Kaffee und Coffein

Eichler, Oskar; Ammon, H. P. T.

doi:10.1007/978-3-642-66150-1

Cited by 36 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The effect of caffeine on blood pressure is generally thought to be mainly due to an increase in cardiac output rather than an increase in the peripheral resistance, since caffeine has been demonstrated to possess vasodilating effects (Eichler, 1975;Sebok, 1950;Somlyo & Somlyo, 1968). In the present study, however, only adaptation of blood pressure to heavy coffee consumption (eight cups/day for 4 weeks) was measured.…”

Section: Discussionmentioning

confidence: 99%

Adaptation of blood pressure to continuous heavy coffee drinking in young volunteers. A double‐blind crossover study.

Ammon¹,

Bieck²,

Mandalaz³

et al. 1983

Brit J Clinical Pharma

View full text Add to dashboard Cite

1 In a double-blind crossover trial, the effect of 4 week daily ingestion of eight cups of regular coffee (corresponding to 504 mg caffeine) vs eight cups of decaffeinated coffee was studied. Blood pressure, heart rate and urinary catecholamines were measured in eight healthy, young volunteers. 2 In both groups, regular coffee immediately led to a significant increase in mean blood pressure (+ 3 and + 5 mm Hg respectively). The difference between both groups, however, existed only in the first 3 to 5 days of ingestion of regular coffee. On day 5 after ingestion of regular coffee, and thereafter in weekly intervals, no significant increase in catecholamine excretion was observed. 3 The data suggest that long-term consumption of large amounts of coffee leads to only a small and transient rise in mean blood pressure. This may be due to an adaptation phenomenon. 4 Therefore, continuous heavy coffee ingestion (eight cups/day for 4 weeks) by young persons does not appear to involve a risk of the development of hypertension.

show abstract

Section: Discussionmentioning

confidence: 99%

Adaptation of blood pressure to continuous heavy coffee drinking in young volunteers. A double‐blind crossover study.

Ammon¹,

Bieck²,

Mandalaz³

et al. 1983

Brit J Clinical Pharma

View full text Add to dashboard Cite

show abstract

“…Kawa arabika słynie z łagodnego i harmonijnego aromatu, natomiast aromat robusty określa się jako ziemisty i surowy. Wymienia się również gatunek Coffea liberica, który stanowi mniej niż 1% światowej produkcji kawy (Bonenberg, 2007;Brőhan, Huybrighs, Wouters i Van der Bruggen, 2009;Eichler, 1976;González, Pablos, Martin, León-Camacho i Valdenebro, 2001;Wasielewski, 2003;Wintgens, 2004).…”

Section: The Role Of Coffee In Tourismunclassified

Nowe trendy w pracy przewodnickiej

2022

View full text Add to dashboard Cite

show abstract

“…Various effects of caffeine on living organisms have been reported by many authors (for reviews see e,g., [4,7,9,20,21]). The data and the conclusions are partially contradictory.…”

Section: Introductionmentioning

confidence: 97%

“…The sequence of treatment; treatment only before irradiation leads to additive effects, whereas an enhancement is found, when caffeine is present after irradiation [1,12]. 4. The concentration of caffeine; high concentrations (more than 1 mM) are more effective than low ones [22].…”

Section: Introductionmentioning

confidence: 99%

Effects of a combination of X-rays and caffeine on preimplantation mouse embryos in vitro

Müller

Streffer

Fischer-Lahdo

1983

Radiat Environ Biophys

View full text Add to dashboard Cite

The influence of a combination of caffeine (0.1 mM, 1 mM, or 2 mM) and X-rays (0.24 Gy, 0.94 Gy, or 1.88 Gy) on preimplantation mouse embryos in vitro was studied under different conditions. The agents were applied either singly or in combination. The embryos were irradiated in the G2-phase of the two-cell stage (28 h p. c. or 32 h p. c.) either 1 h after or immediately before application of caffeine. Caffeine was present during the whole incubation period (until 144 h p. c.). The effects on the microscopic visible development (formation of blastocysts 96 h p. c., hatching of blastocysts 144 h p. c.) and on the cell numbers of embryos at different times (48 h p. c., 56 h p. c., 96 h p. c., 144 h p. c.) were determined. We found conditions under which caffeine markedly enhanced radiation risk, i.e., under which the combination effect exceeded the sum of the single effects. This is true, in particular, for the embryonal development, for which the risk may almost be doubled, whereas the enhancement of risk is not so great for the proliferation of cells. In some cases the combination results lie even outside the envelope of additivity in the range of supra-additivity. The amount of caffeine necessary for such marked effects, however, is so high (at least 1 mM caffeine for rather long times), that it is almost impossible to reach them in vivo by consumption of caffeine-containing beverages.

show abstract

Kaffee und Coffein

Cited by 36 publications

References 0 publications

Adaptation of blood pressure to continuous heavy coffee drinking in young volunteers. A double‐blind crossover study.

Adaptation of blood pressure to continuous heavy coffee drinking in young volunteers. A double‐blind crossover study.

Nowe trendy w pracy przewodnickiej

Effects of a combination of X-rays and caffeine on preimplantation mouse embryos in vitro

Contact Info

Product

Resources

About