Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 1.806
Filtrar
1.
Int J Mol Sci ; 25(13)2024 Jun 21.
Artículo en Inglés | MEDLINE | ID: mdl-38999938

RESUMEN

The purpose of this study was to evaluate the spatiotemporal immunoexpression pattern of microtubule-associated protein 1 light chain 3 beta (LC3B), glucose-regulated protein 78 (GRP78), heat shock protein 70 (HSP70), and lysosomal-associated membrane protein 2A (LAMP2A) in normal human fetal kidney development (CTRL) and kidneys affected with congenital anomalies of the kidney and urinary tract (CAKUT). Human fetal kidneys (control, horseshoe, dysplastic, duplex, and hypoplastic) from the 18th to the 38th developmental week underwent epifluorescence microscopy analysis after being stained with antibodies. Immunoreactivity was quantified in various kidney structures, and expression dynamics were examined using linear and nonlinear regression modeling. The punctate expression of LC3B was observed mainly in tubules and glomerular cells, with dysplastic kidneys displaying distinct staining patterns. In the control group's glomeruli, LAMP2A showed a sporadic, punctate signal; in contrast to other phenotypes, duplex kidneys showed significantly stronger expression in convoluted tubules. GRP78 had a weaker expression in CAKUT kidneys, especially hypoplastic ones, while normal kidneys exhibited punctate staining of convoluted tubules and glomeruli. HSP70 staining varied among phenotypes, with dysplastic and hypoplastic kidneys exhibiting stronger staining compared to controls. Expression dynamics varied among observed autophagy markers and phenotypes, indicating their potential roles in normal and dysfunctional kidney development.


Asunto(s)
Autofagia , Chaperón BiP del Retículo Endoplásmico , Proteínas HSP70 de Choque Térmico , Riñón , Proteína 2 de la Membrana Asociada a los Lisosomas , Proteínas Asociadas a Microtúbulos , Humanos , Proteína 2 de la Membrana Asociada a los Lisosomas/metabolismo , Proteína 2 de la Membrana Asociada a los Lisosomas/genética , Riñón/metabolismo , Riñón/anomalías , Riñón/patología , Proteínas Asociadas a Microtúbulos/metabolismo , Proteínas HSP70 de Choque Térmico/metabolismo , Proteínas de Choque Térmico/metabolismo , Anomalías Urogenitales/metabolismo , Anomalías Urogenitales/patología , Sistema Urinario/metabolismo , Sistema Urinario/anomalías , Reflujo Vesicoureteral/metabolismo , Reflujo Vesicoureteral/patología
2.
Genes (Basel) ; 15(6)2024 May 28.
Artículo en Inglés | MEDLINE | ID: mdl-38927638

RESUMEN

Approximately half of the cases of chronic kidney disease (CKD) in childhood are caused by congenital anomalies of the kidney and urinary tract (CAKUT). Specific genes were identified as having significant importance in regard to the underlying genetic factors responsible for the CAKUT phenotype, and in our research, we focused on analyzing and comparing the expression levels of ectodysplasin A2 receptor (EDA2R), protocadherin9 (PCDH9), and TNF receptor-associated factor 7 (TRAF7) proteins in the cortex and medulla of healthy control kidneys during developmental phases 2, 3, and 4. We also performed an analysis of the area percentages of the mentioned proteins in the cortical and medullary sections of healthy embryonic and fetal kidneys compared to those affected by CAKUT, including duplex kidneys (DK), horseshoe kidneys (HK), hypoplastic kidneys (HYP), and dysplastic kidneys (DYS). We found that the CAKUT candidate gene proteins EDA2R, PCDH9, and TRAF7 are all expressed during normal human kidney development stages. In DYS, the expression of EDA2R was higher than in normal kidneys, likely due to EDA2R's role in apoptosis, which was upregulated in specific cases and could possibly contribute to the formation of DYS. The expression of PCDH9 was lower in HK, which can be attributed to the possible role of PCDH9 in cell migration suppression. Decreased PCDH9 expression is linked to increased cell migration, potentially contributing to the development of HK. The level of TRAF7 expression was reduced in all examined kidney disorders compared to normal kidneys, suggesting that this reduction might be attributed to the crucial role of TRAF7 in the formation of endothelium and ciliogenesis, both of which are essential for normal kidney development. Further research is required to ascertain the function of these proteins in both the typical development of the kidney and in CAKUT.


