| | - Laura Contu
- Division of Cardiology, Umberto Parini Regional Hospital, 11100 Aosta, Italy; (L.B.); (C.B.); (L.C.); (E.P.); (P.S.)
| | - Elisa Pelloni
- Division of Cardiology, Umberto Parini Regional Hospital, 11100 Aosta, Italy; (L.B.); (C.B.); (L.C.); (E.P.); (P.S.)
| | - Emilio Attena
- Department of Translational Medical Sciences, University of Campania Luigi Vanvitelli-Monaldi Hospital—A.O.R.N. Dei Colli, 80131 Naples, Italy; (E.A.); (V.R.)
| | - Vincenzo Russo
- Department of Translational Medical Sciences, University of Campania Luigi Vanvitelli-Monaldi Hospital—A.O.R.N. Dei Colli, 80131 Naples, Italy; (E.A.); (V.R.)
| | | | | | - Guglielmo Gallone
- Division of Cardiology, Città della Salute e della Scienza, University of Turin, 10124 Turin, Italy; (G.G.); (G.M.D.F.)
| | - Gaetano Maria De Ferrari
- Division of Cardiology, Città della Salute e della Scienza, University of Turin, 10124 Turin, Italy; (G.G.); (G.M.D.F.)
| | - Gianfranco Sinagra
- Cardio-Thoraco-Vascular Department, Division of Cardiology and Postgraduate School in Cardiovascular Sciences, University of Trieste, 34127 Trieste, Italy; (A.D.L.); (D.S.); (G.S.)
| | - Paolo Scacciatella
- Division of Cardiology, Umberto Parini Regional Hospital, 11100 Aosta, Italy; (L.B.); (C.B.); (L.C.); (E.P.); (P.S.)
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Sinha A, Bagga A, Banerjee S, Mishra K, Mehta A, Agarwal I, Uthup S, Saha A, Mishra OP. Steroid Sensitive Nephrotic Syndrome: Revised Guidelines. Indian Pediatr 2021; 58:461-481. [PMID: 33742610 PMCID: PMC8139225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
JUSTIFICATION Steroid sensitive nephrotic syndrome (SSNS) is one of the most common chronic kidney diseases in children. These guidelines update the existing Indian Society of Pediatric Nephrology recommendations on its management. OBJECTIVE To frame revised guidelines on diagnosis, evaluation, management and supportive care of patients with the illness. PROCESS The guidelines combine evidence-based recommendations and expert opinion. Formulation of key questions was followed by review of literature and evaluation of evidence by experts in two face-to-face meetings. RECOMMENDATIONS The initial statements provide advice for evaluation at onset and follow up and indications for kidney biopsy. Subsequent statements provide recommendations for management of the first episode of illness and of disease relapses. Recommendations on the use of immunosuppressive strategies in patients with frequent relapses and steroid dependence are accompanied by suggestions for step-wise approach and plan of monitoring. Guidance is also provided regarding the management of common complications including edema, hypovolemia and serious infections. Advice on immunization and transition of care is given. The revised guideline is intended to improve the management and outcomes of patients with SSNS, and provide directions for future research.
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Affiliation(s)
- Aditi Sinha
- Division of Nephrology, Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Arvind Bagga
- Division of Nephrology, Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India. Correspondence to: Dr. Arvind Bagga, Division of Nephrology, Department of Pediatrics, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110029, India.
