Circadian rhythms in urinary trace element and electrolyte excretion in children with and without endemic goiter. 1989

G Y Nicolau, and E Kanabrocki, and E Haus, and G Marks, and J H Olwin, and E Kaplan, and L Plîngă, and L Sackett-Lundeen, and E Petrecscu, and E Ungureanu
CI. Parhon Institute of Endocrinology, Bucharest, Romania.

Six boys and six girls 11 +/- 1.5 years of age living in the endemic goiter area of Tîrgovişte, Romania were studied. Three of the children of each sex did have a palpable endemic goiter, three did not. The children followed a diurnal activity pattern synchronized by their school routine and ate their usual three meal diet. Urine was collected at 4-hour intervals over a 24 hour span (six samples). Urinary volume, pH, total (T) solids, protein, glucose, phosphorus, uric acid, urea nitrogen, creatinine, total and nondialyzable (ND) sodium and potassium were determined by conventional methods and the total and nondialyzable (ND) portion of urinary calcium, magnesium, and zinc and the ND portion of aluminum, copper, boron, lead and silicon were determined by an inductively coupled plasma (ICP) system.

UI MeSH Term Description Entries
D008297 Male Males
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D002940 Circadian Rhythm The regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs or environmental and physiological stimuli. Diurnal Rhythm,Nyctohemeral Rhythm,Twenty-Four Hour Rhythm,Nycthemeral Rhythm,Circadian Rhythms,Diurnal Rhythms,Nycthemeral Rhythms,Nyctohemeral Rhythms,Rhythm, Circadian,Rhythm, Diurnal,Rhythm, Nycthemeral,Rhythm, Nyctohemeral,Rhythm, Twenty-Four Hour,Rhythms, Circadian,Rhythms, Diurnal,Rhythms, Nycthemeral,Rhythms, Nyctohemeral,Rhythms, Twenty-Four Hour,Twenty Four Hour Rhythm,Twenty-Four Hour Rhythms
D004197 Disease Reservoirs Animate or inanimate sources which normally harbor disease-causing organisms and thus serve as potential sources of disease outbreaks. Reservoirs are distinguished from vectors (DISEASE VECTORS) and carriers, which are agents of disease transmission rather than continuing sources of potential disease outbreaks. Humans may serve both as disease reservoirs and carriers. Disease Reservoir,Human Disease Reservoirs,Infectious Disease Reservoir,Reservoirs of Infection,Infectious Disease Reservoirs,Disease Reservoir, Human,Disease Reservoir, Infectious,Disease Reservoirs, Human,Human Disease Reservoir,Infection Reservoir,Infection Reservoirs,Reservoir, Disease,Reservoir, Infectious Disease,Reservoirs, Human Disease
D004573 Electrolytes Substances that dissociate into two or more ions, to some extent, in water. Solutions of electrolytes thus conduct an electric current and can be decomposed by it (ELECTROLYSIS). (Grant & Hackh's Chemical Dictionary, 5th ed) Electrolyte
D005260 Female Females
D006043 Goiter, Endemic A form of IODINE deficiency disorders characterized by an enlargement of the THYROID GLAND in a significantly large fraction of a POPULATION GROUP. Endemic goiter is common in mountainous and iodine-deficient areas of the world where the DIET contains insufficient amount of iodine. Endemic Goiter,Endemic Goiters,Goiters, Endemic
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012383 Romania A country in southeastern Europe, bordering the Black Sea, between Bulgaria and Ukraine. The capital is Bucharest. Rumania,Roumania
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor

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