Asunto(s)
Cadherinas , Riñón , Anomalías Urogenitales , Reflujo Vesicoureteral , Humanos , Cadherinas/genética , Cadherinas/metabolismo , Regulación del Desarrollo de la Expresión Génica , Riñón/metabolismo , Riñón/anomalías , Riñón/crecimiento & desarrollo , Riñón/embriología , Protocadherinas , Sistema Urinario/anomalías , Sistema Urinario/metabolismo , Anomalías Urogenitales/genética , Anomalías Urogenitales/patología , Reflujo Vesicoureteral/genética , Reflujo Vesicoureteral/patología
3.
Pediatrics ; 153(6)2024 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-38784992

RESUMEN

Technological advancements before and after delivery have greatly altered the counseling of pregnant patients facing a fetal diagnosis of severe oligohydramnios or anhydramnios secondary to congenital anomalies of the kidneys and urinary tract. Once considered a nearly uniformly lethal abnormality, long-term survival may now be possible secondary to prenatal innovations aimed at restoring the amniotic fluid volume and the availability of more advanced neonatal dialysis techniques. However, these available therapies are far from perfect. The procedures are onerous for pregnant patients without a guarantee of success, and families must prepare themselves for the complex life-long medical care that will be necessary for surviving individuals. Multidisciplinary counseling is imperative to help pregnant individuals understand the complexity of these conditions and assist them in exercising their right to informed decision-making. Moreover, as with any developing field of medicine, providers must contend with ethical questions related to the treatment options, including questions regarding patient-hood, distributive justice, and the blurred lines between research, innovation, and standard care. These ethical questions are best addressed in a multidisciplinary fashion with consideration of multiple points of view from various subspecialties. Only by seeing the entirety of the picture can we hope to best counsel patients about these highly complex situations and help navigate the most appropriate care path.


Asunto(s)
Análisis Ético , Humanos , Femenino , Embarazo , Riñón/anomalías , Sistema Urinario/anomalías , Recién Nacido , Anomalías Urogenitales/terapia , Anomalías Urogenitales/diagnóstico , Oligohidramnios/terapia , Diagnóstico Prenatal/ética
4.
Sci Rep ; 14(1): 9013, 2024 04 19.
Artículo en Inglés | MEDLINE | ID: mdl-38641713

RESUMEN

Deep learning algorithms have demonstrated remarkable potential in clinical diagnostics, particularly in the field of medical imaging. In this study, we investigated the application of deep learning models in early detection of fetal kidney anomalies. To provide an enhanced interpretation of those models' predictions, we proposed an adapted two-class representation and developed a multi-class model interpretation approach for problems with more than two labels and variable hierarchical grouping of labels. Additionally, we employed the explainable AI (XAI) visualization tools Grad-CAM and HiResCAM, to gain insights into model predictions and identify reasons for misclassifications. The study dataset consisted of 969 ultrasound images from unique patients; 646 control images and 323 cases of kidney anomalies, including 259 cases of unilateral urinary tract dilation and 64 cases of unilateral multicystic dysplastic kidney. The best performing model achieved a cross-validated area under the ROC curve of 91.28% ± 0.52%, with an overall accuracy of 84.03% ± 0.76%, sensitivity of 77.39% ± 1.99%, and specificity of 87.35% ± 1.28%. Our findings emphasize the potential of deep learning models in predicting kidney anomalies from limited prenatal ultrasound imagery. The proposed adaptations in model representation and interpretation represent a novel solution to multi-class prediction problems.


Asunto(s)
Aprendizaje Profundo , Enfermedades Renales , Sistema Urinario , Embarazo , Femenino , Humanos , Ultrasonografía Prenatal/métodos , Diagnóstico Prenatal/métodos , Enfermedades Renales/diagnóstico por imagen , Sistema Urinario/anomalías
5.
Hum Genomics ; 18(1): 41, 2024 Apr 24.
Artículo en Inglés | MEDLINE | ID: mdl-38654324

