Correlation between Na/K ratio and electron densities in blood samples of breast cancer patients

BioMetals ◽  
2018 ◽  
Vol 31 (4) ◽  
pp. 673-678 ◽  
Author(s):  
Ömer Topdağı ◽  
Ozan Toker ◽  
Sezgin Bakırdere ◽  
Ertuğrul Osman Bursalıoğlu ◽  
Ersoy Öz ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Patients ◽  
Breast Cancer Patients ◽  
Electron Densities ◽  
Blood Samples

Serial monitoring for circulating cancer cells in blood samples of stage 1–4 breast cancer patients

2006 ◽  
Vol 24 (18_suppl) ◽  
pp. 623-623
Author(s):  
K. H. Tkaczuk ◽  
N. S. Tait ◽  
K. Chua ◽  
F. Feldman ◽  
S. A. Lesko ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Cancer Patients ◽  
Primary Tumor ◽  
Receptor Expression ◽  
Breast Cancer Patients ◽  
Blood Samples ◽  
Circulating Cancer Cells ◽  
Her 2 ◽  
Stage 1

623 Serial monitoring for presence, number & characterization of circulating cancer cells (CCC) may provide valuable information that may be relevant to prognosis and treatment outcomes of breast cancer patients (BCP). We conducted a serial blood sampling study at the University of Maryland in BCP with stage 1–4 breast carcinoma. 15–20 ml of venous blood were collected before the start of systemic therapy and periodically thereafter & processed using negative selection method with double-gradient centrifugation & magnetic cell sorting to remove WBCs. Digital images of FITC-positive epithelial cells were acquired with a fluorescence microscope & counted. CCC from 41 patients (Pts) were also stained with Trastuzu-mAb-532 to quantify the HER-2/neu cell surface receptor expression relative to a fluorescence standard. 105 Pts were accrued & 415 blood samples tested (median number of samples/pt; 4 (1–8). During the 24 mos. monitoring period CCC were detected in 57 of 105 pts (54%). The Table below shows that presence of >10 CCC/sample is associated with decreased survival and increased probability of having metastatic disease.(Exact chi-square test for presence vs. absence of metastatses in A, B, C, D groups, P < 0.0001; Fisher’s exact test to compare individual groups: for B vs C+ D, P < 0.001; B vs C, P=0.001). HER-2/neu expression was assessed in CCC of 25 pts (minimum of 4 CCC per sample) as compared with strongly HER-2/neu positive control cell line SKBR-3. 10 Pts were positive & 15 negative for HER-2/neu over-expression in CCC. CCC data & primary tumor data concurred in 6 of 7 Her-2/neu primary tumor tissue positive Pts & in 12 of 13 Her-2/neu primary tissue negative Pts. For 5 Pts tissue data was not available. Conclusions: Increasing CCC numbers/sample appear to correlate with adverse outcome of BCP. Our CCC Test may provide valuable information about prognosis of stage 1–4 BCP. HER-2/neu expression could be quantified in individual CCC & concurred with primary tumor data in 90% of Pts. Supported by NCI Grant CA081903 [Table: see text] [Table: see text]

Molecular markers for circulating tumor cells in breast cancer.

2011 ◽  
Vol 29 (27_suppl) ◽  
pp. 223-223
Author(s):  
R. Zeillinger ◽  
E. Obermayr ◽  
A. Fink-Retter ◽  
G. Heinze ◽  
A. Reinthaller ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Patients ◽  
Tumor Cells ◽  
Circulating Tumor Cells ◽  
Gene Panel ◽  
Control Group ◽  
Gene Marker ◽  
Breast Cancer Patients ◽  
Gene Markers ◽  
Blood Samples

223 Background: Recently, we identified a six gene panel (CCNE2, DKFZp762E1312, EMP2, MAL2, PPIC, and SLC6A8) for the RT-qPCR based detection of circulating tumor cells (CTC) in breast cancer patients. The aim of the present study was to evaluate the gene panel in further blood samples. Methods: Blood samples were taken from breast cancer patients with metastatic disease (MBC, N=10) or with no evidence of disease (NED, N=30). Putative CTC were enriched by Oncoquick density gradient centrifugation. Total RNA was isolated with RNeasy Micro Kit (QIAgen). Template cDNA was generated with M-MLV Reverse Transcriptase, RNase H Minus (Promega) and random nonamers as primers. RT-qPCR was performed in duplicate reactions using TaqMan Assays (Applied Biosystems) with default thermal cycling parameters. Raw data were analyzed with the AB7900 Sequence Detection Software version 2.2.2 using automatic baseline correction and manual cycle threshold setting. Gene expression was normalized to GAPDH expression. A threshold value TX for each gene X was set at two standard deviations above the mean dCtX value in the healthy control group. A patient was defined as CTC-positive, if at least one gene marker was over-expressed compared to the defined threshold. Results: The gene panel consisting of CCNE2, DKFZp762E1312, EMP2, MAL2, PPIC, and SLC6A8 identified 4/11 MBC but only 5/27 NED patients as CTC positive (p=0.163). By adding known CTC markers (SCGB2A2, TFF1, FXYD3, AGR2, S100A18, and EPCAM) to the panel, 7/11 MBC but only 6/27 NED patients were CTC positive (p=0.018). The presence of CTC in NED patients correlated with pN staging (p=0.026). Only one out of the six CTC positive NED patients relapsed within the observation period (median 35 months, range 25-39 months from blood sampling). We observed no correlation of CTC positivity and recurrence in NED patients. Conclusions: The sensitivity of the RT-qPCR based CTC detection in breast cancer patients may be enhanced by adding known CTC markers (SCGB2A2, TFF1, FXYD3, AGR2, S100A18, and EPCAM) to the six gene panel (CCNE2, DKFZp762E1312, EMP2, MAL2, PPIC, and SLC6A8). Longer follow-up times are needed to evaluate the predictive value of the gene markers on survival.

