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J S Cook

Publications and source records attributed to J S Cook.

78 records · Page 5Linked to original sources

Nonsolvent water in human erythrocytes.

From the ability of a concentrated suspension of human erythrocytes to regulate the pH of unbuffered, anisotonic, external media it is possible to calculate the fractional cell volume in which chloride is dissolved. The difference between this volume and the total cell water gives the nonsolvent water (for chloride) of the cell. Nonsolvent water is less than 3% of the isotonic cell volume. The quantity of nonsolvent water per cell may increase as the cells shrink in hypertonic solutions.

Buffers↗

Pubertal arrest associated with valproic acid therapy.

Valproic acid has previously been demonstrated to decrease the secretion of multiple pituitary hormones; however, clinical symptoms associated with decreased hormone secretion have not been described. A girl is reported with complex partial seizures who was treated with valproic acid from age 10 years, 7 months to 12 years, 1 month and during this time had an arrest of both growth and secondary sexual development. Two months after discontinuing valproic acid she had resumption of both pubertal growth and maturation. A prospective controlled study is needed to determine more precisely the effects of valproic acid on growth and development.

Body Height↗