RESUMEN

BACKGROUND: Congenital anomalies of the kidney and urinary tract (CAKUT) are prevalent birth defects. Although pathogenic CAKUT genes are known, they are insufficient to reveal the causes for all patients. Our previous studies indicated GEN1 as a pathogenic gene of CAKUT in mice, and this study further investigated the correlation between GEN1 and human CAKUT. METHODS: In this study, DNA from 910 individuals with CAKUT was collected; 26 GEN1 rare variants were identified, and two GEN1 (missense) variants in a non-CAKUT group were found. Mainly due to the stability results of the predicted mutant on the website, in vitro, 10 variants (eight CAKUT, two non-CAKUT) were selected to verify mutant protein stability. In addition, mainly based on the division of the mutation site located in the functional region of the GEN1 protein, 8 variants (six CAKUT, two non-CAKUT) were selected to verify enzymatic hydrolysis, and the splice variant GEN1 (c.1071 + 3(IVS10) A > G) was selected to verify shear ability. Based on the results of in vitro experiments and higher frequency, three sites with the most significant functional change were selected to build mouse models. RESULTS: Protein stability changed in six variants in the CAKUT group. Based on electrophoretic mobility shift assay of eight variants (six CAKUT, two non-CAKUT), the enzymatic hydrolysis and DNA-binding abilities of mutant proteins were impaired in the CAKUT group. The most serious functional damage was observed in the Gen1 variant that produced a truncated protein. A mini-gene splicing assay showed that the variant GEN1 (c.1071 + 3(IVS10) A > G) in the CAKUT group significantly affected splicing function. An abnormal exon10 was detected in the mini-gene splicing assay. Point-mutant mouse strains were constructed (Gen1: c.1068 + 3 A > G, p.R400X, and p.T105R) based on the variant frequency in the CAKUT group and functional impairment in vitro study and CAKUT phenotypes were replicated in each. CONCLUSION: Overall, our findings indicated GEN1 as a risk factor for human CAKUT.


Asunto(s)
Anomalías Urogenitales , Reflujo Vesicoureteral , Animales , Femenino , Humanos , Masculino , Ratones , Predisposición Genética a la Enfermedad , Riñón/anomalías , Riñón/patología , Riñón/metabolismo , Mutación/genética , Estabilidad Proteica , Factores de Riesgo , Sistema Urinario/anomalías , Sistema Urinario/patología , Anomalías Urogenitales/genética , Anomalías Urogenitales/patología , Reflujo Vesicoureteral/genética , Reflujo Vesicoureteral/patología
6.
Ital J Pediatr ; 50(1): 79, 2024 Apr 20.
Artículo en Inglés | MEDLINE | ID: mdl-38641829

RESUMEN

BACKGROUND: Reviews on Down syndrome do not or only marginally address the issue of kidney and urogenital tract abnormalities, and lower urinary tract dysfunctions. Hence, we performed a meta-analysis of the literature.  METHODS: A literature search was undertaken in the Library of Medicine, Web of Science and Excerpta Medica. The search algorithm combined various keywords: (Down syndrome OR trisomy 21 OR mongolism) AND (kidney OR urinary tract OR bladder) AND (malformation OR dysfunction OR anomaly OR abnormality OR size). The Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement was used. RESULTS: Eight case-control studies were retained for the final analysis. Three studies addressed the prevalence of kidney and urogenital tract abnormalities: an increased pooled relative risk of 5.49 (95%-CI: 1.78-16.93) was observed in Down syndrome. Penile malformations, obstructive malformations (including urethral valves), dilated urinary tract system, and kidney hypodysplasia were especially common. Three reports addressed the prevalence of lower urinary tract dysfunction: an increased pooled relative risk of 2.95 (95%-CI: 1.15-7.56) was observed. Finally, an autoptic study and an ultrasound study disclosed a reduced kidney size in Down syndrome. CONCLUSIONS: This meta-analysis indicates that abnormalities of the kidney and urogenital tract, lower urinary tract dysfunctions, and a reduced kidney size present with an increased frequency in individuals with Down syndrome.


