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https://www.readbyqxmd.com/read/29223100/activation-of-anti-oxidant-nrf2-signaling-by-enone-analogues-of-curcumin
#1
Lorraine M Deck, Lucy A Hunsaker, Thomas A Vander Jagt, Lisa J Whalen, Robert E Royer, David L Vander Jagt
Inflammation and oxidative stress are common in many chronic diseases. Targeting signaling pathways that contribute to these conditions may have therapeutic potential. The transcription factor Nrf2 is a major regulator of phase II detoxification and anti-oxidant genes as well as anti-inflammatory and neuroprotective genes. Nrf2 is widespread in the CNS and is recognized as an important regulator of brain inflammation. The natural product curcumin exhibits numerous biological activities including ability to induce the expression of Nrf2-dependent phase II and anti-oxidant enzymes...
November 21, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29223072/alteration-of-autophagy-related-proteins-in-peripheral-blood-mononuclear-cells-of-patients-with-parkinson-s-disease
#2
Yasuo Miki, Shuji Shimoyama, Tomoya Kon, Tatsuya Ueno, Ryo Hayakari, Kunikazu Tanji, Tomoh Matsumiya, Eiki Tsushima, Fumiaki Mori, Koichi Wakabayashi, Masahiko Tomiyama
Previous postmortem studies demonstrated dysregulation of autophagy in patients with Parkinson's disease (PD). To clarify whether this alteration reflects a fundamental aspect of PD or represents the final stage of autophagy dysregulation resulting from a long neurodegenerative process, we focused on basal autophagy in peripheral blood mononuclear cells (PBMCs) of PD patients (n = 35) and controls (n = 23). The whole-transcriptome assay revealed downregulation of mRNAs for 6 core regulators of autophagy (UNC-51-like kinase [ULK] 3, autophagy-related [Atg] 2A, Atg4B, Atg5, Atg16L1, and histone deacetylase 6)...
November 21, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/29223050/a-simple-rapid-and-stability-indicating-validated-method-for-quantification-of-lamotrigine-in-human-plasma-and-dry-plasma-spot-using-lc-esi-ms-ms-application-in-clinical-study
#3
Kuldeep Kumar Namdev, Jaya Dwivedi, Deepak Chandra Chilkoti, Swapnil Sharma
Lamotrigine (LTZ) is a phenyltriazine derivative which belongs to anti-epileptic drugs (AEDs) class and prescribed as mono- or adjunctive-therapy in treatment of epilepsy. Therapeutic drug monitoring (TDM) of AEDs provides a valid clinical tool in optimization of overall therapy. However, TDM is challenging due to the high biological samples (plasma/blood) storage/shipment costs and the limited availability of laboratories providing TDM services. Sampling in the form of dry plasma spot (DPS) or dry blood spot (DBS) are suitable alternative to overcome these issues...
December 1, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29222697/clinical-implications-of-rapid-eplex%C3%A2-respiratory-pathogen-panel-testing-compared-to-laboratory-developed-real-time-pcr
#4
Anneloes L van Rijn, Roel H T Nijhuis, Vincent Bekker, Geert H Groeneveld, Els Wessels, Mariet C W Feltkamp, Eric C J Claas
Rapid diagnosis of respiratory infections is of great importance for adequate isolation and treatment. Due to the batch-wise testing, laboratory-developed real-time polymerase chain reaction (PCR) assays (LDT) often result in a time to result of one day. Here, LDT was compared with rapid ePlex® Respiratory Pathogen (RP) Panel testing of GenMark Diagnostics (Carlsbad, CA, USA) with regard to time to result, installed isolation precautions, and antibacterial/antiviral treatment. Between January and March 2017, 68 specimens of 64 patients suspected of an acute respiratory infection were tested with LDT and the ePlex® RP panel...
December 8, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29222406/dna-methylation-mediated-silencing-of-regenerating-protein-1-alpha-reg1a-affects-gastric-cancer-prognosis
#5
Yan-Song Qiu, Guang-Jun Liao, Ning-Ning Jiang
BACKGROUND Gastric cancer (GC) is one of the most common cause of cancer-related deaths. The clinical trials still lack the effective methods to treat or monitor the disease progression. In this research, the biological function and the underlying molecular mechanism of regenerating protein 1 alpha (REG1A) in GC were investigated. MATERIAL AND METHODS Gene expression omnibus (GEO), KMplot datasets and GC tissue microarray (n=164) were used to analyze the expression of REG1A and related patient prognoses in GC...
