Evaluation of monocyte subsets and markers of activation in leprosy reactions

Understanding host immune pathways associated with tissue damage during reactions are of upmost importance to the development of immune intervention strategies. The participation of monocytes in leprosy reactions was evaluated by determining the frequency of monocyte subsets and the degree of cellular activation through the expression of MHCII and the co-stimulatory molecules CD40, CD80, CD86. Leprosy subjects with or without reactions were included in this cross-sectional study. Peripheral blood mononuclear cell were isolated and stained ex vivo to determine monocyte subsets and the degree of cellular activation by flow cytometry. Intermediate monocytes were increased in leprosy patients with reactions when compared to patients without reactions. Although no difference was detected in the frequency of monocyte subsets between type 1 and 2 reactions, the expression of CD80 was increased in monocytes from patients with type 1 reactions and CD40 was higher in paucibacillary subjects presenting type 1 reactions. Moreover, CD86 and MHC II expression were higher in intermediate monocytes when compared to the other subsets in leprosy reaction types 1 and 2. Intermediate monocyte activation with CD86 and MHCII expression is involved with both type 1 and 2 reactions, whereas CD80 and CD40 expression is related to type 1 reactions.     

Landscape Evolution of a Fluvial Sediment-Rich Avicennia marina Mangrove Forest: Insights from Seasonal and Inter-annual Surface-Elevation Dynamics

Ecosystems - Mangrove forests are vulnerable to accelerated sea-level rise associated with climate warming because they occupy a relatively narrow zone on the mid-to-upper-intertidal flats. The...     

Study of the Role of the Main Factors of Population Dynamics in the Mechanism of Differentiation and Formation of Diversity and Genetic Load of Hereditary Diseases in Subpopulations of the Karachay-Cherkess Republic

Russian Journal of Genetics - The generalized results of the genetic and epidemiological study of the genetic structure of various ethnic groups of the Karachay-Cherkess Republic (KChR) through...     

Role of Chitosan in the Regulation of the Growth,Antioxidant System and Photosynthetic Characteristics of Maize Seedlings under Cadmium Stress

Russian Journal of Plant Physiology - Cadmium (Cd) pollution was becoming more and more serious; there is an urgent need for an effective solution to inhibit the harm of cadmium stress. Chitosan...     

Establishing a Cultivable Cell Line of the Tick Dermacentor marginatus

Russian Journal of Genetics - Owing to the changes in the general ecological situation in Russia, livestock losses from ovine anaplasmosis have rapidly increased in recent years. The development of...     

Synthesis of Random DNA Libraries for In Vitro Selection and Analysis of Their Nucleotide Composition

Russian Journal of Bioorganic Chemistry - Aptamers are DNA or RNA molecules that specifically bind certain targets with high affinity due to the formation of unique spatial structures. Aptamers...     

Mass Spectrometric Amino Acid Sequencing of Short and Mid-Sized Peptides in a ESI-o-TOF System as an Alternative to MS/MS. II: Selective Fragmentation of Dansylated Peptides with Predominant Formation of b-Ions

Russian Journal of Bioorganic Chemistry - A scheme for analyzing the mass spectra of fragmented peptides, including chemical modification of the N-terminal amino group of the peptide by...     

High-Speed Recording of Vacuum Arc Discharge Images in the Optical Range

Plasma Physics Reports - Switching of a short vacuum gap with an auxiliary discharge over the surface of a dielectric has been studied via high-speed recording of images of discharge plasma...