Asunto(s)
Síndrome de Down , Sistema Urinario , Anomalías Urogenitales , Humanos , Síndrome de Down/complicaciones , Síndrome de Down/epidemiología , Riñón/anomalías , Sistema Urinario/anomalías , Anomalías Urogenitales/complicaciones , Anomalías Urogenitales/epidemiología
7.
Sci Rep ; 14(1): 9520, 2024 04 25.
Artículo en Inglés | MEDLINE | ID: mdl-38664452

RESUMEN

The link between neonatal jaundice and urinary tract infection (UTI) remains debated, with congenital kidney and urinary tract anomalies (CAKUT) potentially playing a role. This population-based study aimed to analyze the correlations between neonatal jaundice, CAKUT, and concomitant UTI. The study cohort consisted of 2,078,122 live births from 2004 to 2014. We linked several population-based datasets in Taiwan to identify infants with unexplained neonatal jaundice and their mothers. The primary outcome was the rate of CAKUT occurring within 3 years after delivery, and the presence of concomitant UTI during neonatal jaundice hospitalization. Infants with neonatal jaundice had a significantly higher risk of CAKUT (adjusted odds ratio [aOR] 1.24, 95% confidence interval [CI] 1.11-1.39) during early childhood. Among the subtypes of CAKUT, obstructive uropathy, vesicoureteral reflux and other CAKUT were associated with an increased risk of neonatal jaundice. Infants who underwent intensive phototherapy, had a late diagnosis (> 14 days of postnatal age) or underwent a prolonged duration of phototherapy (> 3 days) exhibited a higher risk of concomitant UTI compared to other infants with jaundice. Our findings indicate a notable association between neonatal jaundice and increased risks of UTIs in the context of CAKUT. This study underscore the importance of vigilant monitoring and timely interventions for neonates presenting with jaundice, while acknowledging the complexity and variability in the progression of CAKUT and its potential connection to UTIs.


Asunto(s)
Ictericia Neonatal , Infecciones Urinarias , Reflujo Vesicoureteral , Humanos , Infecciones Urinarias/complicaciones , Infecciones Urinarias/epidemiología , Ictericia Neonatal/epidemiología , Ictericia Neonatal/complicaciones , Ictericia Neonatal/etiología , Femenino , Recién Nacido , Masculino , Taiwán/epidemiología , Factores de Riesgo , Riñón/anomalías , Lactante , Sistema Urinario/anomalías , Anomalías Urogenitales/complicaciones , Anomalías Urogenitales/epidemiología
8.
Biochem Biophys Res Commun ; 714: 149959, 2024 Jun 25.
Artículo en Inglés | MEDLINE | ID: mdl-38657443

RESUMEN

Gestational diabetes mellitus (GDM) presents a substantial population health concern. Previous studies have revealed that GDM can ultimately influence nephron endowment. In this study, we established a GDM mouse model to investigate the embryological alterations and molecular mechanisms underlying the development of congenital anomalies of the kidney and urinary tract (CAKUT) affected by GDM. Our study highlights that GDM could contribute to the manifestation of CAKUT, with prevalent phenotypes characterized by isolated hydronephrosis and duplex kidney complicated with hydronephrosis in mice. Ectopic ureteric buds (UBs) and extended length of common nephric ducts (CNDs) were noted in the metanephric development stage. The expression of Ret and downstream p-ERK activity were enhanced in UBs, which indicated the alteration of RET/MAPK/ERK pathway may be one of the mechanisms contributing to the increased occurrence of CAKUT associated with GDM.


Asunto(s)
Diabetes Gestacional , Sistema de Señalización de MAP Quinasas , Proteínas Proto-Oncogénicas c-ret , Anomalías Urogenitales , Reflujo Vesicoureteral , Animales , Femenino , Ratones , Embarazo , Diabetes Gestacional/metabolismo , Riñón/anomalías , Riñón/metabolismo , Riñón/embriología , Proteínas Proto-Oncogénicas c-ret/metabolismo , Proteínas Proto-Oncogénicas c-ret/genética , Sistema Urinario/anomalías , Sistema Urinario/embriología , Anomalías Urogenitales/etiología , Anomalías Urogenitales/genética , Anomalías Urogenitales/patología
9.
Indian J Pathol Microbiol ; 67(2): 289-296, 2024 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-38394395

