THYROTROPIN

thīˌrätrōˈpĭn or thyroid-stimulating hormone (TSH), hormone released by the anterior pituitary gland that stimulates the thyroid gland to release thyroxine. The release of thyrotropin is triggered by the action of thyrotropin-releasing factor (TRF), a substance found in the hypothalamus of the brain. TRF, once released from the hypothalamus, travels in the bloodstream to the anterior pituitary, where it causes the release of thyrotropin. This latter substance, a glycoprotein (see protein), is carried to the thyroid gland by the blood, where it stimulates the uptake of iodine, the conversion of diiodotyrosine to thyroxine, and the secretion of thyroid hormones into the bloodstream. Thyroxine inhibits the further release of thyrotropin by interfering with the action of TRF; thus the levels of thyroid hormones are regulated. If not enough iodine is available in the diet, then not enough thyroxine will be made to shut off the release of thyrotropin. Prolonged stimulation of the thyroid by thyroid-stimulating hormone results in an abnormal enlargement of the gland, known as goiter, a condition which has been largely eradicated by the widespread usage of iodized salt.

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Thyrotropin
We found: 174 results
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books on: Thyrotropin  - 109 results

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1.
Sleep Deprivation: Basic Science, Physiology, and Behavior
Book by Clete A. Kushida; Marcel Dekker, 2005
Subjects: Sleep Deprivation
...regulation of circadian and pulsatile thyrotropin secretion in normal man and woman...deprivation on the circadian waveform of thyrotropin (TSH): further evidence of sleep...Wittersheim G, Follenius M. Nocturnal plasma thyrotropin variations are related to slow-wave...
2.
Mismatch: Why Our World No Longer Fits Our Bodies
Book by Peter Gluckman, Mark Hanson; Oxford University Press, 2006
Subjects: Ecological Genetics, Evolution (Biology), Genotype-Environment Interaction
...elegant system involving another hormone, thyrotropin, made by the pituitary gland, which...hormone levels in the blood are low, more thyrotropin is secreted and the thyroid gland is...levels are high in the blood, less thyrotropin is secreted. This kind of control system...
3.
Toward Healthy Aging: Human Needs and Nursing Response
Book by Priscilla Ebersole, Patricia Hess; Mosby, 1998
Subjects: Aging, Geriatric Nursing
...function, T 4 , T 3 , T 3 uptake, TSH, and thyrotropin-releasing hormone (TRH) levels are very...Gallo, Reichel and Anderson, 1995). Thyrotropin-releasing hormone . When thyrotropin is injected intravenously, it stimulates...
4.
The Who's Who of Nobel Prize Winners, 1901-2000
Book by Louise S. Sherby; Oryx Press, 2002
Subjects: Biography--20th Century--Dictionaries, Nobel Prizes
...and synthesized three brain hormones thyrotropin-releasing factor, luteinizing-hormone...439 with M. Saffran . Isolation of Thyrotropin Releasing Factor TRF from Porcine Hypothalamus...Roger Guillemin, three brain hormones thyrotropin-releasing factor, luteinizinghormone...
5.
Handbook of Eating Disorders: Physiology, Psychology, and Treatment of Obesity, Anorexia, and Bulimia
Book by Kelly D. Brownell, John P. Foreyt; Basic Books, 1986
Subjects: Eating Disorders
...1978. Studies of growth hormone GH , thyrotropin TSH and prolactin PRL secretion in anorexia...103. Maeda, K. 1976. Effects of thyrotropin-releasing hormone on growth hormone...1975. Serum thyroid hormones and thyrotropin in anorexia nervosa. Journal of Clinical...
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journal articles on: Thyrotropin  - 46 results

