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https://www.readbyqxmd.com/read/29786190/-identification-of-a-new-mutation-of-the-nphp1-gene
#1
Antonella La Russa, Rosa Anna Cifarelli, Anna Perri, Angelo Saracino, Giovanni Santarsia, Renzo Bonofiglio
Kidney cystic diseases are inherited disorders causing chronic renal failure. According to the genetic defect they are classified as diseases of the primary ciliary complex and uromodulin-associated diseases. Mutations in genes coding for ciliary proteins are the basis of a broad category of genetic diseases, called ciliopathies. To date, three important ciliopathies are known: the autosomal dominant form and the recessive shape of the polycystic kidney and the nephronophthisis (NPHP). Juvenile Nephronophthisis (NPHP) is a progressive renal tubulo-interstitial disorder with a form of autosomal recessive inheritance that progresses inexorably towards terminal renal failure...
May 2018: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/29783827/-joubert-syndrome-in-a-child-with-nephronophthisis
#2
Y H Li, X S Shao, X H Jiang
No abstract text is available yet for this article.
May 2, 2018: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29779043/glis1-3-transcription-factors-critical-roles-in-the-regulation-of-multiple-physiological-processes-and-diseases
#3
REVIEW
Anton M Jetten
Krüppel-like zinc finger proteins form one of the largest families of transcription factors. They function as key regulators of embryonic development and a wide range of other physiological processes, and are implicated in a variety of pathologies. GLI-similar 1-3 (GLIS1-3) constitute a subfamily of Krüppel-like zinc finger proteins that act either as activators or repressors of gene transcription. GLIS3 plays a critical role in the regulation of multiple biological processes and is a key regulator of pancreatic β cell generation and maturation, insulin gene expression, thyroid hormone biosynthesis, spermatogenesis, and the maintenance of normal kidney functions...
May 19, 2018: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29717526/nephronophthisis-a-review-of-genotype-phenotype-correlation
#4
REVIEW
Fenglan Luo, Yuhong Tao
Nephronophthisis is an autosomal recessive cystic kidney disease and one of the most common genetic disorders causing end-stage renal disease in children. Nephronophthisis is a genetically heterogenous disorder with more than 25 identified genes. In 10%-20% of cases, there are additional features of a ciliopathy syndrome, such as retinal defects, liver fibrosis, skeletal abnormalities, and brain developmental disorders. This review provides an update of the recent advances in the clinical features and related gene mutations of nephronophthisis, and novel approaches for therapy in nephronophthisis patients may be needed...
May 1, 2018: Nephrology
https://www.readbyqxmd.com/read/29706353/patient-ipsc-derived-kidney-organoids-show-functional-validation-of-a-ciliopathic-renal-phenotype-and-reveal-underlying-pathogenetic-mechanisms
#5
Thomas A Forbes, Sara E Howden, Kynan Lawlor, Belinda Phipson, Jovana Maksimovic, Lorna Hale, Sean Wilson, Catherine Quinlan, Gladys Ho, Katherine Holman, Bruce Bennetts, Joanna Crawford, Peter Trnka, Alicia Oshlack, Chirag Patel, Andrew Mallett, Cas Simons, Melissa H Little
Despite the increasing diagnostic rate of genomic sequencing, the genetic basis of more than 50% of heritable kidney disease remains unresolved. Kidney organoids differentiated from induced pluripotent stem cells (iPSCs) of individuals affected by inherited renal disease represent a potential, but unvalidated, platform for the functional validation of novel gene variants and investigation of underlying pathogenetic mechanisms. In this study, trio whole-exome sequencing of a prospectively identified nephronophthisis (NPHP) proband and her parents identified compound-heterozygous variants in IFT140, a gene previously associated with NPHP-related ciliopathies...
April 21, 2018: American Journal of Human Genetics
https://www.readbyqxmd.com/read/29575630/isosorbide-dinitrate-in-nephronophthisis-treatment
#6
Alanna Strong, Samina Muneeruddin, Richard Parrish, Daniel Lui, Susan B Conley
Nephronophthisis is a progressive disease that affects development of the renal tubules and leads to end stage renal disease. Many affected children have isolated renal disease; however, there can be additional manifestations including heart defects, liver fibrosis, brain malformations, and situs inversus. There is no way to slow or modify the disease. We describe a patient who presented at birth with cholestatic jaundice and decreased kidney function, found by exome sequencing to have two NPHP3 variants. Her clinical status deteriorated rapidly, and two disease-modifying agents were given in hopes of slowing disease progression, the arginine vasopressin type II receptor antagonist tolvaptan to stabilize her renal function and isosorbide dinitrate to manage her poorly controlled hypertension...
