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Reidy KJ, Guillet R, Selewski DT, Defreitas M, Stone S, Starr MC, Harer MW, Todurkar N, Vuong KT, Gogcu S, Askenazi D, Tipple TE, Charlton JR. Advocating for the inclusion of kidney health outcomes in neonatal research: best practice recommendations by the Neonatal Kidney Collaborative. J Perinatol 2024:10.1038/s41372-024-02030-1. [PMID: 38969825 DOI: 10.1038/s41372-024-02030-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/21/2024] [Accepted: 06/06/2024] [Indexed: 07/07/2024]
Abstract
Acute kidney injury (AKI) occurs in nearly 30% of sick neonates. Chronic kidney disease (CKD) can be detected in certain populations of sick neonates as early as 2 years. AKI is often part of a multisystem syndrome that negatively impacts developing organs resulting in short- and long-term pulmonary, neurodevelopmental, and cardiovascular morbidities. It is critical to incorporate kidney-related data into neonatal clinical trials in a uniform manner to better understand how neonatal AKI or CKD could affect an outcome of interest. Here, we provide expert opinion recommendations and rationales to support the inclusion of short- and long-term neonatal kidney outcomes using a tiered approach based on study design: (1) observational studies (prospective or retrospective) limited to data available within a center's standard practice, (2) observational studies involving prospective data collection where prespecified kidney outcomes are included in the design, (3) interventional studies with non-nephrotoxic agents, and (4) interventional studies with known nephrotoxic agents. We also provide recommendations for biospecimen collection to facilitate ancillary kidney specific research initiatives. This approach balances the costs of AKI and CKD ascertainment with knowledge gained. We advocate that kidney outcomes be included routinely in neonatal clinical study design. Consistent incorporation of kidney outcomes across studies will increase our knowledge of neonatal morbidity.
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Affiliation(s)
- Kimberly J Reidy
- Division of Nephrology, Department of Pediatrics, Children's Hospital at Montefiore/Albert Einstein College of Medicine, Bronx, NY, 10467, USA
| | - Ronnie Guillet
- Division of Neonatology, Golisano Children's Hospital, University of Rochester, Rochester, NY, USA
| | - David T Selewski
- Division of Nephrology, Department of Pediatrics, Medical University of South Carolina, Charleston, SC, USA
| | - Marissa Defreitas
- Division of Nephrology, Department of Pediatrics, University of Miami/Holtz Children's Hospital, Miami, FL, USA
| | - Sadie Stone
- Department of Pharmacy, Children's of Alabama, Birmingham, AL, UK
| | - Michelle C Starr
- Division of Pediatric Nephrology, Division of Child Health Service Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Matthew W Harer
- Division of Neonatology, Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Namrata Todurkar
- Division of Neonatal Perinatal Medicine, Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
| | - Kim T Vuong
- Division of Pediatric Nephrology, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Semsa Gogcu
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, Wake Forest University School of Medicine, Winston-Salem, NC, USA
| | - David Askenazi
- Division of Nephrology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, UK
| | - Trent E Tipple
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Jennifer R Charlton
- Division of Nephrology, Department of Pediatrics, University of Virginia, Box 800386, Charlottesville, VA, 22903, USA.
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Han SY, Kim YH. Microalbuminuria and Functional Iron Deficiency are Risk Factors for Hearing Loss in Adolescents. Laryngoscope 2024; 134:3329-3334. [PMID: 38314940 DOI: 10.1002/lary.31317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 01/05/2024] [Accepted: 01/12/2024] [Indexed: 02/07/2024]
Abstract
OBJECTIVES Renal impairment and some systemic diseases are associated with hearing loss (HL) in adults. However, studies of these relationship in adolescents are rare. The objective of this study was to determine the association between HL and renal or systemic disease in adolescents. METHODS Subjects were extracted from the 5th Korea National Health and Nutrition Examination Survey from 2011 to 2012. We included adolescents aged 10-19 years old with normal tympanic membrane and those who underwent a physical and laboratory examination and pure tone audiometry. HL, high-frequency hearing loss (HFHL), albuminuria, impaired glomerular filtration rate, hypertension, diabetes, and obesity were evaluated based on the data. RESULTS Individuals with microalbuminruia (MIA) exhibited higher prevalence of HL (p = 0.003) and HFHL (p = 0.012) than those without MIA. The prevalence of HL and HFHL appeared to increase according to the severity of albuminuria. Additionally, individuals with HL or HFHL showed lower transferrin saturation (TSAT) than individuals without HL (p = 0.002) or HFHL (p = 0.001). And, HFHL was associated with lower ferritin levels (p = 0.017). HL and HFHL were related to MIA (p = 0.004 and p = 0.022, respectively) and TSAT (p = 0.005 and p = 0.011, respectively) after controlling other factors. CONCLUSION MIA and TSAT level were independently associated with the HL and HFHL. Since MIA can be easily detected by dipstick test and urine analysis, hearing evaluations for individuals with MIA might be helpful to identify hearing impairments earlier in adolescents. LEVEL OF EVIDENCE 3 (individual cross-sectional study) Laryngoscope, 134:3329-3334, 2024.
