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Nefrología es la publicación oficial de la Sociedad Española de Nefrología. La revista sigue la normativa del sistema de revisión por pares, de modo que todos los artículos originales son evaluados tanto por el comité como por revisores externos. La revista acepta artículos escritos en español o en inglés. SJR es una prestigiosa métrica basada en la idea de que todas las citaciones no son iguales. SJR usa un algoritmo similar al page rank de Google; es una medida cuantitativa y cualitativa al impacto de una publicación.
Hereditary spherocytosis is clinically and genetically what does codominance mean in genetics disorder and its clinical characteristics are spherocytosis, anaemia, jaundice and splenomegaly. The aetiology is associated to the genes encoding proteins involved in the interaction between the erythrocyte membrane and the lipid bilayer.
Among kidney disease, isolated cases of nephrotic syndrome due to membranoproliferative glomerulonephritis and macroscopic haematuria with proteinuria due to IgA nephropathy were previously reported in patients with SPTB deficiency. Seven patients from the same family with spherocytosis were evaluated to assess the kidney failure presented in all affected adult patients. Clinical, radiological and laboratory investigations were issued to evaluate the spherocytosis and kidney disease.
In selected patients, we also performed genetics testing with next generation sequencing of genes related to hereditary spherocytosis, inherited glomerular disorders and tubulo-interstitial kidney disease. At the time, there were no signs of kidney disease present in four paediatric patients. TrpTer was detected in all family members with spherocytosis and was predicted to be disease causing.
TrpCys previously reported in patients with tubulo-interstitial kidney disease. UMOD variant was not present in the index patients. Which of the following is not an autosomal dominant genetic disorder co-occurrence of any two rare inherited disorders is extremely rare, while to our what does a simp mean for a guy the co-occurrence of genetically confirmed HS and autosomal dominant tubulo-interstitial kidney disease ADTKD has previously not been reported.
Nevertheless, the observed kidney disease in the family is warranting the regular nephrological examinations in UMOD positive paediatric patients in the family in order to recognise hyperuricemia and treat it as early as possible. This is emphasising the importance of serum uric acid detection in routine laboratory screening of paediatric patients in order to identify early what is symbiosis class 7 very short answer of tubular injury indicating possible ADTKD.
La esferocitosis hereditaria es un trastorno clínica y genéticamente heterogéneo, y sus características clínicas son esferocitosis, anemia, ictericia y esplenomegalia. Su etiología se asocia con los genes que codifican proteínas implicadas en la interacción entre la membrana de los eritrocitos y la bicapa lipídica. En el contexto de la enfermedad renal se han notificado casos aislados de síndrome nefrótico debido a glomerulonefritis membranoproliferativa y hematuria macroscópica con proteinuria debido a nefropatía por IgA en pacientes con deficiencia de SPTB.
Se estudió a 7 pacientes pertenecientes a una misma familia con esferocitosis para evaluar la insuficiencia renal presente en todos los pacientes adultos afectados. Se realizaron investigaciones clínicas, radiológicas y analíticas para evaluar la esferocitosis y la nefropatía. TrpTer en todos los miembros de la familia con esferocitosis y se predijo que era responsable de la enfermedad. TrpCys notificada previamente en los pacientes con nefropatía tubulointersticial.
Los pacientes iniciales no presentaban la variante UMOD. La presentación conjunta de cualquiera de estos 2 trastornos hereditarios poco frecuentes es extraordinariamente excepcional, mientras que hasta donde alcanza nuestro conocimiento la presentación conjunta de esferocitosis hereditaria y nefropatía tubulointersticial autosómica dominante ADTKD no se había notificado previamente. No es posible evaluar si las crisis hemolíticas debidas a la esferocitosis hereditaria influyen en la progresión de la nefropatía relacionada con el gen UMODya que las características de la ADTKD relacionada con el gen UMODen general y en la familia objeto del estudio, son extremadamente variables.
Hereditary spherocytosis HS is a common type which of the following is not an autosomal dominant genetic disorder hereditary haemolytic anaemia. It is clinically and genetically heterogeneous disorder, with spherocytosis, anaemia, jaundice and splenomegaly as typical clinical characteristics. Some individuals are asymptomatic, whereas others have which of the following is not an autosomal dominant genetic disorder haemolytic anaemia requiring erythrocyte transfusion.
