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Page 1 from 357 results
Evaluation of the effects of cotinine and nicotine-N'-oxides on the development of tumors in rats initiated with N-[4-(5-nitro-2-furyl)-2-thiazolyl]formamide.
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The effects of cotinine and nicotine-N'-oxides on tumor development in F344 rats initiated with N-[4-(5-nitro-2-furyl)-2-thiazolyl]formamide [(FANFT) CAS: 24554-26-5] were evaluated. When rats were 6 weeks old, FANFT in an agar diet was administered for a 6-week period. Subsequently, cotinine,
Plasma cotinine levels and pancreatic cancer in the EPIC cohort study.
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Smoking is an established risk factor for pancreatic cancer, previously investigated by the means of questionnaires. Using cotinine as a biomarker for tobacco exposure allows more accurate quantitative analyses to be performed. This study on pancreatic cancer, nested within the European Prospective
The influence of cotinine on the non-small-cell lung cancer line A549.
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The aim of this investigation was to determine the influence of cotinine on the non-small-cell lung cancer line A549. The material for the study was the A549 cell line. The cells were subjected to 24-h incubation with cotinine at doses of 18 and 36 ng/ml. Control cells were incubated under analogous
Urinary cotinine and lung cancer risk in a female cohort.
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In a cohort of women aged 40-64 at entry, 12 h urine samples were obtained at the beginning of a follow-up period of up to 15 years in which incident cases of lung cancer were registered as well as deaths from lung cancer. In this cohort a nested case-control study (n = 397) was carried out by
Correlation between Cigarette Smoking and Urine Cotinine Level in Gastric Cancer Patients.
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Various substances in cigarette smoke including nicotine have been shown to promote/induce cancer cell proliferation. Since cotinine has a longer half life and stability in the blood, it has become the preferred biomarker for cigarette smoking exposure. Seventy-three gastric cancer patients were
Association Between Cotinine-verified Smoking Status and Risk of Colorectal Neoplasia.
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OBJECTIVE
We evaluated the association of urinary cotinine-verified smoking status with the risk of colorectal neoplasia (CRN).
BACKGROUND
Many studies have reported the association between the risk of CRN and smoking status, based on self-reported questionnaires. Although self-reported smoking
Gelsolin is a potential cellular target for cotinine to regulate the migration and apoptosis of A549 and T24 cancer cells.
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In the present work, we have investigated the effect of cotinine, the major metabolite of nicotine on the A549 and T24 cell lines in the context of structural and quantitative changes of F-actin, gelsolin and vimentin. The chosen cell lines constitute the established experimental models for lung and
Positive plasma cotinine during platinum-based chemotherapy is associated with poor response rate in advanced non-small cell lung cancer patients.
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Effect of Cotinine-verified Change in Smoking Status on Risk of Metachronous Colorectal Neoplasia After Polypectomy.
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Beta-cryptoxanthin and lung cancer in Shanghai, China--an examination of potential confounding with cigarette smoking using urinary cotinine as a biomarker for true tobacco exposure.
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Diet may be a modifier of smoking-related cancer risk, with protective effects of intake of fruits and vegetables and associated antioxidants found in many observational studies. We previously reported serum beta-cryptoxanthin levels being inversely associated with smoking-related lung cancer
Genetic polymorphisms in 15q25 and 19q13 loci, cotinine levels, and risk of lung cancer in EPIC.
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BACKGROUND
Multiple polymorphisms affecting smoking behavior have been identified through genome-wide association studies. Circulating levels of the nicotine metabolite cotinine is a marker of recent smoking exposure. Hence, genetic variants influencing smoking behavior are expected to be associated
Urinary cotinine is as good a biomarker as serum cotinine for cigarette smoking exposure and lung cancer risk prediction.
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Smoking and cervical intraepithelial neoplasia: nicotine and cotinine in serum and cervical mucus in smokers and nonsmokers.
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A blood sample before treatment was taken from 35 women with cervical intraepithelial neoplasia. Levels of nicotine and cotinine were analyzed by radioimmunoassay. Both cotinine and, especially, nicotine were shown to be strongly concentrated in cervical mucus compared with serum levels. These
Rapid HPLC method for the determination of vitamin A and E and cotinine concentration in human serum in women with CIN and cervical cancer.
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OBJECTIVE
The aim of this study was to elaborate on the analytical method for quantitative determination of retinol and alpha-tocopherol in serum of women diagnosed with CIN and cervical cancer. The basic problem in the analysis of the vitamins content in biological material is their low
An anti-EGFR × cotinine bispecific antibody complexed with cotinine-conjugated duocarmycin inhibits growth of EGFR-positive cancer cells with KRAS mutations.
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Antibody-drug conjugates (ADCs) can selectively deliver cytotoxic agents to tumor cells and are frequently more potent than naked antibodies. However, optimization of the conjugation process between antibodies and cytotoxic agents and characterization of ADCs are laborious and time-consuming
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