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https://www.readbyqxmd.com/read/29334683/epigenetic-silencing-of-the-mlh1-promoter-in-relation-to-the-development-of-gastric-cancer-and-its-use-as-a-biomarker-for-patients-with-microsatellite-instability-a-systematic-analysis
#1
Guimei Hu, Lijun Qin, Xinjun Zhang, Guoliang Ye, Tao Huang
BACKGROUND/AIMS: Human mutL homolog 1 (MLH1) promoter methylation was reported in gastric cancer (GC). This study determined the clinicopathological, prognostic, and diagnostic effects of MLH1 promoter methylation in GC. METHODS: The combined odds ratio (OR) or hazard ratio (HR) and their corresponding 95% confidence intervals (95% CI) were calculated. The pooled sensitivity, specificity, and area under the curve (AUC) were analyzed. RESULTS: A total of 4654 GC patients and 3669 non-malignant controls were identified in this systematic analysis...
January 15, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29334302/mirnas-as-potential-regulators-of-mtor-pathway-in-renal-cell-carcinoma
#2
Inês Nogueira, Francisca Dias, Ana Luísa Teixeira, Rui Medeiros
Renal cell carcinoma (RCC) is the most commonly occurring solid cancer of the adult kidney with the majority of RCC cases being detected accidentally. The most aggressive subtype is clear cell RCC (ccRCC). miRNAs, a family of small noncoding RNAs regulating gene expression have been identified as key biological modulators. The von Hippel-Lindau pathway is one of the signaling pathways involved in the pathophysiology of ccRCC. Another oncogenic mechanism involves the activation of PI3K/AKT/mTOR signaling and serves as a central regulator of cell metabolism, proliferation and survival...
January 15, 2018: Pharmacogenomics
https://www.readbyqxmd.com/read/29334244/evolving-concepts-and-use-of-immunohistochemical-biomarkers-in-flat-non-neoplastic-urothelial-lesions-who-2016-classification-update-with-diagnostic-algorithm
#3
Francesca Sanguedolce, Matteo Brunelli, Alessandro D'Amuri, Beppe Calò, Vito Mancini, Giuseppe Carrieri, Luigi Cormio
CONTEXT: The classification of flat non-neoplastic urothelial lesions has been evolved through the years in the attempt to better define a spectrum of morphologic entities with somewhat overlapping features. Differentiating these lesions is important because of differences in patient management and clinical outcome. Materials and methods and objective: A systematic review of the literature has been carried out in order to (1) assess the most striking clinical features of each lesion, and (2) identify those morphological traits and immunophenotypical markers which may aid in the differential diagnosis...
January 15, 2018: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
https://www.readbyqxmd.com/read/29333940/expression-analysis-of-liver-specific-circulating-micrornas-in-hcv-induced-hepatocellular-carcinoma-in-egyptian-patients
#4
Lobna Mourad, Eman El-Ahwany, Mona Zoheiry, Hoda Abu-Taleb, Marwa Hassan, Amged Ouf, Ali Abdel Rahim, Moataz Hassan, Suher Zada
OBJECTIVES: Due to the absence of reliable and accurate biomarkers for the early detection of liver malignancy, circulating microRNAs have recently emerged as great candidates for prompt cancer identification. Therefore, the aim of this study was to investigate the potential of liver-specific circulating microRNAs as an accurate non-invasive diagnostic tool for early diagnosis of hepatitis C virus (HCV)-induced hepatocellular carcinoma (HCC). METHODOLOGY: A total of 165 patients were enrolled in this study and categorized into four main groups: 42 chronic hepatitis C (CHC) without cirrhosis, 45 CHC with cirrhosis (LC), 38 HCC with HCV patients, and 40 healthy controls...
January 15, 2018: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29333924/dynamic-mr-imaging-for-functional-vascularization-depends-on-tissue-factor-signaling-in-glioblastoma
#5
Xiao Chen, Tian Xie, Jingqin Fang, Wei Xue, Houyi Kang, Haipeng Tong, Yu Guo, Bo Zhang, Sumei Wang, Yizeng Yang, Weiguo Zhang
Glomeruloid vascular proliferation (GVP) is a diagnostic hallmark and links to aggressive behavior, therapy resistance and poor prognosis in glioblastoma (GBM). It lacks clinical approaches to predict and monitor its formation and dynamic change. Yet the mechanism of GVPs also remains largely unknown. Using an in situ GBM xenograft mouse model, combined clinical MRI images of pre-surgery tumor and pathological investigation, we demonstrated that the inhibition of tissue factor (TF) decreased GVPs in Mouse GBM xenograft model...