RESUMEN

OBJECTIVES AND BACKGROUND: According to studies, 1% of all pregnancies have an abnormality, with 20-30% of those affecting the genitourinary system. Congenital abnormalities of the kidney and urinary tract (CAKUT) is one of the primary causes of perinatal and neonatal mortality in children. Many extra-renal congenital illnesses accompany these defects, affecting the patient's prognosis. This study aims to determine the subtypes, frequency, and extra-renal defects associated with congenital anomalies of the urinary system, which is the major cause of mortality in fetal and infant autopsies throughout the perinatal and neonatal eras. We believe that our study will contribute to the literature because few autopsy investigations can give this data. MATERIALS AND METHODS: The study included 110 fetal autopsies between January 1997 and May 2019. 10% were newborns under the age of one year, and 90% were fetus autopsies. RESULTS: Males accounted for 67.3% of the cases, while females accounted for 35 (31.8%) (the gender of one case could not be determined). Renal dysplasia was the most frequent CAKUT, with a rate of 22.73%, followed by renal agenesis, with a rate of 20.0%. Eighty-four cases (76.3%) showed disease in at least one other organ system. Musculoskeletal system (MSS) abnormalities were the most common associated system anomaly, with one or more MSS anomalies (34.55%) detected in 38 cases. CONCLUSION: Finally, we want to underline that CAKUT and its associated anomalies are not uncommon. Prenatal imaging, genetic investigation, and/or postmortem examination should all be used to screen for CAKUT. This information is helpful for the mother's future pregnancy management and parental genetic counseling.


Asunto(s)
Autopsia , Feto , Riñón , Sistema Urinario , Anomalías Urogenitales , Humanos , Femenino , Masculino , Feto/anomalías , Feto/patología , Recién Nacido , Riñón/patología , Riñón/anomalías , Anomalías Urogenitales/patología , Anomalías Urogenitales/epidemiología , Sistema Urinario/anomalías , Sistema Urinario/patología , Embarazo , Lactante , Estudios Retrospectivos , Reflujo Vesicoureteral
10.
Pediatr Nephrol ; 39(6): 1847-1858, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38196016

RESUMEN

BACKGROUND: We aimed to develop a tool for predicting HNF1B mutations in children with congenital abnormalities of the kidneys and urinary tract (CAKUT). METHODS: The clinical and laboratory data from 234 children and young adults with known HNF1B mutation status were collected and analyzed retrospectively. All subjects were randomly divided into a training (70%) and a validation set (30%). A random forest model was constructed to predict HNF1B mutations. The recursive feature elimination algorithm was used for feature selection for the model, and receiver operating characteristic curve statistics was used to verify its predictive effect. RESULTS: A total of 213 patients were analyzed, including HNF1B-positive (mut + , n = 109) and HNF1B-negative (mut - , n = 104) subjects. The majority of patients had mild chronic kidney disease. Kidney phenotype was similar between groups, but bilateral kidney anomalies were more frequent in the mut + group. Hypomagnesemia and hypermagnesuria were the most common abnormalities in mut + patients and were highly selective of HNF1B. Hypomagnesemia based on age-appropriate norms had a better discriminatory value than the age-independent cutoff of 0.7 mmol/l. Pancreatic anomalies were almost exclusively found in mut + patients. No subjects had hypokalemia; the mean serum potassium level was lower in the HNF1B cohort. The abovementioned, discriminative parameters were selected for the model, which showed a good performance (area under the curve: 0.85; sensitivity of 93.67%, specificity of 73.57%). A corresponding calculator was developed for use and validation. CONCLUSIONS: This study developed a simple tool for predicting HNF1B mutations in children and young adults with CAKUT.


Asunto(s)
Enfermedades Renales , Sistema Urinario , Anomalías Urogenitales , Reflujo Vesicoureteral , Niño , Humanos , Adulto Joven , Estudios Retrospectivos , Riñón/anomalías , Sistema Urinario/anomalías , Mutación , Enfermedades Renales/genética , Magnesio , Factor Nuclear 1-beta del Hepatocito/genética
11.
Neoreviews ; 25(2): e78-e87, 2024 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-38296785

RESUMEN

Congenital anomalies of the kidneys and urinary tract encompass the spectrum of disorders that include the kidneys, ureters, bladder, and urethra. These abnormalities often lead to altered renal size and location, dysplastic changes in the kidney parenchyma, and anomalies in the collecting system. Though the etiology of each of these conditions can be variable, it is known that the collection of these defects represent 40% to 50% of all pediatric end-stage renal disease worldwide. The multifaceted management of these conditions is aimed at preserving kidney function and ultimately delaying the need for transplantation. With the advancement of prenatal ultrasonographic techniques, these conditions are more likely to be diagnosed before birth, which often leads to rapid postnatal intervention and better outcomes.


