scholarly journals A Silicon Nanowire Array Biosensor Fabricated by Complementary Metal Oxide Semiconductor Technique for Highly Sensitive and Selective Detection of Serum Carcinoembryonic Antigen

Micromachines ◽  
2019 ◽  
Vol 10 (11) ◽  
pp. 764
Author(s):  
Xun Yang ◽  
Yun Fan ◽  
Zhenhua Wu ◽  
Chaoran Liu
Keyword(s):  
Carcinoembryonic Antigen ◽  
Silicon Nanowire ◽  
Nanowire Array ◽  
Oxide Semiconductor ◽  
High Signal ◽  
Selective Detection ◽  
Sinw Array ◽  
Highly Sensitive ◽  
Serum Carcinoembryonic Antigen ◽  
Serum Cea

In this paper, we present a highly sensitive and selective detection of serum carcinoembryonic antigen (CEA) based on silicon nanowire (SiNW) array device. With the help of traditional microfabrication technology, low-cost and highly controllable SiNW array devices were fabricated. After a series of surface modification processes, SiNW array biosensors show rapid and reliable response to CEA; the detection limit of serum CEA was 10 fg/mL, the current signal is linear with the logarithm of serum CEA concentration in the range of 10 fg/mL to 100 pg/mL. In this work, SiNW array biosensors can obtain strong signal and high signal-to-noise ratio; these advantages can reduce the production cost of the SiNW-based system and promote the application of SiNWs in the field of tumor marker detection.

scholarly journals Preoperative Serum Carcinoembryonic Antigen as a Marker for Predicting the Outcome of Three Cancers

2017 ◽  
Vol 9 ◽  
pp. 1179299X1769014 ◽  
Author(s):  
Jingzhu Nan ◽  
Juan Li ◽  
Xiujuan Li ◽  
Guanghong Guo ◽  
Xinyu Wen ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Survival Rate ◽  
Carcinoembryonic Antigen ◽  
Youden Index ◽  
Rank Test ◽  
Prognostic Information ◽  
Treatment Implementation ◽  
Preoperative Serum ◽  
Serum Carcinoembryonic Antigen ◽  
Serum Cea

Background: Serum levels of carcinoembryonic antigen (CEA) are associated with a variety of tumors. Objective: This study evaluated the prognostic value of pretreatment serum CEA levels in predicting the outcomes of multiple tumors subjected to treatment. Methods: Prior to therapy, serum samples from 71 prostate, 46 breast, 77 gastric, and 31 pancreatic cancer patients were collected to examine serum CEA levels. The cutoff value for CEA was set as determined by the maximum Youden index. The data were analyzed by the Kaplan-Meier curves generated by the log-rank test and Cox multivariate analysis. Results: The overall survival rate for all the patients was 71.11%. The 3-year survival rate of patients with prostate, breast, gastric, and pancreatic cancers was 81.69%, 95.65%, 54.55%, and 51.61%, respectively. The 3-year survival rate showed significant statistical differences between patients with serum CEA levels <2.885 µg/L and those with serum CEA levels ⩾2.885 µg/L ( P < .001). The statistical differences of the 3-year survival rate also existed in the men ( P = .010) or women group ( P < .001), as well as in the 3 different types of cancer, which include breast cancer ( P = .025), gastric cancer ( P = .001), and pancreatic cancer ( P = .047). Conclusions: Serum CEA levels can provide additional prognostic information and may be useful in treatment implementation for patients with breast, gastric, or pancreatic cancer.

scholarly journals Serum carcinoembryonic antigen as a tumour marker in patients with endometrial cancer

2016 ◽  
Vol 23 (5) ◽  
pp. 439 ◽  
Author(s):  
Y. Hashiguchi ◽  
M. Kasai ◽  
T. Fukuda ◽  
T. Ichimura ◽  
T. Yasui ◽  
...  
Keyword(s):  
Endometrial Cancer ◽  
Carcinoembryonic Antigen ◽  
Menopausal Status ◽  
Elevated Serum ◽  
Case Series ◽  
Myometrial Invasion ◽  
Tumour Markers ◽  
Serum Carcinoembryonic Antigen ◽  
Serum Cea

