Liquid chromatographic determination of taurine in whole blood, plasma and platelets

Anderson, George M.; Durkin, Tracy A.; Chakraborty, Munmun; Cohen, Donald J.

doi:10.1016/s0378-4347(00)83109-6

Cited by 35 publications

(21 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Free and total plasma TRP levels were determined using a high-performance liquid chromatographic-fluorometric system after the addition of 5-hydroxytryptophan internal standard (final concentration 5 mg/ml) and perchloric acid by direct injection (Anderson et al, 1981). Both free and total plasma TRP levels were determined with within-assay and assay-to-assay coefficients of variation of less than 5 and 10%, respectively.…”

Section: Trp and Hormone Assaysmentioning

confidence: 99%

Estradiol and Tryptophan Depletion Interact to Modulate Cognition in Menopausal Women

Amin

Gueorguieva

Cappiello

et al. 2006

Neuropsychopharmacol

View full text Add to dashboard Cite

Despite an abundance of data in animals, there is little research in humans regarding how estrogen and serotonin (5-HT) may interact to influence cognition. Through the use of estrogen treatment (ET) and tryptophan depletion (TRP-D) in a within-subject design involving healthy menopausal women, we have manipulated both estrogen and 5-HT in order to evaluate their individual and joint effects. Although neither manipulation influenced visuospatial learning, a significant interaction suggested that estrogen exerted a protective effect on verbal memory, such that TRP-D impaired performance to a greater extent before the administration of ET. In consonance with this finding, ET was associated with a small, but positive mood effect on the day following active TRP-D. In addition, ET significantly improved letter-cued verbal fluency with and without TRP-D. Finally, time since last menstrual period was significantly associated with verbal memory scores, such that longer length of hypogonadism resulted in decreased verbal memory performance. These data support the interaction of estrogen and 5-HT in nonreproductive behavior in humans as well as highlight the role of ovarian steroids in cognition.

show abstract

Section: Trp and Hormone Assaysmentioning

confidence: 99%

Estradiol and Tryptophan Depletion Interact to Modulate Cognition in Menopausal Women

Amin

Gueorguieva

Cappiello

et al. 2006

Neuropsychopharmacol

View full text Add to dashboard Cite

show abstract

“…AMPT was measured by reverse phase HPLC with fluorescence detection. The procedure used was adapted from that of Anderson et al (1981) for tyrosine and tryptophan. Sample preparation was similar to that originally used by Engelman et al (1968) to measure plasma AMPT, except that following protein precipitation we used HPLC to enable separation of AMPT from tyrosine.…”

Section: Ampt Plasma Analysismentioning

confidence: 99%

Imaging D2 Receptor Occupancy by Endogenous Dopamine in Humans

Laruelle

D’Souza

Baldwin

et al. 1997

Neuropsychopharmacology

251

193

View full text Add to dashboard Cite

“…This confirms previous observations made using IIPLC 7 • .1(1. 41 but, more importantly, extends the finding to include the spectrofluorimctric procedure. ':' Studies using other proccduresf" 4ll have demonstrated marked decreases in serotonin level assayed with increasing time of storage.…”

Section: Methods Comparisons and Analytical Variablesmentioning

confidence: 62%

“…Parallel IIPLC determinations in this study were run both with and without carbon monoxide pre-treatment as recommended by Korpi''" and Anderson et al 41 respectively. The excellent correlation we obtained between the two HPLC procedures, therefore, contradicts a previous observation by Korpi'" that direct protein precipitation with concentrated perchloric acid totally destroys serotonin in whole blood and that degradation cannot be prevented simply by using EDTA and ascorbic acid as suggested previously," 44.…”

Section: Methods Comparisons and Analytical Variablesmentioning

confidence: 99%

See 1 more Smart Citation

Blood Serotonin Levels in Adults, Autistic and Non-Autistic Children—With a Comparison of Different Methodologies

Badcock

Spence

Stern³

1987

Ann Clin Biochem

View full text Add to dashboard Cite

SUMMARY.Recent interest in conditions associated with increased blood serotonin level has highlighted the need for consistency between assay methods to allow for more accurate delineation of serotinin variables. To this end, comparison was made between a spectrofluorimetric technique frequently used in the past and two potentially more specific high performance liquid chromatographic procedures. Normal ranges and diurnal variations for blood serotonin in adults, normal, autistic children and children with developmental dysphasia were also determined. No significant difference was found between serotonin level in blood drawn by simultaneous venepuncture and capillary (fingerprick) collection. Whilst there was no evidence of circadian rhythm, seasonal variation with mean blood serotonin levels significantly lower in summer than in two successive winters was suggested. Blood serotonin values in normal children tended to decline with increasing age. No similar maturational effect was apparent in autistic children. The mean level for autistic children in winter was significantly higher than that for normal children in the same 'Season; despite this there was considerable overlap of blood serotonin levels between normal and autistic groups. Serotonin levels determined by the three different methodologies showed a high correlation but differed significantly: caution should be exercised when comparing blood serotonin results where different methods are employed.

show abstract

Liquid chromatographic determination of taurine in whole blood, plasma and platelets

Cited by 35 publications

References 12 publications

Estradiol and Tryptophan Depletion Interact to Modulate Cognition in Menopausal Women

Estradiol and Tryptophan Depletion Interact to Modulate Cognition in Menopausal Women

Imaging D2 Receptor Occupancy by Endogenous Dopamine in Humans

Blood Serotonin Levels in Adults, Autistic and Non-Autistic Children—With a Comparison of Different Methodologies

Contact Info

Product

Resources

About