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Affiliation(s)
- Sang-Yoon Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, South Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul, South Korea
| | - Young Ho Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, South Korea
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Ríos-Barnés M, Velasco-Arnaiz E, Fortuny C, Benavides M, Baquero-Artigao F, Muga O, Del Valle R, Frick MA, Bringué X, Herrero S, Vilas J, Alonso-Ojembarrena A, Castells-Vilella L, Rojo P, Blázquez-Gamero D, Esteva C, Sánchez E, Alarcón A, Noguera-Julian A. Renal Function Impairment in Children With Congenital Cytomegalovirus Infection: A Cross-sectional Study. Pediatr Infect Dis J 2024; 43:257-262. [PMID: 38063508 DOI: 10.1097/inf.0000000000004176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
BACKGROUND We aimed to determine the prevalence and severity of glomerular and tubular renal dysfunction by means of urinalysis in infants and toddlers with congenital cytomegalovirus infection (cCMV) and their association with cCMV disease, viruria and antiviral treatment. METHODS This cross-sectional study was done using the Spanish Registry of Congenital Cytomegalovirus Infection. First-morning urine samples were collected from January 2016 to December 2018 from patients <5 years old enrolled in Spanish Registry of Congenital Cytomegalovirus Infection. Samples were excluded in case of fever or other signs or symptoms consistent with acute infection, bacteriuria or bacterial growth in urine culture. Urinary protein/creatinine and albumin/creatinine ratios, urinary beta-2-microglobulin levels, hematuria and CMV viruria were determined. A 0.4 cutoff in the urinary albumin/protein ratio was used to define tubular (<0.4) or glomerular (>0.4) proteinuria. Signs and symptoms of cCMV at birth, the use of antivirals and cCMV-associated sequelae at last available follow-up were obtained from Spanish Registry of Congenital Cytomegalovirus Infection. RESULTS Seventy-seven patients (37 females, 48.1%; median [interquartile range] age: 14.0 [4.4-36.2] months) were included. Symptom-free elevated urinary protein/creatinine and albumin/creatinine ratios were observed in 37.5% and 41.9% of patients, respectively, with tubular proteinuria prevailing (88.3%) over glomerular proteinuria (11.6%). Proteinuria in the nephrotic range was not observed in any patients. In multivariate analysis, female gender was the only risk factor for tubular proteinuria (adjusted odds ratio = 3.339, 95% confidence interval: 1.086-10.268; P = 0.035). cCMV disease at birth, long-term sequelae, viruria or the use of antivirals were not associated with urinalysis findings. CONCLUSIONS Mild nonsymptomatic tubular proteinuria affects approximately 40% of infants and toddlers with mostly symptomatic cCMV in the first 5 years of life.