       More journal Results: 1-10 11-20 21-30 31-40 41-46 >>  
 
1.
Thyroid Insult: Flame Retardants Linked to Alterations in Pregnant Women's TSH Levels
Journal article by Kellyn S. Betts; Environmental Health Perspectives, Vol. 118, 2010
Subjects: Fireproofing agents--Health aspects, Flame retardants--Health aspects, Pregnant women--Health aspects, Thyroid diseases--Prevention, Thyroid diseases--Risk factors, Thyrotropin--Health aspects
2.
Health Effects Assessment for Environmental Perchlorate Contamination: The Dose Response for Inhibition of Thyroidal Radioiodine Uptake in Humans
Journal article by Monte A. Greer, Gay Goodman, Richard C. Pleus, Susan E. Greer; Environmental Health Perspectives, Vol. 110, 2002
Subjects: American Thyroid Association
...and free), triiodothyronine, and thyrotropin in blood sampled 16 times throughout...hormones: a slight downward trend in thyrotropin levels in morning blood draws during...number of homeostatic mechanisms (14). Thyrotropin (TSH), a hormone synthesized and...
3.
The NAS Perchlorate Review: Adverse Effects?
Journal article by Richard B. Johnston Jr., Richard Corley, Linda Cowan, Robert D. Utiger; Environmental Health Perspectives, Vol. 113, 2005
Subjects: National Academy of Sciences
...no effect on serum thyroid hormone or thyrotropin concentrations measured monthly. Inspection...had no effect on thyroid hormone or thyrotropin production in workers. In epidemiologic...thyroid hormone or increase in serum thyrotropin concentrations (the hallmark of even...
4.
Experimentally Induced Aggressiveness in Adult Children of Alcoholics (ACOAs): Preliminary Behavioral and Neuroendocrine Findings(*)
Journal article by Gilberto Gerra, Amir Zaimovic, Roberto Sartori, Maria Augusta Raggi, Carlotta Bocchi, Ursula Zambelli, Mariaemanuela Timpano, Valeria Zanichelli, Roberto Delsignore, Francesca Brambilla; Journal of Studies on Alcohol, Vol. 60, 1999
Subjects: Children of alcoholics--Physiological aspects, Drinking of alcoholic beverages--Physiological aspects
...alcohol (Moss et al., 1990a) and enhanced thyrotropin response to thyrotropin-releasing hormone (Moss et al., 1986...GUTHRIE, S. AND LINNOILA, M. Enhanced thyrotropin response to thyrotropin releasing hormone in...
5.
Impact of Smoking and Thiocyanate on Perchlorate and Thyroid Hormone Associations in the 2001-2002 National Health and Nutrition Examination Survey
Journal article by Craig Steinmaus, Mark D. Miller, Robert Howd; Environmental Health Perspectives, Vol. 115, 2007
Subjects: Ammonium perchlorate--Research, National Health and Nutrition Examination Survey (Statistical work)--Reports, Smoking--Health aspects, Thiocyanates--Health aspects, Thyroid diseases--Research, Thyroid diseases--Risk factors, Thyroid hormones--Research
...of serum thyroid autoantibodies and thyrotropin concentration elevation and a higher prevalence of mild thyrotropin concentration suppression in the third...Goswami G, Daniels GH. 2005. The thyrotropin reference range should remain unchanged...
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magazine articles on: Thyrotropin  - 8 results

       More magazine Results: 1-8 >>  
 
1.
Latest Research
Magazine article; Medical Economics, Vol. 85, August 15, 2008
...Dementia Linked to Both High and Low Thyrotropin Levels Arch Intern Med. 2008;168...Medical School study found that abnormal thyrotropin levels in women are associated with...developing dementia based on baseline serum thyrotropin concentrations in 1,864 patients who...
2.
Thyroid Function and Dysfunction
Magazine article by John M. Rimoldi; Drug Topics, Vol. 140, October 21, 1996
Subjects: Continuing education, Pharmaceuticals, Pharmacists, Thyroid gland, United States
...stress), the hypothalamus secretes thyrotropin-releasing hormone (TRH), which...thyroid-stimulating hormone (TSH), or thyrotropin, from the anterior pituitary gland...corticosteroids suppress TSH secretion. Thyrotropin-releasing hormone (TRH) assay...
3.
Our Three Miracles
Magazine article by Randy V. Heysek; Medical Economics, Vol. 73, October 28, 1996
Subjects: Physicians, Pregnancy, Premature birth, Prenatal development, Problems, Triplets, United States
...werent a complete solution, her doctor informed us. As a resident in the early 1980s, he had taken part in a study on thyrotropin-releasing hormone. Premature infants whod been treated in utero with TRH in combination with steroids experienced fewer...
4.
New Products
Magazine article; Drug Topics, Vol. 152, January 28, 2008
...months old. Previously the medication was approved only for adults and children above the age of two. Genzymes Thytogen (thyrotropin alfa for injection), (617) 252-7500, can now be used in combination with radioiodine to ablate or destroy the remaining...
5.
Dementia in the Elderly
Magazine article by Ahmed H. Hikal, Ethal M. Hikal; Drug Topics, Vol. 142, October 19, 1998
Subjects: Continuing education, Dementia, Drug therapy, Older people, Pharmacists, United States
...vitamins, e.g., thiamine; neurotransmitter precursors, e.g., tryptophan and tyrosine; and hormones, e.g., thyrotropin-releasing hormone, corticotropin, and vasopressin. Recently, scientists at the National Institute on Aging (NIA...
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newspaper articles on: Thyrotropin  - 4 results

