Medicine and Health Sciences Commons^™

Bioactive Food Components And Their Inhibitory Actions In Multiple Platelet Pathways, Diptimayee Das, Shubhamay Adhikary, Ranjit Kumar Das, Antara Banerjee, Arun Kumar Radhakrishnan, Sujay Paul, Surajit Pathak, Asim K. Duttaroy

Health & Biomedical Sciences Faculty Publications and Presentations

In addition to hemostasis and thrombosis, blood platelets are involved in various processes such as inflammation, infection, immunobiology, cancer metastasis, wound repair and angiogenesis. Platelets' hemostatic and non-hemostatic functions are mediated by the expression of various membrane receptors and the release of proteins, ions and other mediators. Therefore, specific activities of platelets responsible for the non-hemostatic disease are to be inhibited while leaving the platelet's hemostatic function unaffected. Platelets' anti-aggregatory property has been used as a primary criterion for antiplatelet drugs/bioactives; however, their non-hemostatic activities are not well known. This review describes the hemostatic and non-hemostatic function of human blood …

Analysis Of Ptprk Polymorphisms In Association With Risk And Age At Onset Of Alzheimer’S Disease, Cancer Risk, And Cholesterol, Yang Chen, Chun Xu, Sam Harirforoosh, Xingguang Luo, Ke-Sheng Wang

Health & Biomedical Sciences Faculty Publications and Presentations

The human receptor-type protein-tyrosine phosphatase kappa (PTPRK) gene is highly expressed in human brain and is previously associated with neuropsychiatric disorders and cancer. This study investigated the association of 52 single nucleotide polymorphisms (SNPs) in the PTPRK with the risk and age at onset (AAO) of Alzheimer’s disease (AD) in 791 AD patients and 782 controls. Five SNPs (top SNP rs4895829 with p=0.0125) were associated with the risk of AD based on a multiple logistic regression (p<0.05); while 6 SNPs (top SNP rs1891150 with p=8.02×10−6) were associated with AAO by using a multiple linear regression analysis. Interestingly, rs2326681 was associated with both the risk and AAO of AD (p=4.65×10−2 and 5.18×10−3, respectively). In a replication study, the results from family-based association test - generalized estimating equation (GEE) statistics and Wilcoxon test showed that seven SNPs were associated with the risk of AD (top SNP rs11756545 with p=1.02×10−2) and 12 SNPs were associated with the AAO (top SNP rs11966128 with p=1.39×10−4), respectively. One additional sample showed that four SNPs were associated with risk of cancer (top SNP rs1339197 with p=4.1×10−3), 12 SNPs associated with LDL-cholesterol (top SNP rs4544930 with p=3.47×10−3), and 8 SNPs associated with total cholesterol (top SNP rs1012049 with p=6.09×10−3). In addition, the AD associated rs4895829 was associated with the gene expression level in the cerebellum (p=7.3×10−5). The present study is the first study providing evidence of several genetic variants within the PTPRK gene associated with the risk and AAO of AD, risk of cancer, LDL and total cholesterol levels.

Applications Of Next-Generation Sequencing In Cancer Research And Molecular Diagnosis, Kesheng Wang, Chun Xu

Health & Biomedical Sciences Faculty Publications and Presentations

Next-generation sequencing (NGS) technologies including DNA sequencing and RNA sequencing provide “omics” approaches to reveal genomic, transcriptomic, and epigenomic landscapes of individual cancers. A variety of genomic aberrations can be screened simultaneously, such as common and rare variants, structural variations (e.g. insertions and deletions), copy-number variation, and fusion transcripts. NGS technologies together with bioinformatics analysis, which expand our knowledge, are increasingly used to simultaneously analyze multiple genes in a cost and time-effective manner and have been applied in analyzing clinical cancer samples and offering NGS-based molecular diagnosis. Therefore, NGS is increasingly valuable as a tool for diagnosis for a number …

Urban-Rural Differences In The Associations Of Risk Factors With Epilepsy Based On The California Health Interview Survey: A Multiple Logistic Regression Analysis, Kesheng Wang, Chun Xiang Mao, Xuefeng Liu, Alok Dwivedi, Javier Ordonez, Lewis R. Rubin, Chun Xu

Health & Biomedical Sciences Faculty Publications and Presentations

Background: Previous studies provided inconsistent associations of smoking, stroke, and serious psychological distress (SPD) with epilepsy while urban-rural differences in the associations of risk factors with epilepsy are not well documented.

Objectives: This study aimed to evaluate the associations of lifestyle, health conditions, and SPD with epilepsy and to examine whether the associations differ between urban and rural areas.

Patients and Methods: A total of 604 adults with epilepsy and 42416 controls were selected from the 2005 California Health Interview Survey. Weighted univariate and multiple logistic regression analyses were used to estimate the associations of potential factors (behavioral factors, SPD, …

Statistical Modeling Of Microrna Expression With Human Cancers, Ke-Sheng Wang, Yue Pan, Chun Xu

Health & Biomedical Sciences Faculty Publications and Presentations

MicroRNAs (miRNAs) are small non-coding RNAs (containing about 22 nucleotides) that regulate gene expression. MiRNAs are involved in many different biological processes such as cell proliferation, differentiation, apoptosis, fat metabolism, and human cancer genes; while miRNAs may function as candidates for diagnostic and prognostic biomarkers and predictors of drug response. This paper emphasizes the statistical methods in the analysis of the associations of miRNA gene expression with human cancers and related clinical phenotypes: 1) simple statistical methods include chi-square test, correlation analysis, t-test and one-way ANOVA; 2) regression models include linear and logistic regression; 3) survival analysis approaches such as …

Bayesian Survival Analysis Of Genetic Variants In Ptprn2 Gene For Age At Onset Of Cancer, Ke-Sheng Wang, Yue Pan, Weize Wang, Chun Xu

Health & Biomedical Sciences Faculty Publications and Presentations

Background: The protein tyrosine phosphatase, receptor type, N polypeptide 2 (PTPRN2) gene may play a role in cancer; however, no study has focused on the associations of genetic variants within the PTPRN2 gene with age at onset (AAO) of cancer.

Methods: This study examined 220 single nucleotide polymorphisms (SNPs) within the PTPRN2 gene in the Marshfield sample with 716 cancer cases (any diagnosed cancer, excluding minor skin cancer) and 2,848 non-cancer controls. Multiple logistic regression model and linear regression model in PLINK software were used to examine the association of each SNP with the risk of cancer and AAO, respectively. …