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Affiliation(s)
- María Ríos-Barnés
- From the Infectious Diseases and Systemic Inflammatory Response in Pediatrics, Pediatric Infectious Diseases Department, Institut de Recerca Sant Joan de Déu, Barcelona, Spain
| | - Eneritz Velasco-Arnaiz
- From the Infectious Diseases and Systemic Inflammatory Response in Pediatrics, Pediatric Infectious Diseases Department, Institut de Recerca Sant Joan de Déu, Barcelona, Spain
| | - Clàudia Fortuny
- From the Infectious Diseases and Systemic Inflammatory Response in Pediatrics, Pediatric Infectious Diseases Department, Institut de Recerca Sant Joan de Déu, Barcelona, Spain
- Centre for Biomedical Network Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain
- Departament de Cirurgia i Especialitats Medicoquirúrgiques, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Barcelona, Spain
- Translational Research Network in Pediatric Infectious Diseases (RITIP)
| | - Marta Benavides
- Pediatric Infectious Diseases Unit, Hospital Universitario La Paz
| | - Fernando Baquero-Artigao
- Pediatric Infectious Diseases Unit, Hospital Universitario La Paz
- La Paz Research Institute (IdiPAZ), Universidad Autónoma de Madrid (UAM)
- Centro de Investigación Biomédica en Red en Enfermedades Infecciosas (CIBERINFEC), Madrid, Spain
| | - Oihana Muga
- Department of Pediatrics, Hospital de Donostia, San Sebastián, Spain
| | - Rut Del Valle
- Department of Pediatrics, Hospital Infanta Sofía, Madrid, Spain
| | - Marie Antoinette Frick
- Pediatric Infectious Diseases and Immunodeficiencies Unit, Hospital Universitari Vall d'Hebron, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, Spain
| | - Xavier Bringué
- Department of Pediatrics and Neonatal Unit, Hospital Universitario Arnau de Vilanova, Lleida, Spain
| | - Susana Herrero
- Department of Pediatrics, Hospital Sant Llàtzer, Palma de Mallorca, Spain
| | - Javier Vilas
- Department of Pediatrics, Hospital de Pontevedra, Pontevedra, Spain
| | - Almudena Alonso-Ojembarrena
- Neonatal Intensive Care Unit, Biomedical Research and Innovation Institute of Cádiz (INiBICA), Research Unit, Hospital Puerta del Mar, Cádiz, Spain
| | - Laura Castells-Vilella
- Department of Pediatrics and Neonatal Unit, Hospital General de Cataluña, Barcelona, Spain
| | - Pablo Rojo
- Pediatric Infectious Diseases Unit, Hospital Universitario 12 de Octubre, Universidad Complutense, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Daniel Blázquez-Gamero
- Pediatric Infectious Diseases Unit, Hospital Universitario 12 de Octubre, Universidad Complutense, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Cristina Esteva
- Centre for Biomedical Network Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain
- Molecular Microbiology Unit, Hospital Universitari Sant Joan de Déu
| | | | - Ana Alarcón
- Departament de Cirurgia i Especialitats Medicoquirúrgiques, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Barcelona, Spain
- Department of Neonatology, Hospital Sant Joan de Déu, Neonatal Brain Group, Institut de Recerca Sant Joan de Déu, Barcelona, Spain
| | - Antoni Noguera-Julian
- From the Infectious Diseases and Systemic Inflammatory Response in Pediatrics, Pediatric Infectious Diseases Department, Institut de Recerca Sant Joan de Déu, Barcelona, Spain
- Centre for Biomedical Network Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain
- Departament de Cirurgia i Especialitats Medicoquirúrgiques, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Barcelona, Spain
- Translational Research Network in Pediatric Infectious Diseases (RITIP)
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Vanden Eynde N, Koshy P, De Somer L, Knops N. Lessons for the clinical nephrologist: an unusual cause of isolated proteinuria in a child with Familial Mediterranean Fever. J Nephrol 2023:10.1007/s40620-023-01619-7. [PMID: 37036663 DOI: 10.1007/s40620-023-01619-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 03/03/2023] [Indexed: 04/11/2023]
Affiliation(s)
- Nathalie Vanden Eynde
- Department of Pediatrics, UZLeuven, Herestraat 49, 3000, Leuven, Belgium.
- Centre for Medical Genetics, Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Laarbeeklaan 101, 1090, Jette, Brussels, Belgium.