April 2018: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29552446/the-ratio-of-urinary-%C3%AE-1-microglobulin-to-microalbumin-can-be-used-as-a-diagnostic-criterion-for-tubuloproteinuria
#7
Hongwen Zhang, Fang Wang, Huijie Xiao, Yong Yao
Low-molecular-weight proteinuria is one of the characteristic clinical manifestations of renal tubular and interstitial diseases. Low-molecular-weight proteinuria is defined as excessive urinary loss of α1-microglobulin, β2-microglobulin, or other low-molecular-weight plasma proteins. The current study examined the ratio of urinary α1-microglobulin to microalbumin in 24 Chinese pediatric patients with renal tubular and interstitial diseases, including 10 patients with Dent disease, 2 patients with Lowe syndrome, 6 patients with acute tubulointerstitial nephritis (ATIN), 4 patients with acute tubulointerstitial nephritis with uveitis syndrome (TINU), and 2 patients with nephronophthisis (NPHP)...
February 2018: Intractable & Rare Diseases Research
https://www.readbyqxmd.com/read/29497606/network-for-early-onset-cystic-kidney-diseases-a-comprehensive-multidisciplinary-approach-to-hereditary-cystic-kidney-diseases-in-childhood
#8
Jens Christian König, Andrea Titieni, Martin Konrad
Hereditary cystic kidney diseases comprise a complex group of genetic disorders representing one of the most common causes of end-stage renal failure in childhood. The main representatives are autosomal recessive polycystic kidney disease, nephronophthisis, Bardet-Biedl syndrome, and hepatocyte nuclear factor-1beta nephropathy. Within the last years, genetic efforts have brought tremendous progress for the molecular understanding of hereditary cystic kidney diseases identifying more than 70 genes. Yet, genetic heterogeneity, phenotypic variability, a lack of reliable genotype-phenotype correlations and the absence of disease-specific biomarkers remain major challenges for physicians treating children with cystic kidney diseases...
2018: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29444170/genotypic-and-phenotypic-characterization-of-the-sdccag8tn-sb-tyr-2161b-ca1c2ove-mouse-model
#9
Katie Weihbrecht, Wesley A Goar, Calvin S Carter, Val C Sheffield, Seongjin Seo
Nephronophthisis-related ciliopathies (NPHP-RC) are a group of disorders that present with end-stage renal failure in childhood/adolescence, kidney cysts, retinal degeneration, and cerebellar hypoplasia. One disorder that shares clinical features with NPHP-RC is Bardet-Biedl Syndrome (BBS). Serologically defined colon cancer antigen 8 (SDCCAG8; also known as NPHP10 and BBS16) is an NPHP gene that is also associated with BBS. To better understand the patho-mechanisms of NPHP and BBS caused by loss of SDCCAG8 function, we characterized an SDCCAG8 mouse model (Sdccag8Tn(sb-Tyr)2161B...
2018: PloS One
https://www.readbyqxmd.com/read/29436846/effect-of-dimethyl-fumarate-on-renal-disease-progression-in-a-genetic-ortholog-of-nephronophthisis
#10
Oliver Oey, Padmashree Rao, Magdalena Luciuk, Carly Mannix, Natasha M Rogers, Priyanka Sagar, Annette Wong, Gopala Rangan
Dimethyl fumarate is an FDA-approved oral immunomodulatory drug with anti-inflammatory properties that induces the upregulation of the anti-oxidant transcription factor, nuclear factor erythroid-derived factor 2. The aim of this study was to determine the efficacy of dimethyl fumarate on interstitial inflammation and renal cyst growth in a preclinical model of nephronophthisis. Four-week-old female Lewis polycystic kidney disease (a genetic ortholog of human nephronophthisis-9) rats received vehicle (V), 10 mg/kg (D10) or 30 mg/kg (D30) ( n = 8-9 each) dimethyl fumarate in drinking water for eight weeks...
