eISSN: 1644-4124
ISSN: 1426-3912
Central European Journal of Immunology
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1/2016
vol. 41
 
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abstract:
Clinical immunology

Pollution of mycological surfaces in hospital emergency departments correlates positively with blood NKT CD3+ 16+ 56+ and negatively with CD4+ cell levels of their staff

Milena Suska
,
Sławomir Lewicki
,
Anna Kiepura
,
Izabela Winnicka
,
Paweł Leszczyński
,
Agata Bielawska-Drózd
,
Piotr Cieślik
,
Leszek Kubiak
,
Daria Depczyńska
,
Aleksandra Brewczyńska
,
Ewa Skopińska-Różewska
,
Janusz Kocik

(Cent Eur J Immunol 2016; 41 (1): 71-77)
Online publish date: 2016/03/24
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The aim of the present study was the assessment of the putative influence of yeast and filamentous fungi in healthcare and control (office) workplaces (10 of each kind) on immune system competence measured by NK (natural killer), CD4+, and NKT (natural killer T lymphocyte) cell levels in the blood of the personnel employed at these workplaces.

Imprints from floors and walls were collected in winter. The blood was taken in spring the following year, from 40 men, 26 to 53 years old, healthcare workers of hospital emergency departments (HED), who had been working for at least five years in their current positions, and from 36 corresponding controls, working in control offices. Evaluation of blood leukocyte subpopulations was done by flow cytometry. The qualitative analysis of the surface samples revealed a prevalence of strains belonging to Aspergillus spp. and Penicillium spp. genus. There was no statistically significant difference between the level of NKT; however, the percentage of NK cells was lower in the blood of HED workers than in the blood of offices personnel. Spearman analysis revealed the existence of positive correlation (r = 0.4677, p = 0.002) between the total CFU/25 cm2 obtained by imprinting method from walls and floors of HED and the percentage of NKT (CD3+16+56+) lymphocytes collected from the blood of their personnel, and negative correlation (r = –0. 3688, p = 0.019) between this parameter of fungal pollution and the percentage of CD4+ lymphocytes in the blood of HED staff. No other correlations were found.

keywords:

fungi, emergency departments, healthcare workers, offices staff, NKT blood lymphocytes, NK cells, CD4 lymphocytes

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