The dietary supplement 5-hydroxytryptophan and urinary 5-hydroxyindole acetic acid.

نویسندگان

  • Roy M Preshaw
  • Daniel Leavitt
  • Gordon Hoag
چکیده

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

New assay for tryptophan and its 5-hydroxyindole metabolites in blood.

We describe a new cation-exchange fluorometry procedure for separation and measurement of three 5-hydroxyindole metabolites of tryptophan in blood. The metabolites are detected and measured via the fluorescence emitted in the visible region when the separated metabolite is added to a hydrochloric acid-ascorbic acid mixture. The assay requires only 30 mm and is both selective and sensitive. The ...

متن کامل

Tryptophan metabolism via serotonin in rats with hexachlorobenzene experimental porphyria.

One of the three pathways for the metabolisation of dietary tryptophan is the formation of serotonin. Tryptophan hydroxylase catalyses the formation of 5-hydroxytryptophan, the first and regulatory step of this biosynthesis. The aim of the present work is to study alterations in this tryptophan metabolism in rats with experimental Porphyria Cutanea Tarda induced by hexachlorobenzene. With this ...

متن کامل

Quantitative analysis of multiple urinary biomarkers of carcinoid tumors through gold-nanoparticle-assisted laser desorption/ionization time-of-flight mass spectrometry.

A simple technique for quantitative analysis of four urinary biomarkers, tryptophan (TRP), 5-hydroxytryptophan (5-HTP), 5-hydroxytryptamine (5-HT) and 5-hydroxyindole acetic acid (5-HIAA) of carcinoid tumors is developed using gold nanoparticles as the assisted matrix in surface-assisted laser desorption/ionization time-of-flight mass spectrometry (SALDI-TOF MS). The optimal SALDI conditions fo...

متن کامل

Spectrophotofluorometry of serotonin in blood platelets.

A rapid sensitive, and reproducible assay for determination of platelet serotonin is reported. Serotonin in extracted into an ascorbic acid solution by freezing and thawing and sonication. Ascorbic acid stabilizes the serotonin in the extract, and added ethanol enhances the final fluorescence of serotonin, which is measured in a concentrated hydrochloric acid medium (activation at 295 nm and em...

متن کامل

Relationship between the absorption of 5 - hydroxytryptophan from an integrated diet , by means of Griffonia simplicifolia extract , and

Relationship between the absorption of 5-hydroxytryptophan from an integrated diet, by means of Griffonia simplicifolia extract, and the effect on satiety in overweight females after oral spray administration. 2 ABSTRACT The management of overweight may include the use of dietary supplements targeted to counter the feeling of hunger. A randomized, double-blind, placebo-controlled trial has been...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne

دوره 178 8  شماره 

صفحات  -

تاریخ انتشار 2008