Background No potential tumour markers have been validated for prognosis in endometrial cancer. However, carcinoembryonic antigen (cea) is one of the most widely used tumour markers in various types of cancer. Although cea expression in endometrial cancer has been investigated, its prognostic value remains controversial, and no studies have investigated serum cea levels in large case series. In the present study, we investigated diagnostic and prognostic applications of serum cea for endometrial cancer.Methods This prospective study was approved by our Institutional Review Board. Between January 2006 and December 2012, serum cea was measured prospectively in 215 patients with endometrial cancer and was subsequently measured during treatment and at scheduled follow-up examinations in patients with elevated basely ne serum cea.Results During the study period, 215 patients (142 stage i, 19 stage ii, 32 stage iii, 22 stage iv) were treated for endometrial cancer. By the time of last follow-up, 52 had relapsed (24.2%), and the median follow-up duration was 45 months (range: 1–95 months). Elevated serum cea was identified in 25 patients (11.6%) and was associated with histologic type (p = 0.04), histologic grade (p = 0.03), and myometrial invasion depth (p = 0.01). Elevated serum cea was not related to clinical stage, lymph node metastasis, distant metastasis, age, menopausal status, or body mass index. Relapse of disease was related to elevated serum cea (p = 0.006).Conclusions Serum cea is a potential prognostic indicator for endometrial cancer.

Pseudopsammomatous meningioma with elevated serum carcinoembryonic antigen: a true secretory meningioma

1991 ◽  
Vol 74 (1) ◽  
pp. 129-132 ◽  
Author(s):  
David N. Louis ◽  
Allan J. Hamilton ◽  
Raymond A. Sobel ◽  
Robert G. Ojemann
Keyword(s):  
Carcinoembryonic Antigen ◽  
Elevated Serum ◽  
Immunohistochemical Analysis ◽  
Intracranial Tumor ◽  
Vascular Pattern ◽  
Rare Occurrence ◽  
Content Type ◽  
Secretory Meningioma ◽  
Serum Carcinoembryonic Antigen ◽  
Serum Cea

✓ A sphenoid-wing meningioma in a 60-year-old woman was accompanied by elevated serum carcinoembryonic antigen (CEA) levels, which returned to normal after removal of the tumor. Light microscopic examination revealed a secretory meningioma containing numerous pseudopsammoma bodies and a prominent vascular pattern. Immunohistochemical analysis showed the tumor cells and pseudopsammoma bodies to be CEA-positive. This case illustrates the possibility that secretory meningioma may be associated with clinically detectable secretion of CEA. The report also documents the rare occurrence of elevated serum CEA in a primary benign intracranial tumor.

scholarly journals Hubungan Nilai Carcinoembryonic Antigen dengan Derajat Diferensiasi pada Karsinoma Kolorektal di RSUP Prof. Dr. R. D. Kandou Manado

2018 ◽  
Vol 10 (2) ◽  
Author(s):  
John Wesley ◽  
Toar Mambu ◽  
Heber Sapan ◽  
Winfried M. Sumanti
Keyword(s):  
Colorectal Cancer ◽  
Carcinoembryonic Antigen ◽  
Cancer Patients ◽  
Correlation Study ◽  
North Sulawesi ◽  
Preoperative Serum ◽  
Serum Carcinoembryonic Antigen ◽  
Serum Cea ◽  
Differentiation Stage ◽  
Colorectal Cancer Patients