Asunto(s)
Fallo Renal Crónico , Sistema Urinario , Embarazo , Femenino , Humanos , Niño , Riñón/diagnóstico por imagen , Sistema Urinario/anomalías , Vejiga Urinaria/diagnóstico por imagen
12.
Pediatr Nephrol ; 39(2): 357-369, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37468646

RESUMEN

Congenital anomalies of the kidney and urinary tract (CAKUT) are among the most common birth defects worldwide and a major cause of kidney failure in children. Extra-renal manifestations are also common. This study reviewed diseases associated with the Genomics England CAKUT-associated gene panel for ocular anomalies. In addition, each gene was examined for expression in the human retina and an ocular phenotype in mouse models using the Human Protein Atlas and Mouse Genome Informatics databases, respectively. Thirty-four (54%) of the 63 CAKUT-associated genes (55 'green' and 8 'amber') had a reported ocular phenotype. Five of the 6 most common CAKUT-associated genes (PAX2, EYA1, SALL1, GATA3, PBX1) that represent 30% of all diagnoses had ocular features. The ocular abnormalities found with most CAKUT-associated genes and with five of the six commonest were coloboma, microphthalmia, optic disc anomalies, refraction errors (astigmatism, myopia, and hypermetropia), and cataract. Seven of the CAKUT-associated genes studied (11%) had no reported ocular features but were expressed in the human retina or had an ocular phenotype in a mouse model, which suggested further possibly-unrecognised abnormalities. About one third of CAKUT-associated genes (18, 29%) had no ocular associations and were not expressed in the retina, and the corresponding mouse models had no ocular phenotype. Ocular abnormalities in individuals with CAKUT suggest a genetic basis for the disease and sometimes indicate the affected gene. Individuals with CAKUT often have ocular abnormalities and may require an ophthalmic review, monitoring, and treatment to preserve vision.


Asunto(s)
Sistema Urinario , Anomalías Urogenitales , Reflujo Vesicoureteral , Niño , Ratones , Animales , Humanos , Riñón/metabolismo , Sistema Urinario/anomalías , Reflujo Vesicoureteral/genética , Reflujo Vesicoureteral/diagnóstico , Anomalías Urogenitales/genética , Anomalías Urogenitales/diagnóstico
14.
Radiologie (Heidelb) ; 64(1): 3-10, 2024 Jan.
Artículo en Alemán | MEDLINE | ID: mdl-38095684

RESUMEN

CLINICAL PROBLEM: Congenital anomalies of the kidney and urinary tract (CAKUT) are very common findings in fetal diagnostics. Their effects range from variants without pathological significance to pronounced functional impairment with the need for renal replacement therapy in childhood. Sometimes the genital organs are also affected. The aim of the article is to provide an overview of embryology and examples of key findings. IMAGING PROCEDURES: In the fetal period, magnetic resonance imaging (MRI) is used, while postnatally, sonography with the option of contrast-enhanced micturition urosonography (MUS, ceVUS) dominates imaging in pediatric radiology, supplemented in individual cases by fluoroscopy (micturition cysturethrography) and MRI. Quantitative methods for assessing kidney function and excretion (MAG3 scintigraphy, functional MR urography) are essential when planning further therapeutic procedures, especially in obstructive uropathies. CONCLUSION: Imaging plays an essential role in the assessment of abnormalities of the kidneys and urinary tract both pre- and postnatally. Knowledge of embryology facilitates anatomical understanding and assessment of pathologies.


Asunto(s)
Radiología , Sistema Urinario , Anomalías Urogenitales , Reflujo Vesicoureteral , Niño , Embarazo , Femenino , Humanos , Riñón/diagnóstico por imagen , Riñón/anomalías , Sistema Urinario/diagnóstico por imagen , Sistema Urinario/anomalías , Imagen por Resonancia Magnética/métodos
15.
Pediatr Nephrol ; 39(4): 1185-1192, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-37910243