January 15, 2018: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29333615/circular-rna-hsa_circ_0000567-can-be-used-as-a-promising-diagnostic-biomarker-for-human-colorectal-cancer
#6
Jianjun Wang, Xiaomin Li, Linming Lu, Lei He, Haoran Hu, Zengxiang Xu
BACKGROUND: Recent studies have revealed that circular RNAs are involved in the biological process of some kinds of human cancers. However, little is known about their diagnostic values and functions in colorectal cancer (CRC). METHODS: The expression levels of hsa_circ_0000567 in 102 paired CRC tissues and adjacent noncancerous tissues, 5 CRC cell lines, and a normal colorectal epithelial cell line were detected by quantitative real-time polymerase chain reaction (qRT-PCR)...
January 15, 2018: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/29333465/in-vivo-exposure-effects-of-99mtc-methoxyisobutylisonitrile-on-the-fdxr-and-xpa-genes-expression-in-human-peripheral-blood-lymphocytes
#7
Mohammad Taghi Bahreyni-Toossi, Habibeh Vosoughi, Hosein Azimian, Abdul Rahim Rezaei, Mehdi Momennezhad
Objectives: In recent years, the application of radiopharmaceuticals in nuclear medicine has increased substantially. Following the diagnostic procedures performed in nuclear medicine departments, such as myocardial perfusion imaging, patients generally receive considerable doses of radiation. Normally, radiation-induced DNA damages are expected following exposure to a low-dose ionizing radiation. In order to detect molecular changes, high-sensitivity techniques must be utilized. The aim of this study was to assess the effect of a low-dose (below 10 mSv) gamma ray on gene expression using quantitative real-time polymerase chain reaction (qRT-PCR)...
2018: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/29332644/role-of-serum-adenosine-deaminase-in-pulmonary-tuberculosis
#8
Varinder Saini, Bhaskar Lokhande, Shivani Jaswal, Deepak Aggarwal, Kranti Garg, Jasbinder Kaur
BACKGROUND: Definitive laboratory diagnosis and confirmation of tuberculosis remains a major challenge because of lack of specificity and sensitivity of diagnostic methods especially in sputum smear negative tuberculosis. Many studies have proved the role of ADA in diagnosis of tuberculosis in effusion fluids and a decrease in ADA activity after treatment. This study was aimed to investigate the role of serum ADA level as an early diagnostic and prognostic marker for pulmonary tuberculosis (PTB)...
January 2018: Indian Journal of Tuberculosis
https://www.readbyqxmd.com/read/29332450/identification-and-comparison-of-differentiation-related-proteins-in-hepatocellular-carcinoma-tissues-by-proteomics
#9
Sheng Zhao, Gang Su, Wenke Yang, Ping Yue, Bing Bai, Yanyan Lin, Jinduo Zhang, Yongjiang Ba, Zhiwen Luo, Xiaoming Liu, Lili Zhao, Yi Xie, Yaowei Xu, Shuo Li, Wenbo Meng, Xiaodong Xie, Xun Li
Histological differentiation is a major pathological criterion indicating the risk of tumor invasion and metastasis in patients with hepatocellular carcinoma. The degree of tumor differentiation is controlled by a complex interacting network of associated proteins. The principal aim of the present study is to identify the possible differentiation-related proteins which may be used for early diagnosis and more effective therapies. We compared poorly differentiated and well-differentiated hepatocellular carcinoma tissues by using 2-dimensional gel electrophoresis and matrix-assisted laser desorption ionization time-of-flight mass spectrometry...
December 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/29332066/correlation-between-serum-calcineurin-activity-and-left-ventricular-hypertrophy-in-hypertensive-patients-and-its-clinical-significance
#10
Jia-Li Cao, Yu-Qing Yang, Dookhun Muhammad Nabeel, Ya-Li Sun, Hua-Yi-Yang Zou, Xiang-Qing Kong, Xin-Zheng Lu
OBJECTIVE: The aim of this study is to investigate the correlation between calcineurin (CaN) and hypertension with left ventricular hypertrophy (HLVH) and to evaluate its potential clinical significance. DESIGN: The study involved 160 patients diagnosed with hypertension and 42 controls. Based on the exclusion criteria, 42 were not eligible for this study. The remaining 118 hypertensive patients were categorized into 2 subgroups based on left ventricular mass index and relative ventricular wall thickness: a normal model subgroup with hypertension (HNM) and an HLVH subgroup...