March 2018: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29250687/lymphoproliferative-disorder-in-a-twin-female-teenager-post-kidney-transplantation
#11
Raluca Isac, Rodica Costa, Dorela CodruŢa Lăzureanu, Cristina Ioana Olariu, Adriana Milena Muntean, Cornel Olimpiu Aldea, Gabriela Simona Doroş, Mihai Gafencu
Post-transplant lymphoproliferative disorder (PTLD) is defined as a heterogeneous group of lymphoid and plasmocytic proliferations with variable malignant potential. They often arise in immunocompromised post solid organ transplant (SOT) patients linked with Epstein-Barr virus (EBV) infection. Clinical manifestations include fever, lymphadenopathy and organ involvement. Diagnosis of PTLD requires morphopathological tissue examination. Treatment of EBV-related PTLD in SOT patients includes immunosuppressive (IS) agents' reduction, use of antiviral medication, anti-B-lymphocyte antibodies and chemotherapy for high-risk patients...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/29194579/targeted-gene-sequencing-and-whole-exome-sequencing-in-autopsied-fetuses-with-prenatally-diagnosed-kidney-anomalies
#12
M Rasmussen, L Sunde, M L Nielsen, M Ramsing, A Petersen, T D Hjortshøj, T E Olsen, A Tabor, J M Hertz, I Johnsen, L Sperling, O B Petersen, U B Jensen, F G Møller, M B Petersen, D L Lildballe
Identification of fetal kidney anomalies invites questions about underlying causes and recurrence risk in future pregnancies. We therefore investigated the diagnostic yield of next-generation sequencing in fetuses with bilateral kidney anomalies and the correlation between disrupted genes and fetal phenotypes. Fetuses with bilateral kidney anomalies were screened using an in-house-designed kidney-gene panel. In families where candidate variants were not identified, whole-exome sequencing was performed. Genes uncovered by this analysis were added to our kidney panel...
April 2018: Clinical Genetics
https://www.readbyqxmd.com/read/29162218/renal-histology-and-mri-in-a-25-year-old-japanese-man-with-nephronophthisis-4
#13
Daisuke Takada, Akinari Sekine, Junko Yabuuchi, Yuta Kogure, Toshiharu Ueno, Masayuki Yamanouchi, Keiichi Sumida, Tatsuya Suwabe, Noriko Hayami, Junichi Hoshino, Kenmei Takaichi, Keiichi Kinowaki, Takeshi Fujii, Kenichi Ohashi, Takayasu Mori, Eisei Sohara, Shinichi Uchida, Yoshifumi Ubara
We investigated a 25-year-old Japanese man who had polycystic kidneys and end-stage renal failure without a positive family history. Ultrasonography revealed enlarged kidneys with increased echogenicity and multiple cystic lesions. MRI showed replacement of both kidneys by cystic lesions without definite walls. Renal biopsy demonstrated interstitial fibrosis, especially at the corticomedullary junction. The residual tubular system showed starfish-like disruption. Tubules with cystic dilation were mainly the distal loop of Henle and the distal tubules since immunohistochemical staining was positive for cytokeratin 7 (the distal loop of Henle and the distal tubule) and Tamm-Horsfall protein (the distal loop of Henle), while being negative for aquaporin 3 (the collecting duct) and CD10 (proximal tubule)...
March 2018: Clinical Nephrology
https://www.readbyqxmd.com/read/29146704/prospective-evaluation-of-kidney-disease-in-joubert-syndrome
#14
Leah R Fleming, Daniel A Doherty, Melissa A Parisi, Ian A Glass, Joy Bryant, Roxanne Fischer, Baris Turkbey, Peter Choyke, Kailash Daryanani, Meghana Vemulapalli, James C Mullikin, May Christine Malicdan, Thierry Vilboux, John A Sayer, William A Gahl, Meral Gunay-Aygun
BACKGROUND AND OBJECTIVES: Joubert syndrome is a genetically heterogeneous ciliopathy associated with >30 genes. The characteristics of kidney disease and genotype-phenotype correlations have not been evaluated in a large cohort at a single center. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: We evaluated 97 individuals with Joubert syndrome at the National Institutes of Health Clinical Center using abdominal ultrasonography, blood and urine chemistries, and DNA sequencing...
December 7, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/29146700/phenotypic-spectrum-of-children-with-nephronophthisis-and-related-ciliopathies
#15
Jens König, Birgitta Kranz, Sabine König, Karl Peter Schlingmann, Andrea Titieni, Burkhard Tönshoff, Sandra Habbig, Lars Pape, Karsten Häffner, Matthias Hansen, Anja Büscher, Martin Bald, Heiko Billing, Raphael Schild, Ulrike Walden, Tobias Hampel, Hagen Staude, Magdalena Riedl, Norbert Gretz, Martin Lablans, Carsten Bergmann, Friedhelm Hildebrandt, Heymut Omran, Martin Konrad
BACKGROUND AND OBJECTIVES: Genetic heterogeneity and phenotypic variability are major challenges in familial nephronophthisis and related ciliopathies. To date, mutations in 20 different genes ( NPHP1 to -20 ) have been identified causing either isolated kidney disease or complex multiorgan disorders. In this study, we provide a comprehensive and detailed characterization of 152 children with a special focus on extrarenal organ involvement and the long-term development of ESRD. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: We established an online-based registry (www...