 
 
1.
Now Josh and His Mum Are on a Roll; Life Is a Whizz for Disabled Boy Four Years On
Newspaper article; Evening Gazette (Middlesbrough, England), August 22, 2009
Subjects: Disabled persons
...and, with a little help from the Gazette, successfully fought to get a special injection known as Thyrotropin on the NHS. The Thyrotropin enabled Jenny to keep taking her thyroxine (hormone replacing) medication during treatment, without...
2.
Young Mum's Agony; Jenny Faces Treatment Cash Fight
Newspaper article; Evening Gazette (Middlesbrough, England), March 12, 2008
Subjects: Cancer treatment, Cancer--Care and treatment, Thyroxine
...come off her thyroxine medication. Without the hormone-replacing medication she is left feeling exhausted. But a new Thyrotropin injection could make this a thing of the past. But the 22-year-old, who has a young son with cerebral palsy, was shocked...
3.
The Wake -You-up Pill
Newspaper article; The Daily Mail (London, England), January 8, 2008
...contrary to NHS guidelines;these state that patients should be given hormone treatment only if blood testsshow their levels of thyrotropin (a thyroid-stimulating hormone) are outsidethe normal range. The problem is that Dr Skinner disagrees with the officialdefinition...
4.
Placebo or Panacea
Newspaper article; The Daily Mail (London, England), February 26, 2008
...thyroxinecontrarytoofficial guidelines,whichstatethat patients should be given hormone treatment only if blood tests show theirlevels of thyrotropin (a thyroid-stimulatinghormone) are outside the normal range. The problem is that Dr Skinnerdisagreeswiththe officialdefinitionofwhatis...


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encyclopedia articles on: Thyrotropin  - 7 results

       More encyclopedia Results: 1-7 >>  
 
1.
Thyrotropin
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
THYROTROPIN thi ratro pin or thyroid-stimulating hormone (TSH...the thyroid gland to release thyroxine . The release of thyrotropin is triggered by the action of thyrotropin-releasing factor (TRF), a substance found in the...
2.
Thyroxine
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...Thyroxine activity is controlled by thyrotropin , a substance released from the pituitary...thyroxine regulates the effect of thyrotropin by feedback inhibition, i.e., high levels of thyroxine depress the rate of thyrotropin secretion. Synthetically prepared thyroxine...
3.
Endocrine System
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...hypophysis, the pituitary secretes at least five hormones that directly affect the other endocrine glands. It secretes thyrotropin , which manages thyroid gland activity, adrenocorticotropic hormone (ACTH), which regulates activity of the adrenal cortex...
4.
Pituitary Gland
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...controls the secretion of steroid hormones by the adrenal cortex, which affects glucose, protein, and fat metabolism; thyrotropin controls the rate of thyroxine synthesis by the thyroid gland, which is the principal regulator of body metabolic rate...
5.
Schally, Andrew V
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...medicine with Roger Guillemin and Rosalyn Yalow . He is credited with discovering three hormones produced by the hypothalamus : thyrotropin-releasing hormone, luteinizing hormone-releasing hormone, and follicle-stimulating hormone. Schallys discoveries...
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