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Autosomal recessive polycystic kidney disease (ARPKD) is the recessive form of polycystic kidney disease. It is associated with a group of congenital fibrocystic syndromes. [ 5 ] Mutations in the PKHD1 (chromosomal locus 6p12.2) cause ARPKD.
PKD is caused by abnormal genes which produce a specific abnormal protein which has an adverse effect on tubule development. PKD is a general term for two types, each having their own pathology and genetic cause: autosomal dominant polycystic kidney disease (ADPKD) and autosomal recessive polycystic kidney disease (ARPKD). [10] [11]
Autosomal dominant polycystic kidney disease (ADPKD) is one of the most common, life-threatening inherited human disorders and the most common hereditary kidney disease. [1] [2] It is associated with large interfamilial and intrafamilial variability, which can be explained to a large extent by its genetic heterogeneity and modifier genes. [1]
Cystic kidney disease includes various conditions related to the formation of cysts in one or both kidneys. The most common subset is polycystic kidney disease (PKD), which is a genetic anomaly with two subsets, autosomal recessive polycystic kidney disease (ARPKD) and autosomal dominant polycystic kidney disease (ADPKD).
Type I is due to autosomal recessive polycystic kidney disease (ARPKD), which occurs at a frequency of approximately one in 16,000 infants. The kidneys of the fetus/neonate will be enlarged, have many small cysts filled with fluid, and will fail to produce an adequate volume of fetal urine.
Fibrocystin is a large, receptor-like protein that is thought to be involved in the tubulogenesis and/or maintenance of duct-lumen architecture of epithelium. [5] FPC associates with the primary cilia of epithelial cells and co-localizes with the Pkd2 gene product polycystin-2 (PC2), suggesting that these two proteins may function in a common molecular pathway.
For more information on autosomal recessive inheritance, see the articles Autosome, Recessive gene and Dominance relationship. Subcategories. This category has the ...
Human polycystin 1 is a huge protein of 4303 amino acyl residues (aas). Its repeated leucine-rich (LRR) segment is found in many proteins. According to the UniProt description, polycystin 1 contains 16 polycystic kidney disease (PKD) domains, one LDL-receptor class A domain, one C-type lectin family domain, and 16-18 putative TMSs in positions between residues 2200 and 4100. [2]