Microorganisms produce functional amyloids that can be examined and manipulated in vivo and in vitro. Escherichia coli assemble extracellular adhesive amyloid fibers termed curli that mediate adhesion and promote biofilm formation. We have characterized the dye binding properties of the hallmark amyloid dye, Congo red, with curliated E. coli and with isolated curli fibers. Congo red binds to cu...

Congo red binding by virulent A-layer-containing (A+) and avirulent A-layer-deficient (A-) strains of Aeromonas salmonicida was examined. Congo red binding to A+ cells was enhanced by salt and thus hydrophobically driven, but at low Congo red concentrations binding was salt independent. Congo red was bound by A+ cells by a kinetically distinct mechanism (Kd, 0.25 microM) which was absent in A- ...

In this study, the photocatalytic degradation of methyl orange and Congo red dye was investigated inaqueous solution using C,N,S-tridoped SnO2 nanoparticles as a nano photocatalyst. The degradationwas carried out under different conditions including the photocatalyst amount, initial concentrationand pH of the solution. The results indicated that the degradation of methyl orange and Congo redwas...

OUCHI, E., MUTRA, K. and YAMAGATA, S. Reevaluation of Congo Red Test as Reticuloendothelial System Function Test Using Tritiated Congo Red Autoradio graphy. Tohoku J. exp. Med., 1973, 109 (3), 251-259 Tritiated Congo red was prepared by the gas exposure method. Analytical results obtained by thin layer chromatography and spectrophotometry indicated that the radioactive Congo red thus prepared h...

Background and aims: Evidence-based education, integrating professional knowledge of current best evidence in making decisions about how to deliver the training. Using traditional methods of teaching can bring learning to deviate so the use of modern methods and scientific evidence crucial role in the decision-making training. The first level is placed on prevention education and Special educat...

A new dwarf alestid from the vicinity of Inga on the lower Congo River, Bas Congo Province, Democratic Republic of Congo is described. Assignment of the new taxon to the poorly defined genus, Micralestes, is discussed and justified on the basis of available morphological character data. With the recognition of Micralestes schelly sp. nov., a total of six Micralestes are now known to inhabit the...

Programme National de Nutrition (PRONANUT), Kinshasa, Democratic Republic of Congo (DRC). Evolution, Ecology and Genetics Research School of Biology, Australian National University, Canberra, ACT 0200, Australia. Hospital General de Reference, Zone de Sante de Popokabaka, Democratic Republic of Congo (DRC). Centre Neuropsychopathologique, Universite de Kinshasa, Democratic Republic of Congo (DRC).

Congo red absorption is generally considered a contraindication of Rhizobium. However, R. leguminosarum takes up the dye on yeast extract-mannitol agar. The uptake of congo red varies among strains of R. leguminosarum, as shown elsewhere with strains of R. trifolii and R. meliloti. Congo red absorption does not distinguish rhizobia from other bacteria, but may be useful as a strain marker.

Département de Médecine Interne, Faculté de Médecine, Université de Lubumbashi, République Démocratique du Congo, Département de Santé Publique, Faculté de Médecine, Université de Lubumbashi, République Démocratique du Congo, Département de Chirurgie, Faculté de Médecine, Université de Lubumbashi, République Démocratique du Congo, Centre Médical du Centre-Ville (CMDC), Lubumbashi, République Dé...