January 13, 2018: Cardiology
https://www.readbyqxmd.com/read/29331901/an-ultrasensitive-detection-of-mirna-155-in-breast-cancer-via-direct-hybridization-assay-using-two-dimensional-molybdenum-disulfide-field-effect-transistor-biosensor
#11
Samira Mansouri Majd, Abdollah Salimi, Foad Ghasemi
MicroRNAs (miRNAs), critical biomarkers of acute and chronic diseases, play key regulatory roles in many biological processes. As a result, robust assay platforms to enable an accurate and efficient detection of low-level miRNAs in complex biological samples are of great significance. In this work, a label-free and direct hybridization assay using molybdenum disulfide (MoS2) field-effect transistor (FET) biosensor has been developed for ultrasensitive detection of miRNA-155 as a breast cancer biomarker in human serum and cell-line samples...
January 6, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29331877/cerebral-changes-and-disrupted-gray-matter-cortical-networks-in-asymptomatic-older-adults-at-risk-for-alzheimer-s-disease
#12
Jose L Cantero, Mercedes Atienza, Pascual Sanchez-Juan, Eloy Rodriguez-Rodriguez, Jose Luis Vazquez-Higuera, Ana Pozueta, Andrea Gonzalez-Suarez, Eduard Vilaplana, Jordi Pegueroles, Victor Montal, Rafael Blesa, Daniel Alcolea, Alberto Lleo, Juan Fortea
The diagnostic value of cerebrospinal fluid (CSF) biomarkers is well established in Alzheimer's disease, but our current knowledge about how abnormal CSF levels affect cerebral integrity, at local and network levels, is incomplete in asymptomatic older adults. Here, we have collected CSF samples and performed structural magnetic resonance imaging scans in cognitively normal elderly as part of a cross-sectional multicenter study (SIGNAL project). To identify group differences in cortical thickness, white matter volume, and properties of structural networks, participants were split into controls (N = 20), positive amyloid-β (Aβ1-42+) (N = 19), and positive phosphorylated tau (N = 18)...
December 20, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/29331430/disposable-inkjet-printed-electrochemical-platform-for-detection-of-clinically-relevant-her-2-breast-cancer-biomarker
#13
Susanita Carvajal, Samantha N Fera, Abby L Jones, Thaisa A Baldo, Islam M Mosa, James F Rusling, Colleen E Krause
Rapidly fabricated, disposable sensor platforms hold tremendous promise for point-of-care detection. Here, we present an inexpensive (< $0.25) fully inkjet printed electrochemical sensor with integrated counter, reference, and working electrodes that is easily scalable for commercial fabrication. The electrochemical sensor platform featured an inkjet printed gold working 8-electrode array (WEA) and counter electrode (CE), along with an inkjet -printed silver electrode that was chlorinated with bleach to produce a Ag/AgCl quasi-reference electrode (RE)...
January 4, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29331214/the-stockholm-3-model-for-prostate-cancer-detection-algorithm-update-biomarker-contribution-and-reflex-test-potential
#14
Peter Ström, Tobias Nordström, Henrik Grönberg, Martin Eklund
BACKGROUND: It has been shown that the Stockholm-3 model (S3M) outperforms prostate-specific antigen (PSA) as a screening tool for prostate cancer. OBJECTIVE: To update the S3M, to give a detailed account of the value of each predictor in the S3M, and to evaluate the S3M as a reflex test for men with PSA ≥3ng/ml. DESIGN, SETTING, AND PARTICIPANTS: During 2012-2015, the Stockholm-3 study evaluated the S3M relative to PSA as tests for Gleason score ≥7 prostate cancers among men aged 50-69 yr...
January 10, 2018: European Urology
https://www.readbyqxmd.com/read/29330481/fdxr-is-a-biomarker-of-radiation-exposure-in-vivo
#15
Gráinne O'Brien, Lourdes Cruz-Garcia, Matthäus Majewski, Jakub Grepl, Michael Abend, Matthias Port, Aleš Tichý, Igor Sirak, Andrea Malkova, Ellen Donovan, Lone Gothard, Sue Boyle, Navita Somaiah, Elizabeth Ainsbury, Lucyna Ponge, Krzysztof Slosarek, Leszek Miszczyk, Piotr Widlak, Edward Green, Neel Patel, Mahesh Kudari, Fergus Gleeson, Volodymyr Vinnikov, Viktor Starenkiy, Sergii Artiukh, Leonid Vasyliev, Azfar Zaman, Christophe Badie
Previous investigations in gene expression changes in blood after radiation exposure have highlighted its potential to provide biomarkers of exposure. Here, FDXR transcriptional changes in blood were investigated in humans undergoing a range of external radiation exposure procedures covering several orders of magnitude (cardiac fluoroscopy, diagnostic computed tomography (CT)) and treatments (total body and local radiotherapy). Moreover, a method was developed to assess the dose to the blood using physical exposure parameters...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29330058/haptoglobin-and-serum-amyloid-a-as-putative-biomarker-candidates-of-naturally-occurring-bovine-respiratory-disease-in-dairy-calves
#16
Vivek Joshi, V K Gupta, A G Bhanuprakash, R S K Mandal, U Dimri, Y Ajith
Bovine respiratory disease (BRD) is one of the leading causes of morbidity and mortality in dairy calves. Identification of reliable biomarkers of naturally occurring BRD is essential for ensuring early diagnosis and treatment of calves and monitoring treatment efficacy. This need is punctuated, especially in mild to moderate cases that would greatly help to decrease recurrence and the overall prevalence of BRD. The present study was conducted to investigate the changes in serum concentrations of haptoglobin (Hpt) and serum amyloid A (SAA) and association between oxidative stress and acute phase proteins (APPs) in BRD...
