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Estrogen May Exacerbate Hypothyroidism.
Estrogen therapy in postmenopausal, hypothyroid women elicits a clinically significant decrease in serum free thyroxine, results of a small study suggest.
These findings suggest that doctors who prescribe estrogen for postmenopausal, hypothyroid: women on thyroxine should measure their patients' serum thyrotropin levels approximately 12 weeks after starting estrogen therapy, said Dr. Baha M. Arafah of Case Western Reserve University, Cleveland (N. Engl. J. Med. 344[23]:1743-49, 2001).
"Women who are taking thyroxine may need more thyroxine when they are treated-with estrogen and may need less-thyroxine after estrogen is discontinued," said Dr. Robert D. Utiger in an accompanying editorial (N. Engl.J. Med. 344 [23]1784-85, 2001).
The study compared 11 euthyroid women and 25 women with -primary hypothyroidism who were ...
- Focus on drips: helpful heparin--not for free thyroxine!(CORRESPONDENCE)(Brief...
- Magazine article from: Bandolier Gamlen, T.R. June 1, 1995 700+ words
...1] but it is most unhelpful for free thyroxine measurements. Parenteral heparin...low doses, produces an artefact with free thyroxine assay methods [2]. Whether thyroid...Artefactual reduction in circulating free thyroxine concentration by radioimmunoassay...
- Standardized assays for free thyroxine sought.(Metabolic Disorders)
- Magazine article from: Family Practice News Boschert, Sherry August 15, 2007 700+ words
The need to measure free thyroxine levels has diminished in the past 2 decades, but it's still...women. There's no consensus, however, on how to measure free thyroxine ([T.sub.4]). Efforts are underway to standardize free...
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- Magazine article from: Internal Medicine News Boschert, Sherry October 1, 2007 700+ words
The need to measure free thyroxine levels has diminished in the past 2 decades, but it's still...pregnant women. But there's no consensus on how to measure free thyroxine ([T.sub.4]). Efforts are underway to standardize free...
- free thyroxine
- Reference information from: The Mosby Medical Encyclopedia October 1, 1996 700+ words
The Mosby Medical Encyclopedia 10-01-1996 free thyroxine, the amount of the unbound thyroid hormone, thyroxine (T4), circulating in the blood. The ideas, procedures and suggestions...
- Scientists at University of Naples report research in veterinary research.
- Newspaper article from: Veterinary Week October 19, 2009 700+ words
...measure free triiodothyronine (fT3) and free thyroxine (fT4) concentrations in the serum of buffalo...immunofluorimetric assay for detection of serum free triiodothyronine and free thyroxine concentrations in buffalo (Bubalus bubalis...
- Research from F. Guclu and co-researchers provides new data on...
- Newspaper article from: Biotech Week June 10, 2009 700+ words
...patients were restored to the euthyroid state. At the beginning and end of the treatment period, serum-free triiodothyronine (FT3), free thyroxine (FT4), thyroid-stimulating hormone (TSH), autoantibodies against thyroid peroxidase...
- Research from Catholic University has provided new information about...
- Newspaper article from: Life Science Weekly July 28, 2009 700+ words
...patients admitted over a 6-year period to our ICU who underwent invasive MV and had measurement of serum free triiodothyronine (M), free thyroxine (M), and thyroid-stimulating hormone (TSH) performed in the first 4 days after ICU admission...
- Serum Free Conditions for Retroviral Vector Mediated Transduction of...
- Newspaper article from: Blood Weekly May 31, 1999 700+ words
Cancer Gene Therapy "Serum Free Conditions for Retroviral Vector Mediated Transduction...supernatants from producer cell lines that were serum-free. We switched the producer cells into the serum-free medium during the 24 hours of collection of...