RESUMEN

BACKGROUND: Congenital anomalies of the kidney and urinary tract (CAKUT) are the most common cause of childhood chronic kidney disease (CKD). We hypothesized that hypertension varies across CAKUT categories and increases the risk of CKD. METHODS: This was a retrospective cohort study and included cases with a multicystic dysplastic kidney (MCDK, n = 81), unilateral kidney agenesis (UKA, n = 47), kidney hypoplasia (KH, n = 130), and posterior urethral valves (PUV, n = 75). Hypertension was defined as systolic or diastolic blood pressure ≥ 95th percentile for age, sex and height, and CKD as an estimated glomerular filtration rate < 60 ml/min/1.73 m2, both at 2 consecutive clinic visits at least 3 months apart. RESULTS: Sixty-two (19%) out of 333 cases developed hypertension, with significant difference according to CAKUT type. Patients with smaller kidney size (7.7 vs. 8.3, p = 0.045), kidney anomalies in addition to the primary diagnosis (aCAKUT) (53 vs. 38%, p = 0.03), proteinuria (46 vs. 12%, p < 0.001), and CKD (51 vs. 23%, p < 0.001) were more likely to develop hypertension. When adjusted for kidney size, the diagnoses of PUV (OR 10.9, 95%CI 3.0, 40.5), UKA (OR 6.4, 95%CI 1.6, 24.9) and KH (OR 4.2, 95%CI 1.1, 16.1), and aCAKUT (OR 2.1, 95%CI 1.2, 3.9) were independent risk factors for hypertension. Hypertension increased the risk of developing CKD by twofold (HR 1.9, 95%CI 1.19, 2.94). CONCLUSION: Hypertension is common in children with CAKUT and increases the risk of CKD. These findings will aid in the development of a standardized clinical pathway for the care of hypertensive children with CAKUT.


Asunto(s)
Hipertensión , Insuficiencia Renal Crónica , Sistema Urinario , Anomalías Urogenitales , Reflujo Vesicoureteral , Niño , Humanos , Estudios Retrospectivos , Riñón/anomalías , Sistema Urinario/anomalías , Hipertensión/epidemiología , Insuficiencia Renal Crónica/epidemiología , Insuficiencia Renal Crónica/etiología
16.
Pediatr Nephrol ; 39(4): 1065-1075, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-37656310

RESUMEN

Congenital anomalies of the kidney and urinary tract are collectively one of the most commonly diagnosed antenatal conditions. Clinicians have several tools available to diagnose anomalies, including imaging, biomarkers, family history and genetic studies. In certain cases, antenatal interventions such as vesico-amniotic shunting may be considered to improve postnatal outcomes.Congenital kidney anomalies detected antenatally can vary in clinical significance from almost no impact postnatally to significant morbidity and perinatal mortality. Prognosis broadly depends on kidney size, structure and amount of amniotic fluid, alongside genetics and family history, and progression on subsequent scans. It is important to counsel parents appropriately using a parent-focused and personalised approach. The use of a multidisciplinary team should always be considered.


Asunto(s)
Sistema Urinario , Anomalías Urogenitales , Femenino , Humanos , Embarazo , Anomalías Urogenitales/diagnóstico por imagen , Anomalías Urogenitales/terapia , Riñón/diagnóstico por imagen , Riñón/anomalías , Sistema Urinario/diagnóstico por imagen , Sistema Urinario/anomalías , Diagnóstico Prenatal , Consejo
17.
Sci Rep ; 13(1): 13204, 2023 08 14.
Artículo en Inglés | MEDLINE | ID: mdl-37580336

RESUMEN

Congenital renal tract malformations (RTMs) are the major cause of severe kidney failure in children. Studies to date have identified defined genetic causes for only a minority of human RTMs. While some RTMs may be caused by poorly defined environmental perturbations affecting organogenesis, it is likely that numerous causative genetic variants have yet to be identified. Unfortunately, the speed of discovering further genetic causes for RTMs is limited by challenges in prioritising candidate genes harbouring sequence variants. Here, we exploited the computer-based artificial intelligence methodology of supervised machine learning to identify genes with a high probability of being involved in renal development. These genes, when mutated, are promising candidates for causing RTMs. With this methodology, the machine learning classifier determines which attributes are common to renal development genes and identifies genes possessing these attributes. Here we report the validation of an RTM gene classifier and provide predictions of the RTM association status for all protein-coding genes in the mouse genome. Overall, our predictions, whilst not definitive, can inform the prioritisation of genes when evaluating patient sequence data for genetic diagnosis. This knowledge of renal developmental genes will accelerate the processes of reaching a genetic diagnosis for patients born with RTMs.