Abstract: Colorectal cancer is a serious health problem in Indonesia as well as in North Sulawesi. Serum carcinoembryonic antigen (CEA) is a progmostic factor in patients with this disease. This study was aimed to obtain the correlation between the histopathological differentiation stage and serum CEA level in colorectal cancer patients at Prof. Dr. R. D. Kandou Hospital Manado. This was an analytical correlation study. Subjects were colorectal cancer patients who had preoperative serum CEA level and histopathological differentiation stage results. Data were analyzed with Anova test (variant analysis) and Spearman Rho test. The results showed that there were 58 colorectal cancer patients enrolled in this study. The patients’ data were obtained from the Digestive Surgery clinic and nursery room of Prof. Dr. R. D. Kandou Hospital Manado. Of the 58 patients, 37 (63.79%) had moderate differentiated colorectal cancer. Related to serum CEA level, 23 patients (39.65%) had moderate differentiated colorectal cancer with serum CEA level 20-100 ng/ml. The Spearman Rho test showed that there was a positive correlation between serum CEA level and histopathoplogical differentiation stage of cancer (r = 0.877 and P = 0.001). Conclusion: There was a significant correlation between serum CEA level and histopathological differentiation stage of colorectal cancer. The better the differentiation stage, the higher the serum CEA level.Keywords: carcinoembryonic antigen, colorectal cancer, differentiation stageAbstrak: Karsinoma kolorektal (KKR) telah menjadi masalah kesehatan yang serius di Indonesia dan Sulawesi Utara pada khususnya. Kadar carcinoembryonic antigen (CEA) merupakan salah satu faktor prognostik pada penderita KKR. Penelitian ini bertujuan untuk mengetahui hubungan antara derajat diferensiasi histopatologik dengan kadar CEA dalam serum pada pasien KKR di RSUP Prof. Dr. R. D. Kandou Manado. Jenis penelitian ini ialah analitik korelatif. Subyek penelitian ialah 58 pasien KKR yang mempunyai hasil pemeriksaan kadar CEA serum preoperasi dan pemeriksaan derajat diferensiasi histopatologik. Analisis statistik menggunakan uji Anova (analisis variansi) dan korelasi Spearman Rho. Data pasien diambil dari pasien yang datang dan kontrol di Poliklinik Bedah Digestif serta dari ruang perawatan Bedah Digestif RSUP Prof. Dr. R. D. Kandou Manado. Hasil penelitian memperlihatkan derajat diferensiasi tumor kolorektal terbanyak ialah diferensiasi sedang/moderate differentiated yaitu 37 pasien (63,79%). Bila dihubungkan dengan nilai CEA serum, yang terbanyak ditemukan ialah jenis diferensiasi sedang pada pasien dengan kadar CEA serum 20-100 ng/ml sebanyak 23 orang (39,65%). Uji Spearman Rho memperlihatkan bahwa kadar CEA berkorelasi positif dengan derajat diferensiasi KKR (r = 0,877 dan P = 0,0001). Simpulan: Terdapat korelasi bermakna antara kadar CEA serum dan derajat diferensiasi kanker kolorektal. Derajat diferensiasi KKR yang baik memiliki kadar CEA yang tinggi.Kata kunci: carcinoembryonic antigen, karsinoma kolorektal, derajat differensiasi

scholarly journals Association Between Serum Carcinoembryonic Antigen Levels at Different Perioperative Time Points and Colorectal Cancer Outcomes

2021 ◽  
Vol 11 ◽  
Author(s):  
Zhenhui Li ◽  
Dafu Zhang ◽  
Xiaolin Pang ◽  
Shan Yan ◽  
Ming Lei ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Sensitivity Analysis ◽  
Carcinoembryonic Antigen ◽  
Cox Regression ◽  
Neoadjuvant Treatment ◽  
Stage Ii ◽  
Optimal Timing ◽  
Primary Analysis ◽  
Serum Carcinoembryonic Antigen ◽  
Serum Cea

