Aim To investigate the influence of probiotic pre-treatment on the permeation of the antidiabetic drug gliclazide in healthy and diabetic rats. Methods Wistar rats (age 2–3 months, weight 350 ± 50 g) were randomly allocated into one of 4 groups (N = 16 each group): healthy control, healthy probiotic, diabetic control, and diabetic probiotic. Probiotics (75 mg/kg, equal quantities of Lactobacillus acidophilus, Bifidobacterium lactis, and Lactobacillus rhamnosus) were administered twice a day for three days to the appropriate groups after diabetes had been induced with alloxan i.v. 30 mg/kg. Rats were sacrificed, ileal tissues mounted in Ussing chambers and gliclazide (200 µg/mL) was administered for the measurement of the mucosal to serosal absorption Jss(MtoS) and serosal to mucosal secretion Jss(StoM) of gliclazide. Results Treatment of healthy rats with probiotics reduced Jss(MtoS) of gliclazide from 1.2 ± 0.3 to 0.3 ± 0.1 µg/min/cm2 (P < 0.01) and increased Jss(StoM)from 0.6 ± 0.1 to 1.4 ± 0.3 (P < 0.01) resulting in net secretion while, in diabetic tissues, treatment with probiotics increased both Jss(MtoS) and Jss(StoM)fluxes of gliclazide to the comparable levels of healthy tissues resulting in net absorption. Discussion In healthy rats, the reduction in Jss(MtoS) after probiotics administration could be explained by the production of bacterial metabolites that upregulate the mucosal efflux drug transporters Mrp2 that control gliclazide transport. In diabetic rats, the restored fluxes of gliclazide after probiotic treatment, suggests the normalization of the functionality of the drug transporters resulting in a net absorption. Conclusion Probiotics may alter gliclazide transport across rat ileal tissue studied ex vivo.

The aim of this study was to evaluate the presence of atherosclerotic plaque of head and neck blood vessels and to determine the dynamics of circulation through the brain blood vessels in patients with systemic lupus erythematosus (SLE). In 35 patients with SLE aged 37.67+/-9.96 and whose disease lasted 3.8+/-4.51 years, Doppler carotid ultrasonography was used to identify the presence of intima-media thickness or atherosclerotic plaque. Brain perfusion scintigraphy was done in 15 out of 35 patients in order to evaluate the dynamics in circulation through carotid and cerebral media arteries. Measured by Doppler ultrasound, 2/35 of examined lupus patients had a plaque and the 2/35 had an intimal-medial thickness. The results of perfusion scintigraphy in 15 examined patients out 35 with SLE showed that 5/15 had mild circulatory changes in carotidogram. 4/15 patients had mild changes in cerebra media arteries circulation, 1/15 had severe changes in carotid circulation and 5/15 patients had normal brain scintigraphy finding. Some of the patients with SLE have atherosclerotic changes and only the early detection of atherosclerosis may provide an opportunity for therapeutic intervention.