| | | | - Kirtisudha Mishra
- Department of Pediatrics, Chacha Nehru Bal Chikitsalaya, Delhi, India
| | - Amarjeet Mehta
- Department of Pediatrics, Sawai Man Singh Medical College, Jaipur, India
| | - Indira Agarwal
- Department of Pediatrics, Christian Medical College, Vellore, India
| | - Susan Uthup
- Department of Pediatrics, Trivandrum Medical College, Thiruvananthapuram, India
| | - Abhijeet Saha
- Department of Pediatrics, Lady Hardinge Medical College, New Delhi, India
| | - Om Prakash Mishra
- Department of Pediatrics, Institute of Medical Sciences, Benaras Hindu University, Varanasi, India
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Sinha A, Bagga A, Banerjee S, Mishra K, Mehta A, Agarwal I, Uthup S, Saha A, Mishra OP. Steroid Sensitive Nephrotic Syndrome: Revised Guidelines. Indian Pediatr 2021. [PMID: 33742610 PMCID: PMC8139225 DOI: 10.1007/s13312-021-2217-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Justification Steroid sensitive nephrotic syndrome (SSNS) is one of the most common chronic kidney diseases in children. These guidelines update the existing Indian Society of Pediatric Nephrology recommendations on its management. Objective To frame revised guidelines on diagnosis, evaluation, management and supportive care of patients with the illness. Process The guidelines combine evidence-based recommendations and expert opinion. Formulation of key questions was followed by review of literature and evaluation of evidence by experts in two face-to-face meetings. Recommendations The initial statements provide advice for evaluation at onset and follow up and indications for kidney biopsy. Subsequent statements provide recommendations for management of the first episode of illness and of disease relapses. Recommendations on the use of immunosuppressive strategies in patients with frequent relapses and steroid dependence are accompanied by suggestions for step-wise approach and plan of monitoring. Guidance is also provided regarding the management of common complications including edema, hypovolemia and serious infections. Advice on immunization and transition of care is given. The revised guideline is intended to improve the management and outcomes of patients with SSNS, and provide directions for future research.
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Affiliation(s)
- Aditi Sinha
- Division of Nephrology, Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Arvind Bagga
- Division of Nephrology, Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India. Correspondence to: Dr. Arvind Bagga, Division of Nephrology, Department of Pediatrics, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110029, India.
| | | | - Kirtisudha Mishra
- Department of Pediatrics, Chacha Nehru Bal Chikitsalaya, Delhi, India
| | - Amarjeet Mehta
- Department of Pediatrics, Sawai Man Singh Medical College, Jaipur, India
| | - Indira Agarwal
- Department of Pediatrics, Christian Medical College, Vellore, India
| | - Susan Uthup
- Department of Pediatrics, Trivandrum Medical College, Thiruvananthapuram, India
| | - Abhijeet Saha
- Department of Pediatrics, Lady Hardinge Medical College, New Delhi, India
| | - Om Prakash Mishra
- Department of Pediatrics, Institute of Medical Sciences, Benaras Hindu University, Varanasi, India
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The role of bioelectrical impedance analysis, NT-ProBNP and inferior vena cava sonography in the assessment of body fluid volume in children with nephrotic syndrome. Nefrologia 2017; 38:48-56. [PMID: 28751054 DOI: 10.1016/j.nefro.2017.04.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 03/29/2017] [Accepted: 04/02/2017] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Assessment of volume status and differentiating "underfill" and "overfill" edema is essential in the management of patients with nephrotic syndrome (NS). OBJECTIVES Our aim was to evaluate the volume status of NS patients by using different methods and to investigate the utility of bioelectrical impedance analysis (BIA) in children with NS. METHODS The hydration status of 19 patients with NS (before treatment of NS and at remission) and 25 healthy controls was assessed by multifrequency BIA, serum N-terminal-pro-brain natriuretic peptide (NT-proBNP) levels, inferior vena cava (IVC) diameter, left atrium diameter (LAD) and vasoactive hormones. RESULTS Renin, aldosterone levels, IVC diameter and LAD were not statistically different between the groups. NT-proBNP values were statistically higher in the attack period compared to remission and the control group (p=0.005 for each). Total body water (TBW), overhydration (OH) and extracellular water (ECW) estimated by the BIA measurement in the attack group was significantly higher than that of the remission group and controls. There were no significant correlations among volume indicators in group I and group II. However, significant correlations were observed between NT-proBNP and TBW/BSA (p=0.008), ECW/BSA (p=0.003) and ECW/ICW (p=0.023) in the healthy group. TBW was found to be higher in patients with NS in association with increased ECW but without any change in ICW. NT-proBNP values were higher in patients during acute attack than during remission. CONCLUSIONS Our findings support the lack of hypovolaemia in NS during acute attack. In addition, BIA is an easy-to-perform method for use in routine clinical practice to determine hydration status in patients with NS.
