Inhibitory effect of known antioxidants and of press juice from herring (Clupea harengus) light muscle on the generation of free radicals in human monocytes
Artikel i vetenskaplig tidskrift, 2006

Reactive oxygen species (ROS) can cause oxidative stress, which has been linked to various diseases. It has been suggested that antioxidant-rich foods can reduce such oxidative stress. However, the lack of suitable model systems to screen for in vivo effects of food-derived antioxidants has prevented a clear consensus in this area. In this study, the aim was to use a single-cell model system (human monocyte) to evaluate whether certain pure antioxidants and complex muscle extracts (herring light muscle press juice, PJ) could prevent ROS formation under in vivo like conditions. ROS were excreted from the monocytes upon stimulation with phorbol myristate acetate and were then detected as isoluminol-enhanced chemiluminescence (CL). Adding 2000 units of catalase and 50 units of superoxide dismutase to the monocytes model lowered the CL response by 35 and 86%, respectively. Ascorbate (14.1 mM) lowered the response by 99%, alpha-tocoperhol (188 microM) by 37%, and Trolox (50 microM) by almost 100%. Crude herring PJ gave a dose-dependent reduction in the CL response. At 10, 100, and 1000 times dilution, the PJ reduced the CL signal by 93, 60.5, and 10.6%. PJ fractionated into low molecular weight (LMW) (<1000 Da) and high molecular weight (>3500 Da) fractions decreased the CL response by 52.9 and 71.4%, respectively, at a 100-fold dilution. Evaluation of the PJ samples in the oxygen radical absorbance capacity test indicated that proteins may be the primary radical scavenging compounds of PJ, whereas the ROS-preventing effect obtained from the LMW fraction may also be attributed to other mechanisms. Thus, this study proved that the monocyte assay can be a useful tool for studying whether food-derived antioxidants can limit ROS production under physiologically relevant conditions. It also showed that herring contains numerous aqueous compounds demonstrating antioxidative effects in the monocyte model system.

herring

Clupea harengus

free radical

antioxidant

monocyte

press-juice

Författare

Gudjon Gunnarsson

Chalmers

Directorate of Fisheries

Ingrid Undeland

Chalmers, Kemi- och bioteknik, Livsvetenskaper, Livsmedelsvetenskap

Thippeswamy Sannaveerappa

Chalmers, Kemi- och bioteknik, Livsvetenskaper, Livsmedelsvetenskap

Ann-Sofie Sandberg

Chalmers, Kemi- och bioteknik, Livsvetenskaper, Livsmedelsvetenskap

Ann Lindgård

Göteborgs universitet

Lillemor Mattsson Hultén

Göteborgs universitet

Bassam Soussi

Göteborgs universitet

Journal of Agricultural and Food Chemistry

0021-8561 (ISSN) 1520-5118 (eISSN)

Vol. 54 21 8212-8221

Ämneskategorier

Hälso- och sjukvårdsorganisation, hälsopolitik och hälsoekonomi

Livsmedelsvetenskap

DOI

10.1021/jf0604541

PubMed

17032031

Mer information

Senast uppdaterat

2018-09-10