January 9, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29330025/the-role-of-extracellular-and-intracellular-nicotinamide-phosphoribosyl-transferase-in-cancer-diagnostic-and-therapeutic-perspectives-and-challenges
#17
REVIEW
Maria Dalamaga, Gerasimos Socrates Christodoulatos, Christos S Mantzoros
Nicotinamide phosphoribosyl-transferase (Nampt) or pre-B cell colony-enhancing factor or visfatin represents a pleiotropic molecule acting as an enzyme, a cytokine and a growth factor. Intracellular Nampt plays an important role in cellular bioenergetics and metabolism, particularly NAD biosynthesis. NAD biosynthesis is critical in DNA repair, oncogenic signal transduction, transcription, genomic integrity and apoptosis. Although its insulin-mimetic function remains a controversial issue, extracellular Nampt presents proliferative, anti-apoptotic, pro-inflammatory, pro-angiogenic and metastatic properties...
January 9, 2018: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29329927/systems-biomarkers-in-psoriasis-integrative-evaluation-of-computational-and-experimental-data-at-transcript-and-protein-levels
#18
Tuba Sevimoglu, Beste Turanli, Ceyhun Bereketoglu, Kazim Yalcin Arga, Ayse Serap Karadag
Psoriasis is a complex autoimmune disease with multiple genes and proteins being involved in its pathogenesis. Despite the efforts performed to understand mechanisms of psoriasis pathogenesis and to identify diagnostic and prognostic targets, disease-specific and effective biomarkers were still not available. This study is compiled regarding clinical validation of computationally proposed biomarkers at gene and protein expression levels through qRT-PCR and ELISA techniques using skin biopsies and blood plasma...
January 9, 2018: Gene
https://www.readbyqxmd.com/read/29329654/uhplc-ltq-orbitrap-based-metabolomics-coupled-with-metabolomics-pathway-analysis-method-for-exploring-the-protection-mechanism-of-kudiezi-injection-in-a-rat-anti-ischemic-cerebral-reperfusion-damage-model
#19
Si-Yi Liu, Wei Cai, Fei Wang, Ying Liu, Zhan-Peng Shang, Xiu-Ping Zhang, Zi-Jian Wang, Jian-Qiu Lu, Jia-Yu Zhang
Kudiezi injection has been used extensively in the treatment of cerebrovascular and cardiovascular diseases. However, its therapeutic effects and underlying mechanism of action are not fully understood. The aim of the present study was to clarify the protective mechanisms of Kudiezi injection on cerebral ischemic injury, using metabolomics methods. Middle cerebral artery occlusion (MCAO) was introduced in rats to build the cerebral ischemic damage. UHPLC-LTQ-Orbitrap-based analytical method was established for analysis of the metabolites...
December 2017: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/29329380/circulating-micrornas-as-potential-biomarkers-of-disease-activity-and-structural-damage-in-ankylosing-spondylitis-patients
#20
Carlos Perez-Sanchez, Pilar Font-Ugalde, Patricia Ruiz-Limon, Chary Lopez-Pedrera, Maria C Castro-Villegas, Maria C Abalos-Aguilera, Nuria Barbarroja, Ivan Arias-de la Rosa, Maria D Lopez-Montilla, Alejandro Escudero-Contreras, Clementina Lopez-Medina, Eduardo Collantes-Estevez, Yolanda Jimenez-Gomez
Ankylosing spondylitis (AS) remains difficult to diagnose before irreversible damage to sacroiliac joint is noticeable. Circulating microRNAs have demonstrated to serve as diagnostic tools for several human diseases. Here, we analyzed plasma microRNAs to identify potential AS biomarkers. Higher expression levels of microRNA (miR)-146a-5p, miR-125a-5p, miR-151-3p, and miR-22-3p, and lower of miR-150-5p, and miR-451a were found in AS versus healthy donors. Interestingly, higher miR-146a-5p, miR-125a-5p, miR-151-3p, miR-22-3p, and miR-451a expression was also observed in AS than psoriatic arthritis patients...
January 10, 2018: Human Molecular Genetics
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