Background: Breast cancer is one of the most common type of cancers worldwide and remains a critical health issue. Although there are numerous treatment options for advanced metastatic breast cancer, the results are not satisfactory, particularly for triple-negative breast cancer. New treatment modalities need to be explored.
View Article and Find Full Text PDFGuang Pu Xue Yu Guang Pu Fen Xi
November 2016
As a secondary analysis method, reproducibility and reliability of near-infrared spectroscopy (NIRS) quantitative analysis are quite dependent on modelling process. In this paper, it is focused on outlier analysis for protein quantitative model of wheat based on NIRS. The purpose is to discuss the outlier effect in modelling process of complex sample set.
View Article and Find Full Text PDFGuang Pu Xue Yu Guang Pu Fen Xi
September 2015
The medium temperature black body (MTBB) is conventional high precision equipment used as spectral radiometric scale in infrared spectral region. However, in near-infrared (NIR) spectral region, there are few papers about spectral radiometric calibration by using MTBB, that is because NIR spectral region is the borderland of its effective spectral region. The main research of this paper is spectral radiometric calibration method by using MTBB in NIR spectral region.
View Article and Find Full Text PDFGuang Pu Xue Yu Guang Pu Fen Xi
November 2012
To simplify the model and improve the precision of prediction model, latent projective graph (LPG) was used for variable selection. The original spectrum was processed by continuous wavelet transform (CWT), LPG was obtained by principal component analysis (PCA), and based on the assumption that collinear wavelengths might have the same contribution to the modeling, a few latent spectral variables were selected for establishing prediction model. The root mean square error of prediction (RMSEP) model was 0.
View Article and Find Full Text PDFGuang Pu Xue Yu Guang Pu Fen Xi
March 2012
Melamine was used in foodstuff and feed industry as a feed additive occasionally. In the present work, melamine geometry structure was optimized by density functional theory (DFT) method. Raman and infrared spectra were calculated based on MP2/6-31G sets and DFT/DGTIVP sets, and then two theoretical Raman spectra were carefully compared with other experimental spectra.
View Article and Find Full Text PDFThe objective of this study was to detect interleukin-17 (IL-17), interferon-gamma (IFN-gamma), interleukin-4 (IL-4) and forkhead/winged helix transcription factor p3 (Foxp3) protein and gene expression of the optic nerve and to further explore the role of T helper cell subsets such as Th1, Th2, Th17 and Treg in the pathogenesis of optic neuritis in experimental autoimmune encephalomyelitis (EAE). Mice in C57BL/6 background were randomly divided into control and EAE groups. At days 11, 15 and 19 post-immunization, optic nerves were dissected for morphological study to detect IL-17, IFN-gamma and IL-4.
View Article and Find Full Text PDFThe remedial effects of a plant metallothionein type-2 were observed from lead (Pb) injured rats. BjMT2 from Brassica juncea was expressed in Escherichia coli and purified by affinity chromatography, a purified BjMT2 protein was obtained which strongly reacted with the thiol reagent MBB (monobromobimane). The profiles of erythrocytes, renal tubules and glomerulus of kidney of rats suffered pathological changes from excess Pb were evidently improved by supplying the BjMT2.
View Article and Find Full Text PDFBackground: Reports are increasingly appearing on the side effects caused by excessive iodine intake. Our objective was to find out whether iodine excess would impair the thyroid function and intelligence of schoolchildren in rural areas of China.
Methods: A comparative epidemiological study was made on thyroid function and intelligence of the schoolchildren in the areas of low, moderate or excessive intake of iodine.
Objective: To assess the relationship between the biological exposure to iodine and hypothyroidism.
Methods: Logistic regression model was used to analyze the risk factors of hypothyroidism, according to the epidemiologic data of 3761 adults in 3 kinds of rural communities: mild iodine deficiency area (4 natural villages in Panshan County, Liaoning Province), more than adequate iodine (7 natural villages of Zhangwu County, Liaoning Province), and excessive iodine area (2 natural villages of Huanghua City, Hebei Province).
Results: More than adequate iodine and excessive iodine were independent risk factors of subclinical hypothyroidism (OR = 3.
Objective: To investigate the relationship between selenium status and thyroid dysfunction in 3 areas with different iodine intake.
Methods: An epidemiological research was performed in the rural communities of Panshan County (iodine-deficient area) and Zhangwu County (iodine-sufficient area), Liaoning Province, and Huanghua County, Hebei Province (iodine-excessive area). Serum selenium, TSH, FT3 and FT4 levels were examined in 329 patients with thyroid dysfunction (including clinical hypothyroidism, subclinical hypothyroidism, clinical hyperthyroidism and subclinical hyperthyroidism) and 183 normal inhabitants.
Objective: To investigate the correlation between serum thyroglobulin (Tg) and thyroid stimulating hormone (TSH) in populations with non-toxic goiter.
Methods: Thyroid ultrasonography was conducted, and determination of serum triiodothyronine (FT3), thyroxin (FT4), Tg, thyroid peroxidase antibody (TPOAb), thyroglobulin antibody (TGAb) and TSH, and urine iodine were carried out among 609 persons with an average age of 35.4 in Panshan county, a mild iodine-deficient area in Liaoning province, and 1136 persons aged 39.
Objective: To investigate the effects of several factors affecting serum thyroglobulin (TG) levels among people aged 14 or more.
Methods: We selected Panshan with median urinary iodine (MUI) 83.45 micro g/L as a deficient iodine intake community, Zhangwu with MUI 242.