A J Hamstra
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Explore the profile of A J Hamstra including associated specialties, affiliations and a list of published articles.
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19
Citations
393
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Recent Articles
1.
Chesney R, Hamstra A, Phelps M, DeLuca H
Kidney Int Suppl
. 1983 Nov;
15:S63-9.
PMID: 6584678
Serum vitamin D metabolites were measured in relation to factors responsible for the synthesis of 1,25(OH)2D in children with renal disease and other disorders of vitamin D metabolism. Severe renal...
2.
Chesney R, Mazess R, Rose P, Hamstra A, DeLuca H, Breed A
Pediatrics
. 1983 Apr;
71(4):559-67.
PMID: 6300745
Ten patients with hypophosphatemic rickets (eight with X-linked familial form) were treated with vitamin D2 (10,000 to 75,000 units per day) and oral phosphate (1.5 to 3.6 gm) for a...
3.
Chesney R, Hamstra A, Mazess R, Rose P, DeLuca H
Kidney Int
. 1982 Jan;
21(1):65-9.
PMID: 6978962
Vitamin D metabolites were measured in children, untreated with glucocorticoids, who had renal disease. Two groups were defined in relation to endogenous creatinine clearance values: those with impaired clearance ,...
4.
Chesney R, Rosen J, Hamstra A, Smith C, Mahaffey K, DeLuca H
J Clin Endocrinol Metab
. 1981 Jul;
53(1):139-42.
PMID: 6972382
The serum concentrations of the vitamin D metabolites 25-hydroxyvitamin D2 (25OHD2), 25-hydroxyvitamin D3 (25OHD3), and 1,25-dihydroxyvitamin D (calcitriol) have been measured in normal subjects whose ages varied from 18 months...
5.
Chesney R, Hamstra A, DeLuca H, Horowitz S, Gilbert E, Hong R, et al.
J Pediatr
. 1981 Jun;
98(6):919-22.
PMID: 7229793
No abstract available.
6.
Chesney R, Hamstra A, DeLuca H
Am J Dis Child
. 1981 Jan;
135(1):34-7.
PMID: 6969986
Rickets, hypocalcemia, hypophosphatemia, and hyperparathyroidism were found in a low-birth-weight premature infant. The concentration of plasma calcitriol (1,25-dihydroxyvitamin D) was 145 pg/mL. With additional exogenous calcitriol (37.5 ng/kg/24 hr) given...
7.
Marx S, Swart Jr E, Hamstra A, DeLuca H
J Clin Endocrinol Metab
. 1980 Nov;
51(5):1138-42.
PMID: 6893458
We monitored the course of pregnancy in a 28-yr-old patient with hereditary insensitivity to 1,25-dihydroxyvitamin D (1,25-(OH)2D). During pregnancy, she received 1,24-(OH)2D3 in doses of 17--36 micrograms/day (usual dose for...
8.
Sweet R, Males J, Hamstra A, DeLuca H
Ann Intern Med
. 1980 Aug;
93(2):279-80.
PMID: 7406381
Measurements of 1,25 (OH)2D3 and other metabolites of vitamin D in a patient with oncogenic osteomalacia confirm the selective, reversible deficiency of 1,25 (OH)2D3 in this syndrome, and indicate the...
9.
Chesney R, Rosen J, Hamstra A, DeLuca H
Am J Dis Child
. 1980 Feb;
134(2):135-9.
PMID: 7352436
Using a precise assay for 1,25-dihydroxyvitamin D in serum, the levels in 103 children, aged 13 months to 16 years, were found to be 43 +/- 2 pg/mL (mean +/-...
10.
Chesney R, Mazess R, Rose P, Hamstra A, DeLuca H
Am J Dis Child
. 1980 Feb;
134(2):140-3.
PMID: 6243443
Serum 25-hydroxyvitamin D (25-OH-D) and 1,25-dihydroxyvitamin D (1,25-(OH)2D) and bone mineral content by the photon-absorption technique were determined in eight patients with X-linked hypophosphatemic rickets treated for at least 24...