Results 21 to 30 of about 69 (69)

Analysis of Tryptophan Metabolic Profile Characteristics and Clinical Value in Differentiated Thyroid Cancer Patients

open access: yesCancer Medicine, Volume 14, Issue 6, March 2025.
ABSTRACT Background Differentiated thyroid cancer (DTC) is the primary subtype of thyroid cancer. Timely diagnosis and intervention are crucial for improving prognosis and survival. However, the effectiveness of existing serum markers is limited, necessitating the discovery of new biomarkers.
Qiang Miao   +6 more
wiley   +1 more source

Multimodal Metabolomic Analysis Reveals Novel Metabolic Disturbances in Adults With Early Treated Phenylketonuria

open access: yesJIMD Reports, Volume 66, Issue 2, March 2025.
ABSTRACT Phenylketonuria (PKU) is an inborn error of metabolism responsible for an accumulation of phenylalanine, which leads to cognitive and developmental disorders if left untreated. Most studies of adult PKU focus on neuropsychiatric complications, but new questions have been raised about systemic manifestations of PKU in adulthood.
Yann Dos Santos   +7 more
wiley   +1 more source

A Method For Quantitative Extraction of Urinary 5-Hydroxyindoleacetic Acid

open access: yesClinical Chemistry, 1964
Abstract A method for the quantitative assay of urinary 5-hydroxyindoleacetic acid (5 HIAA) is presented. The limits of accuracy and precision obtained reflect good recovery and reproducibility. The relatively high recovery is largely due to maintaining a low distribution coefficient of 5-HIAA during purification of the aqueous extract ...
openaire   +3 more sources

Specific Photometric Determination of 5-Hydroxyindoleacetic Acid in Urine [PDF]

open access: yesClinical Chemistry, 1973
Abstract Udenfriend‘s nitrosonaphthol test for 5-hydroxyindoleacetic acid (5-HIAA) is subject to interference by urinary phenolic acids and drug metabolites. Studies in our laboratory have shown that the specificity and sensitivity of the nitrosonaphthol reaction with 5-hydroxyindoles can be greatly enhanced by the addition of 2 ...
openaire   +2 more sources

Urinary Excretion of 5-Hydroxyindoleacetic Acid in Rosacea*

open access: yesJournal of Investigative Dermatology, 1961
N. R. Rowell, Jean W. Summerscales
openaire   +3 more sources

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