0629). There was no statistical significance between males and females in all parameters.”
“Human clonorchiasis, caused by infection with the trematode Clonorchis sinensis, is a common health problem
in East Asia. In an attempt to develop a new, sensitive method for the diagnosis of the disease, the use of a real-time PCR (targeting the internal-transcribed-spacer-2 sequence of the parasite) to detect C. sinensis-specific DNA in faecal samples has recently been evaluated. The PCR-based assay, which included an internal control to detect any inhibition of the amplification by faecal constituents in the sample, was performed on stool samples and on DNA controls representing a wide range of intestinal microorganisms. The assay appeared very specific, Vactosertib TGF-beta/Smad inhibitor only showing positivity with C. sinensis and Opisthorchis felineus. The sensitivity of the assay was explored by testing 170 pre-selected samples of human faeces, from an endemic area of South Korea, which had known (microscopically-determined) densities of C. sinensis eggs. The sensitivity of the assay was 100% for the 74 samples that each had >100
eggs/g and 91.4% for the other 70 samples found egg-positive by microcopy (i.e. those that had <= 100 eggs/g). Three of the 26 samples that appeared egg-negative by microscopy were found PCR-positive. selleckchem Encouragingly, the PCR cycle-threshold values, which reflect parasite-specific DNA loads, showed significant correlation with the egg counts. The real-time PCR used in this study therefore appears to be a powerful tool for both the detection and quantification of C. sinensis infections.”
“Autoantibodies from patients with celiac disease (CD) can influence transglutaminase 2 (TG2) activity and its cellular functions, but the exact mechanisms have remained unknown. Our objective was to
study whether autoantibodies could modulate TG2 binding to heparin/heparan sulfate (HS) and intestinal epithelial cell attachment to fibronectin-TG2 matrix. Anti-TG2 antibodies were purified by TG2 affinity chromatography from sera of patients with active CD. Serum and antibody effects on TG2 binding to heparin/HS, on transamidase activity of TG2, as well as on Caco-2 cell attachment to fibronectin-TG2 matrix were assessed using microplate assays. Both sera and purified anti-TG2 antibodies from CD patients with high anti-TG2 IgA JNK-IN-8 purchase levels reduced TG2 binding to heparin/HS as compared with those with low anti-TG2 IgA or controls. There was a negative correlation between anti-TG2 IgA levels and TG2 binding to heparin/HS. Treatment of fibronectin-TG2 coated wells with CD patients’ sera or purified anti-TG2 antibodies reduced attachment of Caco-2 cells onto the plate as compared with the control samples. The effect of CD patients’ antibodies on Caco-2 cell attachment to fibronectin-TG2 matrix occurred independently of the inhibition of cell adhesion by Arg-Gly-Asp sequence containing peptides.