التفاصيل البيبلوغرافية
| العنوان: |
Multiple catechols in human plasma after drinking caffeinated or decaffeinated coffee |
| المؤلفون: |
Goldstein, David S., Sullivan, Patti, Corrales, Abraham, Isonaka, Risa, Gelsomino, Janna, Cherup, Jamie, Castillo, Genessis, Holmes, Courtney |
| المصدر: |
J Chromatogr B Analyt Technol Biomed Life Sci |
| سنة النشر: |
2021 |
| مصطلحات موضوعية: |
Article, socio, envir |
| الوصف: |
BACKGROUND: Coffee is one of the most frequently consumed beverages worldwide. Research on effects of coffee drinking has focused on caffeine; however, coffee contains myriad biochemicals that are chemically unrelated to caffeine, including 3,4-dihydroxyphenyl compounds (catechols) such as caffeic acid and dihydrocaffeic acid (DHCA). OBJECTIVE: This prospective within-subjects study examined effects of drinking caffeinated or decaffeinated coffee on plasma free (unconjugated) catechols measured by liquid chromatography with series electrochemical detection (LCED) after batch alumina extraction. To confirm coffee-related chromatographic peaks represented catechols, plasma was incubated with catechol-O-methyltransferase and S-adenosylmethionine before the alumina extraction; reductions in peak heights would identify catechols. METHODS: Ten healthy volunteers drank 2 cups each of caffeinated and decaffeinated coffee on separate days after fasting overnight. With subjects supine, blood was drawn through an intravenous catheter up to 240 minutes after coffee ingestion and the plasma assayed by alumina extraction followed by LCED. RESULTS: Within 15 minutes of drinking coffee of either type, >20 additional peaks were noted in chromatographs from the alumina eluates. Most of the coffee-related peaks corresponded to free catechols. Plasma levels of the catecholamines epinephrine and dopamine increased with both caffeinated and decaffeinated coffee. Levels of other endogenous catechols were unaffected. Plasma DHCA increased bi-phasically, in contrast with other coffee-related free catechols. INTERPRETATION: Drinking coffee—whether caffeinated or decaffeinated—results in the rapid appearance of numerous free catechols in the plasma. These might affect the disposition of circulating catecholamines. The bi-phasic increase in plasma DHCA is consistent with production by gut bacteria. |
| نوع الوثيقة: |
text |
| اللغة: |
English |
| العلاقة: |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8647204Test/ |
| الإتاحة: |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8647204Test/ |
| حقوق: |
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| رقم الانضمام: |
edsbas.3645E332 |
| قاعدة البيانات: |
BASE |