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Clinical practice guideline for pediatric idiopathic nephrotic syndrome 2013: general therapy. Clin Exp Nephrol 2015; 19:34-53. [DOI: 10.1007/s10157-014-1031-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Svenningsen P, Andersen H, Nielsen LH, Jensen BL. Urinary serine proteases and activation of ENaC in kidney--implications for physiological renal salt handling and hypertensive disorders with albuminuria. Pflugers Arch 2014; 467:531-42. [PMID: 25482671 DOI: 10.1007/s00424-014-1661-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 11/21/2014] [Accepted: 11/25/2014] [Indexed: 12/21/2022]
Abstract
Serine proteases, both soluble and cell-attached, can activate the epithelial sodium channel (ENaC) proteolytically through release of a putative 43-mer inhibitory tract from the ectodomain of the γ-subunit. ENaC controls renal Na(+) excretion and loss-of-function mutations lead to low blood pressure, while gain-of-function mutations lead to impaired Na(+) excretion, hypertension, and hypokalemia. We review an emerging pathophysiological concept that aberrant glomerular filtration of plasma proteases, e.g., plasmin, prostasin, and kallikrein, contributes to proteolytic activation of ENaC, both in acute conditions with proteinuria, like nephrotic syndrome and preeclampsia, and in chronic diseases, such as diabetes with microalbuminuria. A vast literature on renin-angiotensin-aldosterone system and volume homeostasis from the last four decades show a number of common characteristics for conditions with albuminuria compatible with impaired renal Na(+) excretion: hypertension and volume retention is secondary to proteinuria in, e.g., preeclampsia and nephrotic syndrome; plasma concentrations of renin, angiotensin II, and aldosterone are frequently suppressed in proteinuric conditions, e.g., preeclampsia and diabetic nephropathy; blood pressure is salt-sensitive in conditions with microalbuminuria/proteinuria; and extracellular volume is expanded, plasma atrial natriuretic peptide (ANP) concentration is increased, and diuretics, like amiloride and spironolactone, are effective blood pressure-reducing add-ons. Active plasmin in urine has been demonstrated in diabetes, preeclampsia, and nephrosis. Urine from these patients activates, plasmin-dependently, amiloride-sensitive inward current in vitro. The concept predicts that patients with albuminuria may benefit particularly from reduced salt intake with RAS blockers; that distally acting diuretics, in particular amiloride, are warranted in low-renin/albuminuric conditions; and that urine serine proteases and their activators may be pharmacological targets.
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Affiliation(s)
- Per Svenningsen
- Department of Cardiovascular and Renal Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
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Andersen RF, Buhl KB, Jensen BL, Svenningsen P, Friis UG, Jespersen B, Rittig S. Remission of nephrotic syndrome diminishes urinary plasmin content and abolishes activation of ENaC. Pediatr Nephrol 2013; 28:1227-34. [PMID: 23503750 DOI: 10.1007/s00467-013-2439-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Revised: 01/31/2013] [Accepted: 02/04/2013] [Indexed: 12/12/2022]
Abstract
BACKGROUND Urinary plasmin activates the epithelial Na(+) channel (ENaC) in vitro and may possibly be a mechanism of sodium retention in nephrotic syndrome (NS). This study used a paired design to test the hypothesis that remission of NS is associated with a decreased content of urinary plasmin and reduced ability of patients' urine to activate ENaC. METHODS Samples were collected during active NS and at stable remission from 20 patients with idiopathic NS, aged 9.1 ± 3.2 years. Plasminogen-plasmin concentration was measured with an enzyme-linked immunosorbent assay. Western immunoblotting for plasminogen-plasmin was performed in paired urine samples. The patch clamp technique was used to test the ability of urine to evoke an inward current on collecting duct cells and human lymphocytes. RESULTS The urinary plasminogen-plasmin/creatinine ratio was 226 [95 % confidence interval (CI) 130-503] μg/mmol in nephrotic urine versus 9.5 (95 % CI 8-12) μg/mmol at remission (p < 0.001). Western immunoblotting confirmed the presence of active plasmin in urine collected during active NS, while samples collected at remission were negative. Nephrotic urine generated an inward amiloride- and α2-anti-plasmin- sensitive current, whereas the observed increase in current in urine collected at remission was significantly lower (201 ± 31 vs. 29 ± 10 %; p = 0.005). CONCLUSIONS These findings support the hypothesis that aberrantly filtered plasminogen-plasmin may contribute to ENaC activation and mediate primary renal sodium retention during active childhood NS.
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Affiliation(s)
- René F Andersen
- Pediatric Research Laboratory, Department of Pediatrics, Aarhus University Hospital, Skejby, Aarhus N, 8200, Denmark.
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