Results 91 to 100 of about 2,522,863 (212)

Measurement of urinary 5-HIAA: correlation between spot versus 24-h urine collection

Endocrine Connections, 2019
Background: The 24-h urinary output of 5-hydroxyindoleacetic acid (5-HIAA) is used to monitor disease progression and treatment responses of neuroendocrine neoplasms (NENs).
Matilde Calanchini, Michael Tadman, Jesper Krogh, Andrea Fabbri, Ashley Grossman, Brian Shine   +5 more
doaj   +1 more source

Spectrofluorimetric determination of serotonin and 5-hydroxyindoleacetic acid in urine with different cyclodextrin media [PDF]

, 2011
Alternative and sensitive spectrofluorimetric methods for the determination of hydroxyindoles, such as serotonin (5HT) and 5-hydroxyindoleacetic acid (5HIA), were developed on the basis of supramolecular interaction with cyclodextrin (CD) nanocavities ...
Veglia, Alicia Viviana, Bracamonte, Angel Guillermo   +1 more
core   +1 more source

Tumor carcinóide: contributo da ecocardiografia para o diagnóstico.

Acta Médica Portuguesa, 2011
Carcinoid tumors are rare, most commonly originating from the neuroendocrine cells in the gastrointestinal tract. Carcinoid syndrome is characterized by flushing, diarrhea, and bronchospasm.
Pedro Amador, Lígia Mendes, Sara Gonçalves, José Ferreira Santos, Filipe Seixo, Leonor Parreira, Luís Soares   +6 more
doaj   +1 more source

Homovanillic Acid and 5-Hydroxyindoleacetic Acid Cerebrospinal Fluid Levels: A Study With and Without Probenecid Administration of Their Relationship to the State of Consciousness After Head Injury

, 1975
Homovanillic acid (HVA) and 5-hydroxyindoleacetic acid (5-HIAA) concentrations were measured in the lumbar cerebrospinal fluid of 98 patients after closed head injury.
van Woerkom, TCAM, Vecht, CJ, Minderhoud, JM, Teelken, AW   +3 more
core   +1 more source

Direct measurement of homovanillic, vanillylmandelic and 5-hydroxyindoleacetic acids in urine by capillary electrophoresis [PDF]

, 2000
Separation conditions in CE, with a neutral coated capillary and reversed polarity, have been optimised to make direct measurement of vanillylmandelic acid, homovanillic acid and 5-hydroxyindoleacetic acid possible in urine samples without pre-treatment.
L M Jimenez, M Heinanen, C Barbas, ¨á Garcıa   +3 more
core  

Contrast-Enhanced Ultrasound and Somatostatin Receptor Scintigraphy Unveil an Occult Neuroendocrine Tumor With Carcinoid Syndrome and Presumed Small Intestinal Origin – A Case Report

Gastro Hep Advances
A 68-year-old man with postprandial flushing and palpitations was referred for multiple hepatic lesions. Computed tomography showed hypoattenuating metastases without a detectable primary, whereas contrast-enhanced ultrasound revealed arterial ...
Tairyu Sato, Akira Nishio, Tadashi Kegasawa, Kazuna Hazu, Chihiro Tarumi, Koki Yamada, Yuki Nishiura, Kumi Higashihara, Shogo Nagahama, Takayuki Matsumae, Yuki Tokuda, Aya Ishimi, Satoshi Hiyama, Masafumi Ogata, Chiaki Nakai, Keitaro Masuko, Katsumi Yamamoto, Nobuyuki Tatsumi, Yasuyuki Yoshida, Kayako Isohashi, Yoshito Hayashi, Akira Kaneko   +21 more
doaj   +1 more source

Homovanillic acid and 5-hydroxyindoleacetic acid modifications in CSF of patients with stroke and multi-infarct dementia.

, 1985
Thirty four patients who had complete ischemic stroke confirmed by neurologic examination, were divided into three groups according to the time elapsed between the first signs of stroke and lumbar puncture: group A, 22-47 h; group B, 48-71 h; group C, 72-
S R Bareggi, R Pirola, L Ferini-Strambi, M Franceschi, S Smirne, M Camerlingo, G Truci   +6 more
core   +1 more source

A Method For Quantitative Extraction of Urinary 5-Hydroxyindoleacetic Acid

Clinical 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   +2 more sources

Tryptophan Challenge in Healthy Controls and People with Schizophrenia: Acute Effects on Plasma Levels of Kynurenine, Kynurenic Acid and 5-Hydroxyindoleacetic Acid. [PDF]

Pharmaceuticals (Basel), 2022
Sathyasaikumar KV, Notarangelo FM, Kelly DL, Rowland LM, Hare SM, Chen S, Mo C, Buchanan RW, Schwarcz R.   +8 more
europepmc   +1 more source

Impact of plasma 5-hydroxyindoleacetic acid, a serotonin metabolite, on clinical outcome in septic shock, and its effect on vascular permeability. [PDF]

Sci Rep, 2021
Tanaka T, Mori M, Sekino M, Higashijima U, Takaki M, Yamashita Y, Kakiuchi S, Tashiro M, Morimoto K, Tasaki O, Izumikawa K.   +10 more
europepmc   +1 more source