منابع مشابه
Regulation of antigen presentation by acidic pH
The effect of pH on functional association of peptide antigens with APC membranes was investigated by using aldehyde-fixed B cells and class II-restricted T cell hybridomas to assess antigen/MHC complex formation. The results indicated that the rate and extent of functional peptide binding was markedly increased at pH 5.0 as compared with pH 7.3. The pH dependence of binding was preserved after...
متن کاملWater surface is acidic.
Water autoionization reaction 2H2O --> H3O- + OH- is a textbook process of basic importance, resulting in pH = 7 for pure water. However, pH of pure water surface is shown to be significantly lower, the reduction being caused by proton stabilization at the surface. The evidence presented here includes ab initio and classical molecular dynamics simulations of water slabs with solvated H3O+ and O...
متن کاملAutoionization at the surface of neat water: is the top layer pH neutral, basic, or acidic?
Autoionization of water which gives rise to its pH is one of the key properties of aqueous systems. Surfaces of water and aqueous electrolyte solutions are traditionally viewed as devoid of inorganic ions; however, recent molecular simulations and spectroscopic experiments show the presence of certain ions including hydronium in the topmost layer. This raises the question of what is the pH (def...
متن کاملAcidic pH environment induces autophagy in osteoblasts
Osteoblasts (OBs) play an important role in bone fracture healing, yet the extreme adverse microenvironment in fracture sites has a negative impact on the survival of OBs. Therefore, it is important to study how OBs behave in the complex fracture microenvironment. Studies have shown that autophagy plays a pivotal role in maintaining cellular homeostasis and defending the cell against adverse mi...
متن کامل(de)stabilize an oil-in-water emulsion at neutral or acidic pH? A review
This paper reviews the effects of the addition of flaxseed gum on the physicochemical properties of whey protein-stabilized, oil-in-water emulsions at neutral and acidic pH as investigated by light scattering and rheology under dilute and concentrated conditions. At pH 7.0, measurements performed in the dilute system showed no changes in charge or size of the droplets however, in the concentrat...
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ژورنال
عنوان ژورنال: British Dental Journal
سال: 2003
ISSN: 0007-0610,1476-5373
DOI: 10.1038/sj.bdj.4810238