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Biomedical subjects

A L Strickland

Publications and source records attributed to A L Strickland.

At least 19 recordsLinked to original sources
PubMed1993

Long-term results of treatment with low-dose fluoxymesterone in constitutional delay of growth and puberty and in genetic short stature.

This prospective study was designed to assess growth response, side effects, other possible long-term effects, and final adult height in boys treated with the oral androgen, fluoxymesterone. From 1973 to 1984, eighty-two short boys (71 with constitutional delay of growth and puberty [CDGP] and 11 with genetic short stature [GSS]) were treated with daily oral doses of 2.5 mg of fluoxymesterone from 6 to 60 months. Final height assessment was made from 1989 to 1991. A group of 34 untreated boys (26 with CDGP and 8 with GSS) were also followed to assess the accuracy of the Greulich-Pyle and Bayley-Pinneau (GP-BP) and sexual maturity index height prediction methods. During treatment, each patient had a 1.7- to 2.5-fold increase in linear growth velocity. Accelerated velocity (over baseline) continued as long as the bone age was less than 14 years. No adverse androgenic effects (or undue acceleration of puberty) were observed. Final height exceeded pretreatment predictions for CDGP + GSS by 6.1 +/- 3.5 (SD) cm (GP-BP) and 5.4 +/- 3.2 cm (sexual maturity index). It is concluded that a daily oral dose of 2.5 mg of fluoxymesterone can be used to accelerate linear growth in boys with CDGP and GSS when needed to alleviate emotional problems secondary to slow growth and short stature without fear of compromising final adult height.

Adolescent↗
PubMed1983

Measurement of nonenzymatically glucosylated serum protein by an improved thiobarbituric acid assay.

We describe here some useful modifications of the thiobarbituric acid (TBA) assay for measurement of nonenzymatic glucosylation of serum protein. The modified assay minimizes interference by glucose without a lengthy dialysis step, and does not require an independent blank determination. These modifications should make the TBA assay more convenient for evaluating glycemic control in diabetes. Serum protein is first precipitated with cold ethanol to remove endogenous glucose. The protein is then hydrolyzed in an oxalic acid solution to release glucose as hydroxymethylfurfural (HMF). The HMF is reacted with TBA to form a chromophore which is extracted into isobutanol for spectrophotometric analysis (lambda max = 435 nm). The absorbance at 435 nm is corrected by subtracting a blank reading at 500 nm, and the nmol HMF released is determined using a standard curve prepared with pure HMF. Normal values of this assay for both adults and children are 0.38 +/- 0.10 nmol HMF/mg serum protein (means +/- 2 SD). When the assay was applied to serum samples from a group of 39 Type I diabetic children more than 90% of the children exceeded the normal range of the assay.

Adolescent↗
PubMed1982

Thyrotrophin-releasing hormone test: an adverse reaction.

The side effects of intravenous (IV) administration of protirelin (thyrotrophin-releasing hormone [TRH] are usually mild and transient. The loss of consciousness and apical heart tones occurred in two young patients after protirelin injection. The mechanism for the reactions in these patients is not known, but the absence of heart sounds in the presence of no palpable pulse and no obtainable blood pressure should now be included among the adverse effects that may occur after administration of protirelin IV.

Adolescent↗
PubMed1977

Studies of serum testosterone and its reduction products.

Levels of serum testosterone (T) and its metabolites dihydrotestosterone (D) and androstanediol (A) measured by a competitive protein binding method were as follows, respectively: in adult males (mean +/- 1 SD), 435 +/- 114, 41 +/- 11, 43 +/- 12 ng/100 ml; in adult females, 30 +/- 14, 18 +/- 8, 18 +/-9; in prepubertal males, 14 +/- 7, 10 +/- 4, 10 +/- 5; and in prepubertal females, 15 +/- 4, 9 +/- 4, 12 +/- 7. These studies are presented to establish relative normal values for these metabolites in various age groups. To help elucidate the role of testosterone metabolites in certain androgenic disorders, patients with idiopathic hirsutism and gonadal disorders were subjected to short-term stimulation with HCG or ACTH and suppression with dexamethasone. Most patients with idiopathic hirsutism showed suppression of all three androgens (particularly androstanediol). Further comparisons of these androgens may aid in elucidating the problem in idiopathic hirsutism.

Adrenocorticotropic Hormone↗