ABSTRACT
Background: Various populations of regulatory T cells play a central role in the development of peripheral tolerance to allergens. Culturing of CD4+ T cells isolated from peripheral blood of allergic patients with vitamin D induces the generation of stable IL-10 producing CD4+CD25+ Treg cells suppressing the proliferation of T helper cells obtained from the same patients. The immune regulatory role of vitamin D in allergic patients has been controversial and obviously needs a more clarifying research work
Aim of the work: to determine the percentage of induced T regulatory cells producing interleukin 10 after stimulation of T regulatory cells with cow milk allergen in the presence of vitamin D in culture. This aims to further in-vitro study the immune regulatory role of vitamin D in cow milk allergic patients
Results: there is association between decreased level of vitamin D and milk-allergy, as serum level of 25[OH] D3 was insufficient in 16 [80 %] patients [10- 29.9 ng/ml] while 4 [20%] patients were sufficient [30-100 ng/ml]. Addition of vitamin D, in culture, induces the production of CD4+ CD25hi Foxp3+ IL10+. Treg cells within peripheral blood mononuclear cells [PMNCs] isolated from allergic children who had insufficient vitamin D, but not in allergic children who had normal level of vitamin D
Conclusion: this work provides further evidence for an important role of 1,25[OH]2D3 as an immune-modulatory molecule and suggests that supplementation of vitamin-D-deficient individuals, who are reported to have reduced numbers of circulating and Foxp3+ IL10+ Treg cells, may represent an attractive therapy for enhancing endogenous populations of Treg cells in allergy
ABSTRACT
Background: Elderly patients are a significant and increasing proportion of ICU patients. With advancing age, the comorbidities critically ill elderly patients have substantial mortality. The early recognition of patients at high risk of mortality is needed to plan care in advance and to control healthcare costs
Aim: To find out the relation between chronic diseases and outcome in critically ill elderly admitted to ICU
Study design: A prospective study
Participants: seventy elderly patients aged 60 years and above
Method: This study was performed in Geriatric ICU in Ain Shams University Hospitals including 70 critically ill elderly patients admitted for 24 hours or more. Each patient was subjected to on admission clinical assessment including detailed history taking, in addition to laboratory investigations
Results: The results of our study showed that ischemic heart disease was the only chronic diseases that had significant statistical effect on mortality in critically ill elderly admitted to ICU with p. value= 0.002
Conclusion: In the current study we found that mortality was associated with history of ischemic heart disease