Effects of 5-hydroxytryptophan on the sleep of normal human subjects.
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5-Hydroxytryptophan↗
Biomedical subjects
A Sjoerdsma
Publications and source records attributed to A Sjoerdsma.
Interactions of tricyclic antidepressants and 5-hydroxyindolealkylamine precursors on spinal monosynaptic reflex transmission.
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5-Hydroxytryptophan↗
Increased protocollagen proline hydroxylase activity in sclerodermatous skin.
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Adolescent↗
Collagen synthesis in human keloid and hypertrophic scar.
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Ascorbic Acid↗
Elevated histaminase activity in medullary carcinoma of the thyroid gland.
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Adult↗
Effects of L-tryptophan (a natural sedative) on human sleep.
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5-Hydroxytryptophan↗
Proline-hydroxylase activity in human blood.
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Adolescent↗
Reactivity to norepinephrine and nature of the alpha adrenergic receptor in vascular smooth muscle of a genetically hypertensive rat.
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Animals↗
Catecholamines-cyclic amp-angiotensin receptors. Plasma catecholamine concentrations in patients with hypertension.
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Adrenal Gland Neoplasms↗
Catecholamines in hypertension.
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Animals↗
Catecholamine metabolism in hypertensive rats.
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Animals↗
Inheritance of high blood-pressure in the spontaneously hypertnsive rat.
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Age Factors↗
Further studies on tryptophan hydroxylase in rat brainstem and beef pineal.
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Animals↗
Studies on the role of catecholamines as regulators of tyrosine aminotransferase.
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Adrenalectomy↗
Direct measurement of the rate of collagen synthesis in skin.
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Acromegaly↗
Effects of para-chlorophenylalanine on sleep in man.
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Animals↗
Antihypertensive and noradrenaline-depleting effects of alpha-methyl-5-hydroxytryptophan in the rat.
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5-Hydroxytryptophan↗
Hormone-induced modifications of free tyrosine in the rat thyroid gland.
The concentrations of free tyrosine in liver, muscle, kidney and thyroid gland were determined in separate groups of rats maintained on a low iodine diet and treated with intraperitoneal injections of thyroxine (T 4), thyrotrophin (TSH) and TSH plus propylthiouracil (PTU). Groups of hypophysectomized rats also were given T 4. Significant changes in tissue tyrosine were generally confined to the thyroid gland. Animals treated with T 4 showed a decrease of mean thyroid tyrosine from 113.3 +/- 17.9 (S.D.) mug/g wet weight of gland to 76.2 +/- 5.7 mug/g (P < 0.01). Although there was little change in content when TSH was given alone, a significant increase in tyrosine levels was observed when TSH plus PTU were administered (P < 0.01). In hypophysectomized rats thyroid tyrosine decreased and was further lowered (to 46.0 +/- 3.1 mug/g; P < 0.05) by T 4 treatment. When tyrosine concentrations were expressed in relation to ribonucleic acid (RNA) or protein content of the assayed gland, all differences in tyrosine content became greater.
Animals↗