Abstract：
:Gastrointestinal tract is one of the main targets of cadmium (Cd), an important food and drinking water contaminant. In the present study, the effect of subchronic (30 days) oral (in water) intake of 5ppm and 50ppm of cadmium on immune responses in the gut was examined in rats. Cadmium consumption resulted in reduction of bacteria corresponding to Lactobacillus strain, tissue damage and intestinal inflammation [increases in high mobility group box 1 (HMGB1 molecules), superoxide dismutase (SOD) and catalase (CAT) activity and proinflammatory cytokine (TNF, IL-1β, IFN-γ, IL-17) content]. Draining (mesenteric) lymph node (MLN) stress response was observed [elevation of MLN glutathione (GSH) and metallothionein (MT) mRNA levels] and stimulation of both adaptive [cellularity, proliferation, proinflammatory (IFN-γ and IL-17) MLN cell cytokine responses] as well as innate immune activity (increases in numbers of NK and CD68(+) cells, oxidative activities, IL-1β). In contrast to proinflammatory milieu in MLN, decreased or unchanged antiinflammatory IL-10 response was observed. Stimulation of immune activities of MLN cells have, most probably, resulted from sensing of cadmium-induced tissue injury, but also from bacterial antigens that breached compromised intestinal barrier. These effects of cadmium should be taken into account when assessing dietary cadmium as health risk factor.
journal_name
Toxicol Lettjournal_title
Toxicology lettersauthors
Ninkov M,Popov Aleksandrov A,Demenesku J,Mirkov I,Mileusnic D,Petrovic A,Grigorov I,Zolotarevski L,Tolinacki M,Kataranovski D,Brceski I,Kataranovski Mdoi
10.1016/j.toxlet.2015.06.002subject
Has Abstractpub_date
2015-09-02 00:00:00pages
89-99issue
2eissn
0378-4274issn
1879-3169pii
S0378-4274(15)00212-Xjournal_volume
237pub_type
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