Asunto(s)
Inteligencia Artificial , Sistema Urinario , Niño , Humanos , Ratones , Animales , Riñón/anomalías , Sistema Urinario/anomalías , Aprendizaje Automático
18.
Adv Pediatr ; 70(1): 131-144, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37422291

RESUMEN

Lower urinary tract obstruction (LUTO) is a rare birth defect with a prevalence between 1 in 5,000 and 1 in 25,000 pregnancies. LUTO is one of the most common causes of congenital abnormalities of the renal tract. Several genetic conditions have been associated with LUTO. Most common causes of LUTO are posterior urethral valves and urethral atresia. Despite available prenatal and postnatal treatments, LUTO is a significant cause of morbidity and mortality in newborns causing significant end stage renal disease and pulmonary hypoplasia.


Asunto(s)
Obstrucción Uretral , Sistema Urinario , Embarazo , Femenino , Humanos , Recién Nacido , Estudios Retrospectivos , Ultrasonografía Prenatal , Obstrucción Uretral/diagnóstico , Obstrucción Uretral/epidemiología , Obstrucción Uretral/etiología , Riñón , Sistema Urinario/anomalías
19.
Commun Biol ; 6(1): 735, 2023 07 17.
Artículo en Inglés | MEDLINE | ID: mdl-37460814

RESUMEN

Congenital anomalies of the kidney and urinary tract (CAKUT) are disorders resulting from defects in the development of the kidneys and their outflow tract. Copy number variations (CNVs) have been identified as important genetic variations leading to CAKUT, whereas most CAKUT-associated CNVs cannot be attributed to a specific pathogenic gene. Here we construct coexpression networks involving long noncoding RNAs (lncRNAs) within these CNVs (CNV-lncRNAs) using human kidney developmental transcriptomic data. The results show that CNV-lncRNAs encompassed in recurrent CAKUT associated CNVs have highly correlated expression with CAKUT genes in the developing kidneys. The regulatory effects of two hub CNV-lncRNAs (HSALNG0134318 in 22q11.2 and HSALNG0115943 in 17q12) in the module most significantly enriched in known CAKUT genes (CAKUT_sig1, P = 1.150 × 10-6) are validated experimentally. Our results indicate that the reduction of CNV-lncRNAs can downregulate CAKUT genes as predicted by our computational analyses. Furthermore, knockdown of HSALNG0134318 would downregulate HSALNG0115943 and affect kidney development related pathways. The results also indicate that the CAKUT_sig1 module has function significance involving multi-organ development. Overall, our findings suggest that CNV-lncRNAs play roles in regulating CAKUT genes, and the etiologies of CAKUT-associated CNVs should take account of effects on the noncoding genome.


Asunto(s)
ARN Largo no Codificante , Sistema Urinario , Humanos , Variaciones en el Número de Copia de ADN , ARN Largo no Codificante/genética , ARN Largo no Codificante/metabolismo , Sistema Urinario/anomalías , Riñón/metabolismo
20.
Nat Rev Nephrol ; 19(11): 709-720, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-37524861

RESUMEN

Congenital anomalies of the kidney and urinary tract (CAKUT) comprise a large variety of malformations that arise from defective kidney or urinary tract development and frequently lead to kidney failure. The clinical spectrum ranges from severe malformations, such as renal agenesis, to potentially milder manifestations, such as vesicoureteral reflux. Almost 50% of cases of chronic kidney disease that manifest within the first three decades of life are caused by CAKUT. Evidence suggests that a large number of CAKUT are genetic in origin. To date, mutations in ~54 genes have been identified as monogenic causes of CAKUT, contributing to 12-20% of the aetiology of the disease. Pathogenic copy number variants have also been shown to cause CAKUT and can be detected in 4-11% of patients. Furthermore, environmental and epigenetic factors can increase the risk of CAKUT. The discovery of novel CAKUT-causing genes is challenging owing to variable expressivity, incomplete penetrance and variable genotype-phenotype correlation. However, such a discovery could ultimately lead to improvements in the accurate molecular genetic diagnosis, assessment of prognosis and multidisciplinary clinical management of patients with CAKUT, potentially including personalized therapeutic approaches.


Asunto(s)
Insuficiencia Renal Crónica , Sistema Urinario , Anomalías Urogenitales , Reflujo Vesicoureteral , Humanos , Riñón/anomalías , Anomalías Urogenitales/diagnóstico , Sistema Urinario/anomalías , Reflujo Vesicoureteral/genética , Insuficiencia Renal Crónica/genética
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA