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Brain asymmetry, immunity, handedness

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Stoyanov Z., Decheva L., Pashalieva I., Nikolova P.
Open Medicine
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2012
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vol. 7
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issue 1
1-8
EN
The principle of symmetry-asymmetry is widely presented in the structural and functional organization of the nonliving and living nature. One of the most complex manifestations of this principle is the left-right asymmetry of the human brain. The present review summarizes previous and contemporary literary data regarding the role of brain asymmetry in neuroimmunomodulation. Some handedness-related peculiarities are outlined additionally. Brain asymmetry is considered to be imprinted in the formation and regulation of the individual’s responses and relationships at an immunological level with the external and internal environment. The assumptions that the hemispheres modulate immune response in an asymmetric manner have been confirmed in experiments on animals. Some authors assume that the right hemisphere plays an indirect role in neuroimmunomodulation, controlling and suppressing the left hemispheric inductive signals.
2
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Peripheral blood CD4+CRTH2+ cells in advanced stage non small cell lung cancer

88%
Karagöz B., Bilgi O., Kandemir E., Erikçi A., Sayan Ö., Özgün A., Yılmaz B., Türken O., Alacacıoğlu A., Öztürk A.
Open Medicine
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2010
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vol. 5
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issue 4
431-436
EN
To investigate CD4+CRTH2+ cells in peripheral blood in advanced stage non small cell lung cancer (NSCLC) patients. Forty-six patients with advanced stage NSCLC, who are chemotherapy or radiotherapy naïve, and 17 healthy volunteers, were enrolled in this study. The study was performed using flow cytometry and a complete blood cell counter analyser. CD4+ T cell percentage, CD4/CD8 ratio, CRTH2+CD4+ cell percentages, counts, and mean fluorescein intensity (MFI) and hematological parameters were evaluated in both groups. A survival analysis was performed to compare the patients with high CD4+CRTH2+ cell percentage and those with low CD4+CRTH2+ percentage. CD4+ T cell percentage in total lymphocytes and the CD4/CD8 ratio were lower in the patient group than in the control group. The absolute CD8 T cell count was higher in the patient group than in the control group, whereas the total T cells was not different. The CRTH2+ cell percentage in CD4+ T cells (7.96% ± 6.21% vs 3.37% ± 3.55%; respectively; p: 0,001) and the absolute count of CRTH2+CD4+ cells ( 97 mm-3 ± 109 mm-3 vs 37 mm-3 ± 38 mm-3, respectively; p: 0,033) in the patient group were higher than in the control group, but CRTH2-PE MFI values were not different between groups. Cox regression analysis did not show that CRTH2+CD4+ cell count or percentage is an independent prognostic factor. The study found that CRTH2 expression of CD4+ T cells and CRTH2+CD4+ cell number are higher in the peripheral blood of NSCLC patients than in that of healthy subjects. Further studies that explore the biological significance of high CD4+CRTH2+ cells in lung cancer patients, should be pursued.
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