Effects of G-CSF on circulating tumor cells (CTC) and CA 27.29 in breast cancer patients

2009 ◽  
Vol 27 (15_suppl) ◽  
pp. 11027-11027
Author(s):  
P. Hepp ◽  
B. Rack ◽  
A. Schneider ◽  
M. Rezai ◽  
H. Tesch ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Patients ◽  
Tumor Markers ◽  
Phase Iii ◽  
Breast Cancer Patients ◽  
Phase Iii Trial ◽  
Blood Samples ◽  
Significant Difference ◽  
Before And After ◽  
Immunomagnetic Enrichment

11027 Background: Some recent publications indicated that the use of G-CSF could be connected to an increase in CTC as well as elevated levels of tumor markers such as CA 27.29. In the SUCCESS Trial CTC and CA27.29 are examined before and after adjuvant chemotherapy (CHT) in 3754 breast cancer patients (pts). Methods: The SUCCESS Trial is a phase III trial comparing FEC-Docetaxel vs. FEC-Doc-Gemcitabine regime and 2 vs. 5 years of treatment with zoledronate in patients with primary breast cancer (BC) (N+ or high risk). Blood samples are taken before and after CHT. CTC were assessed with the CellSearchSystem (Veridex, Warren, USA). After immunomagnetic enrichment with an anti-Epcam-antibody, cells were labeled with anti-cytokeratin (8,18,19) and anti-CD45 antibodies to distinguish epithelial cells and leukocytes. CA27.29 has been measured with ST AIA-PACK Ca27.29 reagent using MUC-1 for AIA-600II (Tosoh Bioscience, Tessenderlo, Belgium). The cutoff for CA27.29 is 32 U/ml and >1 cell for the CTC analysis. Patients were grouped to CTC/CA27.29 raise or no raise and 1 to 6 cycles with G-CSF or no G-CSF at all. Results: Data on 1510 pts are available for CTC analysis. 745 pts (49%) received at least one course of G-CSF. 117 pts (8%) showed an increase in CTC after CHT. In this group 52 (3%) pts received G-CSF and 65 (4%) did not. 693 pts with stable or decreased CTC received G-CSF (46%) and 700 did not (46%). There was no significant difference (p=0.29). The analysis of CA27.29 is based on the data of 2556 pts. 1252 pts (49%) received at least one course of G-CSF. 338 pts (13%) exceeded the threshold for CA27.29 only after CHT. In this group 209 pts (8%) received G-CSF and 129 (5%) did not. 1043 pts with stable or decreased CA27.29 received G-CSF (41%) and 1175 did not (46%). This difference was highly significant (p<0.0001). Conclusions: No evidence can be provided for a significant correlation between an increase in the number of CTC and the application of G-CSF over CHT. Nevertheless the results on CA27.29 showed a highly significant correlation between the administration of G-CSF and elevated CA27.29 levels directly after CHT. This could be a possible explanation for the often observed increase of tumor markers after CHT. [Table: see text]

The novel cytotoxicity of neutrophils in the peripheral blood of breast cancer patients versus women without breast cancer.

2011 ◽  
Vol 29 (27_suppl) ◽  
pp. 44-44
Author(s):  
Z. Granot ◽  
E. A. Comen ◽  
L. Norton ◽  
R. Benezra
Keyword(s):  
Breast Cancer ◽  
Cancer Patients ◽  
Peripheral Blood ◽  
Primary Breast Tumor ◽  
Newly Diagnosed ◽  
Breast Cancer Patients ◽  
Blood Samples ◽  
Cell Kill ◽  
A Cell