BackgroundWhether elevated postoperative serum carcinoembryonic antigen (CEA) levels are prognostic in patients with stage II colorectal cancer (CRC) remains controversial.Patients and MethodsPrimary and sensitivity analysis populations were obtained from a retrospective, multicenter longitudinal cohort including consecutive patients without neoadjuvant treatment undergoing curative resection for stage I–III CRC. Serum CEA levels before (CEApre-m1) and within 1 (CEApost-m1), 2–3 (CEApost-m2–3), and 4–6 months (CEApost-m4–6) after surgery were obtained, and their associations with recurrence-free survival (RFS) and overall survival (OS) were assessed using Cox regression. Sensitivity and subgroup analyses were performed.ResultsPrimary and sensitivity analysis populations included 710 [415 men; age, 54.8 (11.6) years] and 1556 patients [941 men; age, 56.2 (11.8) years], respectively. Recurrence hazard ratios (HRs) in the elevated CEApre-m1, CEApost-m1, CEApost-m2–3, and CEApost-m4–6 groups were 1.30 (95% CI: 0.91–1.85), 1.53 (95% CI: 0.89–2.62), 1.88 (95% CI: 1.08–3.28), and 1.15 (95% CI: 0.91–1.85), respectively. The HRs of the elevated CEApre-m1, CEApost-m1, CEApost-m2–3, and CEApost-m4–6 groups for OS were 1.09 (95% CI: 0.60–1.97), 2.78 (95% CI: 1.34–5.79), 2.81 (95% CI: 1.25–6.30), and 3.30 (95% CI: 1.67–.536), respectively. Adjusted multivariate analyses showed that both in the primary and sensitivity analysis populations, elevated CEApost-m2–3, rather than CEApre-m1, CEApost-m1, and CEApost-m4–6, was an independent risk factor for recurrence, but not for OS. The RFS in the elevated and normal CEApost-m2–3 groups differed significantly among patients with stage II disease [n = 266; HR, 2.89; 95% CI, 1.02–8.24 (primary analysis); n = 612; HR, 2.69; 95% CI, 1.34–5.38 (sensitivity analysis)].ConclusionsElevated postoperative CEA levels are prognostic in patients with stage II CRC, with 2–3 months after surgery being the optimal timing for CEA measurement.

Elevated carcinoembryonic antigen predicts rapidly progressive interstitial lung disease in clinically amyopathic dermatomyositis

Rheumatology ◽  
2021 ◽  
Author(s):  
Dingxian Zhu ◽  
Jianjun Qiao ◽  
Shunli Tang ◽  
Yunlei Pan ◽  
Sheng Li ◽  
...  
Keyword(s):  
Interstitial Lung Disease ◽  
Lung Disease ◽  
Carcinoembryonic Antigen ◽  
Elevated Serum ◽  
Multivariate Logistic Regression Analysis ◽  
Laboratory Findings ◽  
Serum Carcinoembryonic Antigen ◽  
Lower Lung ◽  
Serum Cea ◽  
Lung Zone

Abstract Objectives The present study aimed to determine the correlation between serum carcinoembryonic antigen (CEA) level and the severity of interstitial lung disease (ILD) in clinically amyopathic DM (CADM) patients. Methods We performed a retrospective study including 41 Chinese CADM patients without malignancy. Serum CEA levels, clinical and laboratory findings were collected. Association tests between CEA levels and disease activity parameters were performed. Results Among the 41 patients, 16 (39.0%) developed rapidly progressive (RP)-ILD; of them, 14 (87.5%) had elevated serum CEA levels. Multivariate logistic regression analysis indicated that an elevated serum CEA level was an independent risk factor for RP-ILD. The incidence of elevated CEA level was significantly higher in patients with RP-ILD than in those without RP-ILD (87.5 vs 16.0%, P &lt; 0.001). Furthermore, CEA levels were higher in patients with CADM with RP-ILD [26.87 (6.71) μg/l] than in those without RP-ILD [3.23 (0.64) μg/l] (P &lt; 0.001). CEA levels in CADM patients were associated with the ferritin, alanine aminotransferase, aspartate aminotransferase and lactate dehydrogenase levels, and CT scores of the lungs. Also, elevated CEA levels are related to the organizing pneumonia pattern and lower lung zone consolidation in high-resolution CT. Moreover, the cumulative survival rate was significantly lower (68.4 vs 31.6%, P &lt; 0.001) in the group with a CEA level &gt;8.75 μg/l than that in the group with a CEA level &lt;8.75 μg/l. Conclusions An elevated serum CEA level is common in patients with CADM, and a higher serum CEA level is a powerful indicator of RP-ILD and poor prognosis in those patients.

scholarly journals Design of Silicon Nanowire Array for PEDOT:PSS-Silicon Nanowire-Based Hybrid Solar Cell

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3797 ◽  
Author(s):  
Syed Abdul Moiz ◽  
A. N. M. Alahmadi ◽  
Abdulah Jeza Aljohani
Keyword(s):  
Solar Cell ◽  
High Efficiency ◽  
Short Circuit ◽  
Silicon Nanowire ◽  
Nanowire Array ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Hybrid Solar Cell ◽  
Design Issues ◽  
Sinw Array

