Imbalance of Follicular Helper and Follicular Regulatory T Cells in Chronic Rhinosinusitis with Nasal Polyps.

Objective: Data regarding the imbalance in follicular helper T (Tfh) and follicular regulatory T (Tfr) cell responses in patients having chronic rhinosinusitis with nasal polyps (CRSwNP) is so far limited. Thus, we aimed to assess the changes in circulating Tfh and Tfr in CRSwNP patients.

Methods: This case-control study included 21 patients having CRSwNP and 20 age and sex-matched healthy blood donors as a control group.

Prevalence and associated risk factors of recurrent otitis media with effusion in children in Upper Egypt.

Objective: We conducted this study to determine the associations of possible risk factors and prevalence of recurrent otitis media with effusion (OME) in a cohort of children in Upper Egypt.

Methods: This was a cross-sectional study undertaken in two tertiary referral centers in Upper Egypt. Associations of possible risk factors with prevalence of recurrent OME were studied.

Morpho-physiological and molecular characterization of drought tolerance traits in genotypes under drought stress.

Drought stress is one of the major abiotic stresses affecting lint yield and fibre quality in cotton. With increase in population, degrading natural resources and frequent drought occurrences, development of high yielding, drought tolerant cotton cultivars is critical for sustainable cotton production across countries. Six genotypes identified for drought tolerance, wider adaptability and better fibre quality traits were characterized for various morpho-physiological and biochemical characters and their molecular basis was investigated under drought stress.

Vitamin D Status in Egyptian Children With Allergic Rhinitis.

This study aimed to assess the serum levels of vitamin D in an Egyptian cohort of children with allergic rhinitis (AR) and to evaluate any correlation of vitamin D status with the disease severity. One hundred twenty children with AR and 100 healthy children were included in our study. We studied the serum levels of vitamin D 25(OH)D and 1,25(OH)2D in all participants.

Myeloid-Derived Suppressor Cells and Costimulatory Molecules in Children With Allergic Rhinitis.

Objectives:: The aim of this study is to assess the level of myeloid-derived suppressor cells (MDSCs) and the expression of costimulatory molecules CD80 and CD86 on monocytes and their ligands (CD28) on T-lymphocytes in children with allergic rhinitis (AR).

Methods:: The study included 60 children with AR and 50 controls. Flow cytometry was performed to analyze MDSCs and the expression of costimulatory molecules CD80 and CD86 on monocytes and their ligands (CD28) on T-lymphocytes.