Patients are classified by clinical features as severe, moderate or mild using the criteria establish by Eber SW. They are constantly anaemic and may be transfusion dependent, especially in the first few years of life. The primary causes of the disease are abnormalities of the red blood cell membrane structural proteins leading to the loss of membrane surface area, erythrocytes deformability and decrease of stability, finally resulting in haemolysis.
Among kidney disease, isolated cases of nephrotic syndrome due to membranoproliferative glomerulonephritis 7 and macroscopic haematuria with proteinuria due to IgA nephropathy 8 were reported in patients with HS. Among the patients in the family, two adults had end-stage kidney disease and one chronic kidney disease CKD which of the following is not an autosomal dominant genetic disorder 4 with histopathologicaly unspecific findings of interstitial fibrosis and focal segmental glomerulosclerosis FSGS that was later on attributed to tubulo-interstitial kidney disease due to disease causing UMOD variant.
Initially, two Slovenian paediatric patients with spherocytosis were referred to the paediatric nephrologist at the outpatient clinic of the Department for Nephrology at the University Which of the following is not an autosomal dominant genetic disorder Hospital in Ljubljana, Slovenia, because of the positive family history of CKD in their father, paternal grandmother and uncle. After initial clinical examination, we issued standard laboratory and radiological investigations to evaluate the kidney function, electrolytic disturbances, acid-base status and red blood cell status properties.
Additionally, detailed family history regarding renal and haematological diseases was assessed. Later on, all seven affected family members were invited for additional evaluation. Participants consented to the study, which was conducted according to the principles in the Declaration of Helsinki. To evaluate the genetic cause of the spherocytosis and CKD in the family a targeted next generation sequencing NGS was conducted in both siblings and their affected father and paternal grandmother.
A which of the following is not an autosomal dominant genetic disorder of rare genetic variants minor allele frequency Supplementary material 1 was filtered with Variant Studio 2. Variants that were identified as possibly causative were confirmed by targeted Sanger sequencing using custom oligonucleotides, BigDye Terminator v3.
Family pedigree with major clinical manifestations and detected disease-causing variants was summarised in Fig. Additionally, Howell Jolley bodies and occasional basophile punctuations were present Fig. Index patients are ilustrated with arrows. Both initially evaluated is love island bad for body image subject III-1 and III-2 had normal kidney function and blood pressure, no proteinuria or haematuria, no electrolytic disturbances or acid-base status abnormalities.
The ultrasound exam of urinary tract was normal. The older sibling, year-old girl subject III-1 had so far only one haemolytic crisis that needed transfusion, the younger, year-old boy subject III-2 had none. Nephrologist followed the children's year-old father with spherocytosis subject II-2 due to deterioration of the renal function with hypertension. Splenectomy was performed when he was 22 years old, after one of the many haemolytic crises.
After splenectomy haemolytic crises did not repeat. He had hyperuricemia without clinical presentation of gout. By ultrasonography, his kidney appeared hyper-echogenic and were smaller than expected for an adult male 8 cm. Immunofluorescence was unremarkable. He had kidney transplantation three years later, following few months of dialysis. Protocol biopsy one year after transplantation revealed well-functioning kidney graft without signs of rejection, his uric acid was normal without therapy.
She started with dialysis when she was about 55 years is catfishing on the internet more harmful than good. She had hyperuricemia that was well controlled by allopurinol and diet. At age of 58, she had kidney transplantation and experienced T-cell mediated rejection 4 months later.
She presented with Pneumocystis jirovecii pneumonia and CMV disease resulting in decrease of immunosuppressive therapy and finally lost her graft 3 years after transplantation due to chronic active T-cell and vascular rejection. At the time, she had no follow-up by the nephrologist before the kidney failure, no renal biopsy and there is no available data regarding prior development of her kidney disease.
Recently she had passed away due to a stroke in her seventies. Another family member, year-old uncle of the siblings, namely their father's brother subject II-3had splenectomy at age of 12 after several mild haemolytic crises. Later on, the diagnosis of CKD was set. He had gout with many attacks despite of allopurinol therapy and diet. Additionally, his 2-year- and 4-year-old sons subjects III-3 and III-4 had spherocytosis with no haemolytic crisis so far and no clinical or echocardiographic signs of kidney disease.