Among various photovoltaic devices, the poly 3, 4-ethylenedioxythiophene:poly styrenesulfonate (PEDOT:PSS) and silicon nanowire (SiNW)-based hybrid solar cell is getting momentum for the next generation solar cell. Although, the power-conversion efficiency of the PEDOT:PSS–SiNW hybrid solar cell has already been reported above 13% by many researchers, it is still at a primitive stage and requires comprehensive research and developments. When SiNWs interact with conjugate polymer PEDOT:PSS, the various aspects of SiNW array are required to optimize for high efficiency hybrid solar cell. Therefore, the designing of silicon nanowire (SiNW) array is a crucial aspect for an efficient PEDOT:PSS–SiNW hybrid solar cell, where PEDOT:PSS plays a role as a conductor with an transparent optical window just-like as metal-semiconductor Schottky solar cell. This short review mainly focuses on the current research trends for the general, electrical, optical and photovoltaic design issues associated with SiNW array for PEDOT:PSS–SiNW hybrid solar cells. The foremost features including the morphology, surface traps, doping of SiNW, which limit the efficiency of the PEDOT:PSS–SiNW hybrid solar cell, will be addressed and reviewed. Finally, the SiNW design issues for boosting up the fill-factor, short-circuit current and open-circuit voltage will be highlighted and discussed.

Phase I trial of iodine 131-labeled COL-1 in patients with gastrointestinal malignancies: influence of serum carcinoembryonic antigen and tumor bulk on pharmacokinetics.

1996 ◽  
Vol 14 (6) ◽  
pp. 1798-1809 ◽  
Author(s):  
B Yu ◽  
J Carrasquillo ◽  
D Milenic ◽  
Y Chung ◽  
P Perentesis ◽  
...  
Keyword(s):  
Phase I ◽  
Carcinoembryonic Antigen ◽  
Phase I Trial ◽  
Nuclear Imaging ◽  
Hematologic Toxicity ◽  
Baseline Serum ◽  
Gastrointestinal Malignancies ◽  
Serum Carcinoembryonic Antigen ◽  
Serum Cea ◽  
Iodine 131

PURPOSE COL-1 is a high-affinity murine monoclonal antibody (MAb) specific for carcinoembryonic antigen (CEA). A phase I trial was conducted in which a uniform quantity of antibody labeled with escalating doses of iodine 131 (131I) was administered to patients with advanced gastrointestinal (GI) malignancies to evaluate tolerance and pharmacokinetics. PATIENTS AND METHODS Eighteen patients with advanced, assessable GI malignancies (16 colon, one pancreas, and one gastric) previously treated with conventional chemotherapy (but no pelvic radiation) received 20 mg of COL-1 labeled with 131I, with doses from 10 mCi/m2 to 75 mCi/m2. In this cohort, the baseline serum CEA level ranged from 6 to 2,739 ng/mL (mean +/- SD, 500 +/- 639). RESULTS Nuclear imaging detected at least one tumor site in all 18 patients; 82% of all tumor involved organs were positive and 58% of all lesions > or = 1.0 cm were detected. Immune complexes were detected in 89% of patients 5 minutes after completion of infusion, and levels correlated with CEA levels (r = .71). Elevated CEA (> 500 ng/mL) and tumor bulk (total tumor area > 150 cm2) correlated directly with clearance of serum radioactivity and inversely with serum half-life and cumulative serum radioactivity parameters. Nonhematologic toxicity was mild and non-dose-limiting. Hematologic toxicity, particularly thrombocytopenia, was both dose-related and dose-limiting. The maximal-tolerated dose is 65 mCi/m2. The correlation between dose (millicuries per square meter) and thrombocytopenia was made stronger, by accounting for either variation in pharmacokinetics, or variation in serum CEA and tumor bulk. CONCLUSION 131I-COL-1 is well tolerated, except for hematologic toxicity. These data suggest that patients with highly elevated circulating CEA levels and/or increased tumor bulk may clear 131I-labeled COL-1 more rapidly from the circulation and experience less myelosuppression.

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