scholarly journals Trace elements and rat pouchitis.

2012 ◽  
Vol 59 (4) ◽  
Author(s):  
Sławomira Drzymała-Czyż ◽  
Tomasz Banasiewicz ◽  
Stanisław Walas ◽  
Tomasz Kościński ◽  
Ewa Wenska-Chyży ◽  
...  
Keyword(s):  
Trace Elements ◽  
Restorative Proctocolectomy ◽  
Inductively Coupled Plasma ◽  
Complete Removal ◽  
Control Group ◽  
Slight Reduction ◽  
Inductively Coupled ◽  
The Status ◽  
Plasma Mass Spectrometry ◽  
Inflammatory Changes

The procedure of restorative proctocolectomy is associated with a complete removal of the colon and slight reduction of ileum length, which together can lead to systemic shortages of trace elements. Inflammatory changes in the pouch mucosa may also have some impact. However, there is no data on trace elements in pouchitis. Therefore, in the present study we aimed to assess the effect of acute pouchitis on the status of selected trace elements in rats. Restorative proctocolectomy with the construction of intestinal J-pouch was performed in twenty-four Wistar rats. Three weeks after the surgery, pouchitis was induced. Eight untreated rats created the control group. Liver concentrations of selected micronutrients (Zn, Cu, Co, Mn, Se) were measured in both groups six weeks later, using inductively coupled plasma mass spectrometry. Liver concentrations of trace elements did not differ between the study and the control groups. However, copper, cobalt and selenium concentrations [μg/g] were statistically lower (p

scholarly journals Short-term ingestion of chlorogenic or caffeic acids decreases zinc but not copper absorption in rats, utilization of stable isotopes and inductively-coupled plasma mass spectrometry technique

1998 ◽  
Vol 80 (6) ◽  
pp. 575-584 ◽  
Author(s):  
Charles Coudray ◽  
Carole Bousset ◽  
Jean C. Tressol ◽  
Denise Pépin ◽  
Yves Rayssiguier
Keyword(s):  
Mass Spectrometry ◽  
Stable Isotopes ◽  
Trace Elements ◽  
Chlorogenic Acid ◽  
Inductively Coupled Plasma ◽  
Control Group ◽  
Inductively Coupled ◽  
Mass Spectrometry Technique ◽  
Plasma Mass Spectrometry ◽  
Spectrometry Technique

The amount of dietary trace elements absorbed from a meal depends, among other factors, on the quantities of certain minor plant constituents present in the meal. These substances can act as ligands and bind trace elements in the digestive tract in available or unavailable forms for absorption. The present study was designed to investigate the extent to which different polyphenols (PP) may influence Zn and Cu absorption in rats. Different PP of nutritional interest (chlorogenic acid, caffeic acid, catechin and rutin) were studied using meals extrinsically-labelled with stable isotopes67Zn and 65Cu. Male Wistar rats were fed on a non-labelled semi-synthetic diet containing (mg/kg) 38 Fe, 35 Zn and 7·5 Cu for 8 d. PP were dissolved in dimethyl sulfoxide as the solvent and added to the meal at 1 g/kg during 3 d before isotope administration and until the end of the experiment (a further 3 d). The control group received the dimethyl sulfoxide only. After overnight food deprivation, rats were fed on the labelled test meals (4 g diet+0·1 mg 67Zn and 0·1 mg 65Cu) with 0·5 mg Dy as a faecal marker. Faeces and urine pools were collected for 3 d and analysed for 67Zn and65 Cu isotopic enrichment using the inductively-coupled plasma mass spectrometry technique. Zn absorption was significantly less in rats fed on chlorogenic acid or caffeic acid than in the control group. Catechin ingestion non-significantly inhibited 67Zn absorption. However, the PP studied were without effect on Cu absorption. The study illustrates the effect of metal-binding phenolic compounds on mineral nutrition in the rat, and the possible importance of the effects of different foods rich in these compounds on mineral absorption in man.

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