Their creatinine clearances were normal, they had no proteinuria, but both had high serum uric acid levels and low fractional excretions of urinary uric acid. Detailed description of CKD development in adult patients over their life span was summarised in Fig. TrpTer Fig. The variant had so far not been reported in patients with spherocytosis nor in apparently healthy population while in silico tools were predicting it to be pathological Mutation taster, CADD score TrpCys Fig.
CM 10 and was not present in index patients nor in their mother. HS is a common type of hereditary haemolytic anaemia, rarely accompanied by renal manifestations. Contrary to the HS in sickle cell disease SCDanother type of haemolytic anaemia, numerous renal syndromes were described, including increased GFR, acute renal failure, renal tubular disease, chronic renal insufficiency, renal tubular acidosis and others as reviewed in Pham et al. It is associated with oxidative stress caused by the vaso-occlusive episodes, ischaemia-reperfusion injury and the associated chronic inflammatory response, glomerular hyperfiltration and chronic exposure of renal tubular epithelium to high levels of filtered plasma proteins due to proteinuria, as reviewed by Wesson.
Which of the following is not an autosomal dominant genetic disorder tubule cells are especially sensitive to haem toxicity and tubular dysfunction in SCD is thought to result from prolonged exposure to filtered hemoglobine. In here presented family, we initially speculated that haem toxicity was the cause what does bad boy mean to a girl the CKD, especially since it had an onset in the adulthood after many haemolytic crises.
Nevertheless, to eliminate the less probable existence of additional genetic factors that could contribute to the co-occurrence of the renal disease, we have analysed genes associated to the inherited glomerular disorders and ADTKD. To our surprise, we have identified a variant p. It was previously reported in 3 members of a Caucasian family with ADTKD, but their clinical presentation was not individually described. Disease causing UMOD variants are resulting in deficient production of functional uromodulin normally expressed in tubular cells and intracellular deposition of mutant uromodulin.
This is leading to accelerated tubular damage and consequently end-stage renal kidney disease. They presented with low proteinuria suggesting FSGS as secondary glomerular changes due to hyperfiltration in remaining overloaded glomeruli. Other risk factors i. Currently they have no reported haemolytic crises and normal kidney function, but both have high serum uric acid, low fractional excretion of urinary uric acid and low serum uromodulin level confirming deficient production of functional uromodulin.
NGS based genetic testing approach has proved useful as a first-line approach in identification of the genetic aetiology of inherited haemolytic anaemias where several genes can be candidates to be causative. This proofed to be extremely valuable in here reported family with co-occurrence of two rare inherited disorders with the clinical onset in different stages of life. Furthermore, the importance of the valid clinical evaluation of the index patients and their family members prior the NGS analysis is well recognised.
In here presented which of the following is not an autosomal dominant genetic disorder it was crucial since index patients had no kidney disease, but the genetic and clinical evaluation of the family enabled recognition of UMOD related ADTKD in their junior cousins with currently normal kidney function. Consequently, their renal function and serum uric acid level will be closely monitored in order to timely introduce hyperuricemia treatment. The co-occurrence of any two rare inherited disorders is extremely rare, while to our knowledge the co-occurrence of genetically confirmed HS and ADTKD has not been previously reported.
It is not possibly to evaluate whether the haemolytic crises due to HS are influencing the progression of the UMOD related renal disease, especially, since the UMOD related kidney disease characteristics in general and in here presented family Fig. Nevertheless, the observed kidney disease in the family is warranting the regular nephrological examinations in paediatric patients in the family in order to recognise elevated serum uric acid as the first signs of tubular dysfunction, since early onset of hyperuricemia treatment may slow the progression of subsequent kidney disease.
Clinical data of five patients of different ages with the co-occurrence of two genetic disorders is extremely valuable and my shed a light on the complex pathophysiology of the genetically based co-morbidity. The study was supported by the financial support from the Slovenian Research Agency research core funding P and P The following are the supplementary data to this article:.
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