scholarly journals Bartter syndrome in homozygous twins

1996 ◽  
Vol 42 (1) ◽  
pp. 28-29
Author(s):  
Z. I. Levitskaya

Bartter syndrome is characterized by hyperreninemia against the background of hyperplasia of juxtaglomerular cells, hyperaldosteronuria, potassium deficiency, metabolic alkalosis, and vascular resistance to angiotensin.A study of the pathogenetic aspects of this disease allowed a number of authors suppose that this syndrome is associated with autosomal recessive inheritance, in which there may be no sensitivity of vessels to the pressor effect of angiotensin II, impaired renal reabsorption of sodium and chlorine, increased renal production of prostaglandin E. Primary renal defect, leading to the loss of potassium also is not excluded, because bilateral adrenalectomy does not completely reduce hypokalemia. However, it is not always possible to establish a primary genetic defect.The clinical symptoms of this disease are characterized by adynamia, polyuria, polydipsia, headache, and sometimes vomiting. Blood pressure is normal or even low. Children have a lag in mental and physical development.The pathophysiology of clinical symptoms is caused either by a hereditary disorder of tubular reabsorption of potassium and secondary sodium due to an enzymatic defect in the tubule wall, or by resistance of target cells to the stimulation by renin, angiotensin, and aldosterone, the production of which increases due to a disturbed feedback mechanism.In foreign literature, a description of this syndrome is quite rare. This fact was the basis for the publication of a similar clinical syndrome in homozygous twins - brothers A. and D. born in 1967, who were followed up for 3 years.

2021 ◽  
Vol 12 ◽  
Author(s):  
Ana Victoria Marco Hernández ◽  
Miguel Tomás Vila ◽  
Alfonso Caro Llopis ◽  
Sandra Monfort ◽  
Francisco Martinez

Dominant pathogenic variations in the SCN1A gene are associated with several neuro developmental disorders with or without epilepsy, including Dravet syndrome (DS). Conversely, there are few published cases with homozygous or compound heterozygous variations in the SCN1A gene. Here, we describe two siblings from a consanguineous pedigree with epilepsy phenotype compatible with genetic epilepsy with febrile seizures plus (GEFS+) associated with the homozygous likely pathogenic variant (NM_001165963.1): c.4513A > C (p.Lys1505Gln). Clinical and genetic data were compared to those of other 10 previously published patients with epilepsy and variants in compound heterozygosity or homozygosity in the SCN1A gene. Most patients (11/12) had missense variants. Patients in whom the variants were located at the cytoplasmic or the extracellular domains frequently presented a less severe phenotype than those in whom they are located at the pore-forming domains. Five of the patients (41.7%) meet clinical criteria for Dravet syndrome (DS), one of them associated acute encephalopathy. Other five patients (41.7%) had a phenotype of epilepsy with febrile seizures plus familial origin, while the two remaining (17%) presented focal epileptic seizures. SCN1A-related epilepsies present in most cases an autosomal dominant inheritance; however, there is growing evidence that some genetic variants only manifest clinical symptoms when they are present in both alleles, following an autosomal recessive inheritance.


2001 ◽  
pp. 347-351 ◽  
Author(s):  
P Saugier-Veber ◽  
N Drouot ◽  
LM Wolf ◽  
JM Kuhn ◽  
T Frebourg ◽  
...  

Autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED) is clinically characterized by the presence of two of the three major clinical symptoms: Addison's disease and/or hypoparathyroidism and/or chronic mucocutaneous candidiasis. Because of its autosomal recessive inheritance, this rare disorder constitutes an interesting model for understanding the molecular background of autoimmunity. Recently, mutations in the autoimmune regulator (AIRE-1) gene have been identified in APECED patients. Here we report, in a large French APECED family, the identification of a novel AIRE-1 missense mutation (Pro326Leu) in association with the Arg257Stop mutation which is detected in more than 80% of mutant Finnish AIRE-1 alleles. This Pro326Leu substitution occurs in the first plant homeodomain (PHD)-type zinc-finger domain of the protein which has been identified in a number of nuclear proteins involved in chromatin-mediated transcriptional regulation, such as ATRX, TIF1, KRIP-1 and Mi-2 autoantigen. This mutation highlights the key role of this amino acid in the structure of the PHD domain and confirms that exon 8 constitutes a mutational hotspot.


2003 ◽  
Vol 52 (4) ◽  
pp. 68-71
Author(s):  
V. G. Vakharlovsky ◽  
F. K. Lagkueva ◽  
S. O. Kusova ◽  
T. I. Tzidaeva

Data of pregnancy course and delivery in 3 patients with hepatolenticular degeneration (GLD) a rare disease of autosomal recessive inheritance pattern are presented. In one case GLD was diagnosed prior pregnancy and treatment with cuprenil was continued during pregnancy. No progressive GLD clinical symptoms were observed. However pregnancy and delivery appeared to provoke GLD typical manifestations in other two patients. They have not got specific treatment with cuprenil during pregnancy as disease was diagnosed only after delivery. Deliveries in patients with GLD were successful and the newborns were healthy. No evidence of cuprenil teratogenic effect on fetus was revealed in the first case. This GLD is not contraindication for successful pregnancy but it is necessary to use cuprenil for prevention of disease exacerbation.


2006 ◽  
Vol 37 (03) ◽  
Author(s):  
U Gaiser ◽  
J Neuberger ◽  
E Regel ◽  
R Emmert ◽  
M Ries

1970 ◽  
Vol 63 (4) ◽  
pp. 618-624 ◽  
Author(s):  
Y. Kumahara ◽  
Y. Okada ◽  
K. Miyai ◽  
H. Iwatsubo

ABSTRACT A 25-year-old male dwarf and his sister, a 31-year-old woman were investigated. Their respective heights were 114 and 97 cm with proportional statures. Their bone ages were that found in the adult subject. Thyroid functions and metyrapone test were normal and the total urinary gonadotrophin was determined in both cases. HGH secretion was not stimulated by insulin-induced hypoglycaemia, arginine infusion or exercise. Their parents and six other siblings were normal in height. The two patients were therefore assumed to be suffering from an isolated growth hormone deficiency with autosomal recessive inheritance.


1991 ◽  
Vol 28 (4) ◽  
pp. 277-279 ◽  
Author(s):  
J C de Almeida ◽  
D F Reis ◽  
J Llerena Junior ◽  
J Barbosa Neto ◽  
R L Pontes ◽  
...  

2007 ◽  
Vol 143A (3) ◽  
pp. 219-228 ◽  
Author(s):  
Jelena Martinovic-Bouriel ◽  
Céline Bernabé-Dupont ◽  
Christelle Golzio ◽  
Bettina Grattagliano-Bessières ◽  
Valérie Malan ◽  
...  

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