| | - Priyanka Koshy
- Department of Anatomopathology, UZLeuven, Herestraat 49, 3000, Leuven, Belgium
| | - Lien De Somer
- Department of Pediatric Rheumatology, UZLeuven, Herestraat 49, 3000, Leuven, Belgium
| | - Noël Knops
- Department of Pediatric Nephrology, UZLeuven, Herestraat 49, 3000, Leuven, Belgium
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Ndongo A, Ranchin B, Cartier R, Bertholet-Thomas A, Bacchetta J, Cochat P. Are plasma proteins a valid alternative for assessing nephrotic syndrome in children from low-income countries? Arch Pediatr 2022; 29:263-266. [DOI: 10.1016/j.arcped.2022.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 01/31/2022] [Accepted: 02/20/2022] [Indexed: 12/23/2022]
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Brief Report: Subclinical Kidney Dysfunction in HIV-Infected Children: A Cross-Sectional Study. J Acquir Immune Defic Syndr 2021; 85:470-474. [PMID: 33136747 DOI: 10.1097/qai.0000000000002470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Most of the kidney dysfunction in HIV-positive children receiving antiretroviral therapy (ART) is attributed to tenofovir. There is a paucity of data on kidney dysfunction in tenofovir-naive children. The primary objective was to know the point prevalence of albuminuria and β2-microglobulinuria in HIV-infected children aged 3-18 years receiving ART. Albuminuria and β2-microglobulinuria were used as surrogates for glomerular and tubular dysfunction, respectively. The secondary objective was to determine their predictors. DESIGN Cross-sectional study-design. METHODS One hundred consecutive HIV-positive children (3-18 years) on ART were included. Spot urine sample was analyzed for urinary creatinine, total protein, microalbumin, and β2-microglobulin. Albuminuria was defined as albumin to creatinine ratio of >30 mg/g; proteinuria as urine dipstick ≥trace or spot urine protein to creatinine ratio (uPCR) of ≥0.2. β2-microglobulinuria was defined as β2-microglobulin levels of >350 µg/L. RESULTS There were 71 boys and 29 girls. Most of the children had WHO clinical stage I and were getting zidovudine-based regimen. Only 7 children were getting tenofovir. estimated Glomerular Filtration Rate and serum creatinine were normal in all children. Approximately half (48%) had renal dysfunction in the form of glomerular dysfunction (26%), tubular dysfunction (27%), or both (5%). Age at diagnosis was significantly associated with β2-microglobulinuria (P = 0.044). None of the selected variables were associated with albuminuria. CONCLUSIONS HIV-associated glomerular and tubular dysfunction is common in children receiving ART other than tenofovir. The standard guidelines should consider including routine urinary biomarker monitoring in children on ART.
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Mechanism Underlying Selective Albuminuria in Minimal Change Nephrotic Syndrome. Int J Nephrol 2019; 2019:5859102. [PMID: 31781392 PMCID: PMC6874928 DOI: 10.1155/2019/5859102] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 09/24/2019] [Indexed: 01/04/2023] Open
Abstract
As water and solutes are filtered through the slit membrane, it is an a priori concept that a slit membrane is an essential filtration barrier for proteins, including albumin. However, in cases of minimal change nephrotic syndrome, the number of slit membranes is reduced by the foot process effacement and tight junction-like cell adhesion. Furthermore, albumin endocytosis is enhanced in the podocytes under condition of minimal change disease, and albumin is selectively transported by the albumin receptor FcRn. Suppressing the endocytosis of albumin with anti-FcRn antibody decreases the urinary protein level. The expression of motor molecules, such as cytoplasmic dynein 1 and myosin IX, is increased in the podocytes under conditions of minimal change nephrotic syndrome, suggesting the enhanced transport of vesicles containing albumin. Podocyte vesicle transport may play an important role in the pathology of selective albuminuria in cases of nephrotic syndrome.
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Effects of Chronic Administration of Capsaicin on Biomarkers of Kidney Injury in Male Wistar Rats with Experimental Diabetes. Molecules 2018; 24:molecules24010036. [PMID: 30583465 PMCID: PMC6337195 DOI: 10.3390/molecules24010036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 12/13/2018] [Accepted: 12/18/2018] [Indexed: 02/07/2023] Open
Abstract
Capsaicin is an agonist of the transient receptor potential vanilloid type 1 (TRPV1) channel, which has been related to the pathophysiology of kidney disease secondary to diabetes. This study aimed to evaluate the chronic effect of capsaicin administration on biomarkers of kidney injury in an experimental rat model of diabetes. Male Wistar rats were assigned to four groups: (1) healthy controls without diabetes (CON), (2) healthy controls plus capsaicin at 1 mg/kg/day (CON + CAPS), (3) experimental diabetes without capsaicin (DM), and (4) experimental diabetes plus capsaicin at 1 mg/kg/day (DM + CAPS). For each group, 24-h urine samples were collected to determine diuresis, albumin, cystatin C, β2 microglobulin, epidermal growth factor (EGF), alpha (1)-acid glycoprotein, and neutrophil gelatinase-associated lipocalin (NAG-L). Blood samples were drawn to measure fasting glucose. After 8 weeks, the CON + CAPS and DM + CAPS groups showed increased diuresis compared to the CON and DM groups, but the difference was significant only in the DM + CAPS group. The two-way ANOVA only showed a statistically significant effect of CAPS on the urinary EGF levels, as well as a tendency to have a significant effect in the urinary NAG-L levels. The EGF levels decreased in both CAPS-treated groups, but the change was only significant in the CON + CAPS group vs. CON group; and the NAG-L levels were lower in both CAPS-treated groups. These results show that capsaicin had a diuretic effect in healthy and diabetic rats; additionally, it increased the urinary EGF levels and tended to decrease the urinary NAG-L levels.
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