44 Background: Using murine mammary tumor models, recent research conducted by our laboratory at the Sloan-Kettering Institute indicates that select neutrophils are mobilized and entrained by a primary breast tumor and uniquely have the capacity to inhibit metastatic seeding in the lung (Granot Z et al. unpublished). We sought to determine whether entrainment of cytotoxic neutrophils also occurs in blood samples from women with newly diagnosed breast cancer as contrasted to those garnered from healthy women. Methods: Subjects were 21 newly diagnosed pre-operative breast cancer patients without evidence of metastatic disease, 9 healthy female volunteers with no history of any cancer, and 3 patients with newly diagnosed DCIS. Neutrophils were purified from the blood samples. Cytotoxicity was evaluated by incubating isolated neutrophils with luciferase labeled MDA-MB-231 cells. Luciferase activity, as a reflection of % cell kill, was measured using a Bio-Tek microplate luminescence reader. Results: Significant cytotoxicity was notably observed when MDA-MB-231 cells were co-cultured with neutrophils purified from patients with invasive tumors. Pre-operative breast cancer patients (n=21) had a cell kill range of 0-30% (mean = 12.1%), whereas healthy subjects (n=9) had a cell kill range of 0.2-8% (mean = 2.6%), p<0.004. DCIS patients (N=3) had a cell kill range of 3-4% (mean = 2.7). Conclusions: To date, this preliminary work is the first to demonstrate the cytotoxic role of select neutrophils in the peripheral blood of breast cancer patients as contrasted with those from women without breast cancer. Further studies are needed to evaluate the prognostic and therapeutic role of cytotoxic neutrophils.

scholarly journals E-cadherin Gene Promoter Hyper-methylation in Blood Samples from Breast Cancer Cases

2021 ◽  
Author(s):  
Sadia Ajaz ◽  
Sani-e-Zehra Zaidi ◽  
Saleema Mehboob Ali ◽  
Aisha Siddiqa ◽  
Mohammad Ali Memon
Keyword(s):  
Breast Cancer ◽  
Cancer Patients ◽  
Peripheral Blood ◽  
Tertiary Care ◽  
Gene Promoter ◽  
Promoter Hypermethylation ◽  
Care Hospital ◽  
Breast Cancer Patients ◽  
Blood Samples ◽  
E Cadherin

In carcinomas, dissemination of cancer cells via blood or lymph circulation constitutes an early event. E-cadherin is a transmembrane calcium dependent adhesion protein. Cellular de-differentiation and plasticity, underlying metastasis, is attributed to the loss of function of E-cadherin (cdh1) gene. The loss of gene expression may arise from promoter hypermethylation, which has been reported in multiple cancers. In the present pilot project, sixty (60) blood samples were collected from the breast cancer patients at a tertiary care hospital in Karachi, Pakistan. DNA was isolated from the cells circulating in the peripheral blood of the participants. Promoter hypermethylation was investigated through sodium-bisulfite treatment of DNA followed by methylation-specific PCR. In 53.3% of the patients, E-cadherin gene promoter hypermethylation was observed. Promoter hypermethylation of E-cadherin has been reported in DNA isolated from the tissue specimen. However, to the best of our knowledge this is the first report of E-cadherin promoter hypermethylation in cells isolated from the peripheral blood of breast cancer patients from a geographically specific population. The results have important implications in tumour staging and selection of treatment regimens.

scholarly journals Determination of Se, Cr, Mn, Zn, Co, Na, and K in Blood Samples of Breast Cancer Patients to Investigate Their Variation Using ICP-MS and ICP-OES

2019 ◽  
Vol 40 (1) ◽  
pp. 11-16 ◽  
Author(s):  
Ozan Toker ◽  
Ömer Topdagi ◽  
Sezgin Bakirdere ◽  
Ertugrul Osman Bursalioglu ◽  
Ersoy Öz ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Patients ◽  
Breast Cancer Patients ◽  
Icp Oes ◽  
Blood Samples ◽  
Icp Ms

scholarly journals Real-Time qPCR-Based Detection of Circulating Tumor Cells from Blood Samples of Adjuvant Breast Cancer Patients: A Preliminary Study

Breast Care ◽  
2016 ◽  
Vol 11 (3) ◽  
pp. 194-198 ◽  
Author(s):  
Ulrich Andergassen ◽  
Michael Zebisch ◽  
Alexandra C. Kölbl ◽  
Alexander König ◽  
Sabine Heublein ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Gene Expression ◽  
Real Time ◽  
Cancer Patients ◽  
Tumor Cells ◽  
Blood Cells ◽  
Breast Cancer Patients ◽  
Blood Samples ◽  
Adjuvant Breast Cancer ◽  
Gene Expression Levels

Background: Circulating tumor cells (CTCs) are cells that detach from a primary tumor, circulate through the blood stream and lymphatic vessels, and are considered to be the main reason for remote metastasis. Due to their origin, tumor cells have different gene expression levels than the surrounding blood cells. Therefore, they might be detectable in blood samples from breast cancer patients by real-time quantitative polymerase chain reaction (RT-qPCR). Materials and Methods: Blood samples of healthy donors and adjuvant breast cancer patients were withdrawn and the cell fraction containing white blood cells and tumor cells was enriched by density gradient centrifugation. RNA was isolated and reverse transcribed to cDNA, which was then used in TaqMan real-time PCR against cytokeratin (CK)8, CK18 and CK19. 18S and GAPDH were used as controls. Results: All 3 CKs were, on average, found to be significantly higher expressed in adjuvant breast cancer samples compared to negative controls, probably due to the presence of CTCs. Unfortunately, gene expression levels could not be correlated to tumor characteristics. Conclusions: RT-qPCR could make up a new approach for the detection of CTCs from blood samples of breast cancer patients, but a correlation of the PCR data to gold standard methods in CTC detection would help to further improve the informative value of the qPCR results.

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