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Peripheral blood CD4+CRTH2+ cells in advanced stage non small cell lung cancer

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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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Platelet indices in patients with colorectal cancer

81%
Karagöz B., Sücüllü İ., Sayan Ö., Bilgi O., Tuncel T., Filiz A., Yücel E., Ozgun A., Erikçi A., Alacacioğlu A., Kandemir E.
Open Medicine
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2010
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vol. 5
|
issue 3
365-368
EN
The interaction between cancer cells and platelets has been known for a long time. Although platelet indices have been also investigated in several clinical settings, it has not been exactly demonstrated in cancer patients. We investigated platelet indices in colorectal cancer patients and compared with healthy subjects. Two hundred and twenty-one colorectal cancer patients and 110 healthy subjects were enrolled into the retrospective study. Data were obtained from computerized medical records of our hospital. Medical record review was performed for all patients regarding thrombocyte indices. Platelet count (325.000/mm3 ± 265.000/mm3 vs 267.000/mm3 ± 67.000/mm3; p=0.025; respectively) and plateletcrit (Pct) (0.25% ± 0.10 vs 0.21 ± 0.05; p<0.001; respectively) were increased in patients compared with healthy subjects while mean platelet volume (MPV) and platelet distribution width (PDW) were similar. The platelet indices were not related to existence of metastasis or acute abdomen. Platelet count and Pct, but not MPV and PDW, are elevated in colorectal cancer patients. Future studies that investigate platelet morphology, function, and putative role of platelets in tumorigenesis and metatasis should be established.
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