December 7, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/29134781/clinical-and-molecular-genetic-characterization-of-a-male-patient-with-sensenbrenner-syndrome-cranioectodermal-dysplasia-and-biallelic-wdr35-mutations
#16
Joanna Walczak-Sztulpa, Anna Wawrocka, Anna Swiader-Lesniak, Magdalena Socha, Aleksander Jamsheer, Dorota Drozdz, Anna Latos-Bielenska, Katarzyna Zachwieja
BACKGROUND: Sensenbrenner syndrome (cranioectodermal dysplasia, CED) is a very rare autosomal recessive ciliopathy first described by Judith Sensenbrenner in 1975. CED is a complex disorder characterized by craniofacial, skeletal, and ectodermal abnormalities. The clinical symptoms are variable and the CED phenotype may present intrafamilial and interfamilial differences. Sensenbrenner syndrome belongs to a group of ciliary chondrodysplasias and is a genetically heterogeneous disease...
March 1, 2018: Birth Defects Research
https://www.readbyqxmd.com/read/28978526/loss-of-inversin-decreases-transepithelial-sodium-transport-in-murine-renal-cells
#17
Nalini H Kulkarni, Rosamund C Smith, Bonnie L Blazer-Yost
Type II nephronophthisis (NPHP2) is an autosomal recessive renal cystic disorder characterized by mutations in the inversin gene. Humans and mice with mutations in inversin have enlarged cystic kidneys that may be due to fluid accumulation resulting from altered ion transport. To address this, transepithelial ion transport was measured in shRNA-mediated inversin-depleted mouse cortical collecting duct (mCCD) cells. Loss of inversin decreased the basal ion flux in mCCD cells compared with controls. Depletion of inversin decreased vasopressin-induced Na+ absorption but did not alter Cl- secretion by mCCD cells...
December 1, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28973549/a-human-patient-derived-cellular-model-of-joubert-syndrome-reveals-ciliary-defects-which-can-be-rescued-with-targeted-therapies
#18
Shalabh Srivastava, Simon A Ramsbottom, Elisa Molinari, Sumaya Alkanderi, Andrew Filby, Kathryn White, Charline Henry, Sophie Saunier, Colin G Miles, John A Sayer
Joubert syndrome (JBTS) is the archetypal ciliopathy caused by mutation of genes encoding ciliary proteins leading to multi-system phenotypes, including a cerebello-retinal-renal syndrome. JBTS is genetically heterogeneous, however mutations in CEP290 are a common underlying cause. The renal manifestation of JBTS is a juvenile-onset cystic kidney disease, known as nephronophthisis, typically progressing to end-stage renal failure within the first two decades of life, thus providing a potential window for therapeutic intervention...
December 1, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28921755/homozygous-mutation-in-the-nphp3-gene-causing-foetal-nephronophthisis
#19
Uzma Abdullah, Muhammad Farooq, Ambrin Fatima, Wasima Tauseef, Yasra Sarwar, Mmh Nuri, Niels Tommerup, Shahid M Baig
We present a case of a foetal sonographic finding of hyper-echogenic kidneys, which led to a strategic series of genetic tests and identified a homozygous mutation (c.424C > T, p. R142*) in the NPHP3 gene. Our study provides a rare presentation of NPHP3-related ciliopathy and adds to the mutation spectrum of the gene, being the first one from Pakistani population. With a thorough literature review, it also advocates for molecular assessment of ciliopathies to improve risk estimate for future pregnancies, and identify predisposed asymptomatic carriers...
October 2017: Nephrology
https://www.readbyqxmd.com/read/28846093/super-resolution-microscopy-reveals-that-disruption-of-ciliary-transition-zone-architecture-causes-joubert%C3%A2-syndrome
#20
Xiaoyu Shi, Galo Garcia, Julie C Van De Weghe, Ryan McGorty, Gregory J Pazour, Dan Doherty, Bo Huang, Jeremy F Reiter
Ciliopathies, including nephronophthisis (NPHP), Meckel syndrome (MKS) and Joubert syndrome (JBTS), can be caused by mutations affecting components of the transition zone, a domain near the base of the cilium that controls the protein composition of its membrane. We defined the three-dimensional arrangement of key proteins in the transition zone using two-colour stochastic optical reconstruction microscopy (STORM). NPHP and MKS complex components form nested rings comprised of nine-fold doublets. JBTS-associated mutations in RPGRIP1L or TCTN2 displace certain transition-zone proteins...
October 2017: Nature Cell Biology
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