Familial absorptive hypercalciuria and renal tubular acidosis. 1979

I A Hamed, and A W Czerwinski, and B Coats, and C Kaufman, and D H Altmiller

Hypercalciuria was considered as a secondary condition when associated with familial renal tubular acidosis. Later studies suggested that hypercalciuria could lead to renal tubular acidosis and nephrocalcinosis. Selected members of a family spanning five generations were studied. Renal tubular acidosis was present in eight subjects in three consecutive generations. Increased 24-hour urinary calcium excretion was present in nine subjects in three consecutive generations, alone in the younger generation, and in combination with renal tubular acidosis and nephrocalcinosis in the older generation. Calcium loading tests showed the absorptive nature of hypercalciuria in nine of 18 subjects studied. This report suggests that in this family the absorptive hypercalciuria is an autosomal dominant genetic defect with complete penetrance and variable expressivity which leads to renal tubular acidosis and nephrocalcinosis.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009397 Nephrocalcinosis A condition characterized by calcification of the renal tissue itself. It is usually seen in distal RENAL TUBULAR ACIDOSIS with calcium deposition in the DISTAL KIDNEY TUBULES and the surrounding interstitium. Nephrocalcinosis causes RENAL INSUFFICIENCY. Nephrocalcinoses
D010375 Pedigree The record of descent or ancestry, particularly of a particular condition or trait, indicating individual family members, their relationships, and their status with respect to the trait or condition. Family Tree,Genealogical Tree,Genealogic Tree,Genetic Identity,Identity, Genetic,Family Trees,Genealogic Trees,Genealogical Trees,Genetic Identities,Identities, Genetic,Tree, Family,Tree, Genealogic,Tree, Genealogical,Trees, Family,Trees, Genealogic,Trees, Genealogical
D010710 Phosphates Inorganic salts of phosphoric acid. Inorganic Phosphate,Phosphates, Inorganic,Inorganic Phosphates,Orthophosphate,Phosphate,Phosphate, Inorganic
D002118 Calcium A basic element found in nearly all tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes. Coagulation Factor IV,Factor IV,Blood Coagulation Factor IV,Calcium-40,Calcium 40,Factor IV, Coagulation
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D003404 Creatinine Creatinine Sulfate Salt,Krebiozen,Salt, Creatinine Sulfate,Sulfate Salt, Creatinine
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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