Results 11 to 20 of about 2,522,863 (212)

Serum and plasma 5-hydroxyindoleacetic acid as an alternative to 24-h urine 5-hydroxyindoleacetic acid measurement [PDF]

Annals of Clinical Biochemistry: International Journal of Laboratory Medicine, 2016
Background Neuroendocrine tumours are slow growing tumours known to secrete a variety of vasoactive peptides which give rise to symptoms of the carcinoid syndrome. The diagnosis and monitoring of patients with neuroendocrine tumours is undertaken in many centres using 24 h urinary measurement of 5 ...
Adaway, J E, Dobson, R, Walsh, J, Cuthbertson, D J, Monaghan, P J, Trainer, P J, Valle, J W, Keevil, B G   +7 more
openaire   +3 more sources

Psychopathology and 5-hydroxyindoleacetic acid excretion [PDF]

Journal of Psychiatric Research, 1965
Abstract Schizophrenics and nonschizophrenics do not differ in urinary excretion of 5-hydroxyindoleacetic acid on either a concentration or 24 h basis, nor do they differ in variability of excretion. Although a pattern was observed of decreasing psychopathology with increasing 5-hydroxyindoleacetic acid excretion, this pattern may be related to ...
Yuwiler, Arthur
openaire   +5 more sources

Autoimmune Pancreatitis Associated with High Levels of Chromogranin A, Serotonin and 5-Hydroxyindoleacetic Acid [PDF]

Case Reports in Gastroenterology, 2008
We report a case of a male patient with autoimmune pancreatitis in whom biochemical examination revealed high plasma chromogranin A concentrations, histological demonstration of a small lymphocytic infiltrate and rapid decrease in size of the pancreatic ...
Elisabetta Nobili, Raffaele Pezzilli, Donatella Santini, Cristina Campidelli, Lucia Calculli, Riccardo Casadei, Guido Biasco   +6 more
doaj   +2 more sources

Increase of Urinary 5-Hydroxyindoleacetic Acid Excretion but Not Serum Chromogranin a Following Over-The-Counter 5-Hydroxytryptophan Intake [PDF]

Canadian Journal of Gastroenterology, 2008
BACKGROUND: 5-hydroxyindoleacetic acid (5-HIAA) excretion is commonly measured for biochemical detection of carcinoid tumours. A 77-year-old woman was referred for elevated 24 h urine 5-HIAA excretion (510 μmol/day; normal is less than 45 μmol/day) and ...
Tisha Joy, Grace Walsh, Sonya Tokmakejian, Stan HM Van Uum   +3 more
doaj   +2 more sources

Comparison of Serum and Urinary 5-Hydroxyindoleacetic Acid as Biomarker for Neuroendocrine Neoplasms. [PDF]

J Endocr Soc, 2021
Context: Patients with serotonin-secreting neuroendocrine neoplasms (NENs) have increased serum 5-hydroxyindoleacetic acid (5HIAA) concentrations. Serum 5HIAA thus serves as a biomarker in NEN. Objective: To evaluate an improved tandem mass spectrometric
Becker A, Schalin-Jäntti C, Itkonen O.
europepmc   +2 more sources

Prevalence, one-year-incidence and predictors of carcinoid heart disease

Cardiovascular Ultrasound, 2023
Background Carcinoid heart disease (CHD) caused by neuroendocrine tumours (NET) is associated with an increased morbidity and mortality due to valvular dysfunction and right sided heart failure.
Isabel Mattig, Maximilian Richard Franke, Rene Pschowski, Anna Brand, Karl Stangl, Fabian Knebel, Henryk Dreger   +6 more
doaj   +1 more source

Impact of Long-Rope Jumping on Monoamine and Attention in Young Adults

Brain Sciences, 2021
Previous research has shown that rope jumping improves physical health; however, little is known about its impact on brain-derived monoamine neurotransmitters associated with cognitive regulation.
Masatoshi Yamashita, Takanobu Yamamoto
doaj   +1 more source

Mechanism of Opsoclonus-Myoclonus Syndrome

Pediatric Neurology Briefs, 1995
Cerebrospinal fluid measurements of the serotonin metabolite 5-hydroxyindoleacetic acid (5-HIAA) and the dopamine metabolite homovanillic acid (HVA) in samples from 27 children with opsoclonus-myoclonus syndrome and 47 controls are reported from the ...
J Gordon Millichap
doaj   +1 more source

Urine 5-Hydroxyindoleacetic Acid Negatively Correlates with Migraine Occurrence and Characteristics in the Interictal Phase of Episodic Migraine. [PDF]

Int J Mol Sci
Although migraine belongs to the main causes of disability worldwide, the mechanisms of its pathogenesis are poorly known. As migraine diagnosis is based on the subjective assessment of symptoms, there is a need to establish objective auxiliary markers ...
Fila M, Chojnacki J, Derwich M, Chojnacki C, Pawlowska E, Blasiak J.   +5 more
europepmc   +2 more sources

Dietary flavonols contribute to false-positive elevation of homovanillic acid, a marker of catecholamine-secreting tumours [PDF]

, 2011
Background: Urinary homovanillic acid (HVA) measurement is used routinely as a marker of the first test for the screening of catecholamine-secreting tumors and dopamine metabolism, but generates a large number of false-positive results.
Crozier, A., Davidson, D.F., Michael E.J. Lean, Alan Crozier, Lean, M.E.J., Boyle, James, Combet, E., James G. Boyle, Emilie Combet, D. Fraser Davidson   +9 more
core   +1 more source