December 9, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29221961/prevalence-of-high-on-treatment-aspirin-and-clopidogrel-platelet-reactivity-in-patients-with-critical-limb-ischemia
#6
Leonardo C Clavijo, Noor Al-Asady, Ashwat Dhillon, Ray V Matthews, Jorge Caro, Han Tun, Vincent Rowe, David M Shavelle
OBJECTIVES: The goal of this study is to establish the prevalence of high on-treatment platelet reactivity to aspirin (HPRA) and clopidogrel (HPRC) in patients with critical limb ischemia (CLI). BACKGROUND: CLI is associated with an increased risk of death and cardiovascular events. Unlike other patient populations with atherosclerotic cardiovascular disease, previous studies failed to demonstrate a benefit of antiplatelet therapy in patients with CLI. METHODS: From June 2014 to November 2016, we performed platelet reactivity studies for P2Y12 and thromboxane A2 (TXA2) inhibition in 100 CLI patients receiving daily treatment with aspirin and clopidogrel...
October 28, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29221728/emulsified-isoflurane-induces-release-of-cytochrome-c-in-human-neuroblastoma-shsy-5y-cells-via-jnk-c-jun-n-terminal-kinases-signaling-pathway
#7
Zeyong Yang, Jingjing Lv, Xianfu Lu, Xingxing Li, Xiaohu An, Jianwei Wang, Hao Weng, Yuanhai Li
A large number of studies have demonstrated that inhalation anesthetic isoflurane induced neural cell death by apoptosis in various cell and animal models. Emulsified isoflurane (EIso) is a new type of intravenous preparation of isoflurane that attracts increasing research attention as a promising clinical agent due to its both advantages as an intravenous and inhalation anesthetics medication. However, its safety and underlying molecular mechanism of neurotoxicity largely remain unknown. Therefore, it is meaningful to investigate the safety of EIso and to further elucidate its mechanism of anesthetic neurotoxicity...
December 5, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29221667/interleukin-27-and-interleukin-37-are-elevated-in-sickle-cell-anemia-patients-and-inhibit-in-vitro-secretion-of-interleukin-8-in-neutrophils-and-monocytes
#8
A E Alagbe, A S Justo Junior, L P Ruas, W V Tonassé, R M Santana, T H C Batista, I F Domingos, A S Araujo, M A C Bezerra, M N N Santos, M H S L Blotta
BACKGROUND AND OBJECTIVE: Inflammation is implicated in the pathogenesis of most complications seen in sickle cell anemia (SCA) patients. We aimed to evaluate serum levels of two newly discovered anti-inflammatory cytokines (IL-27 and IL-37), and pro-inflammatory cytokines among Brazilian SCA patients that are not on hydroxyurea therapy (HbSS), compared with hydroxyurea-treated patients (HbSSHU) and healthy controls (HbAA). Furthermore, we demonstrated the effect of IL-27, IL-37, and heme on in vitro secretions of IL-8 in human neutrophils and monocytes...
December 5, 2017: Cytokine
https://www.readbyqxmd.com/read/29221422/total-flavones-of-abelmoschus-manihot-improve-diabetic-nephropathy-by-inhibiting-the-irhom2-tace-signalling-pathway-activity-in-rats
#9
Su Liu, Lifang Ye, Jing Tao, Chao Ge, Liji Huang, Jiangyi Yu
CONTEXT: Total flavones extracted from Abelmoschus manihot L. (Malvaceae) medic (TFA) have been proven clinically effective at improving renal inflammation and glomerular injury in chronic kidney disease (CKD). OBJECTIVE: This study evaluated the function of TFA as an inhibitor of iRhom2/TACE (tumour necrosis factor-α converting enzyme) signalling and investigated its anti-DN (diabetic nephropathy) effects in a DN rat model. MATERIALS AND METHODS: In vitro, cells were treated with 200 μg/mL advanced glycation end products (AGEs), and then co-cultured with 20 μg/mL TFA for 24 h...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/29221207/chst6-mutation-screening-and-endoplasmatic-reticulum-stress-in-macular-corneal-dystrophy
#10
Liyuan Wang, Xianling Tang, Xiaolin Lv, Encheng Sun, Donglai Wu, Changlin Wang, Ping Liu
Macular corneal dystrophy (MCD) is an autosomal recessive disorder mainly caused by gene mutations of carbohydrate sulfotransferase (CHST6) leading to bilateral visual impairment. Because the mechanism underlying this degeneration remains poorly understood, we investigated molecular alterations and pathways that may be involved in MCD in this issue. Different mutation sites were screened by direct sequencing of the coding region of CHST6. In addition, we described morphological changes in MCD keratocytes by light microscopy and electron microscopy and determined the relationship between the development of this disease and the occurrence of apoptosis through flow cytometry, cell counting kit-8, colony formation assay and other experiments...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29221199/long-non-coding-rna-uca1-indicates-an-unfavorable-prognosis-and-promotes-tumorigenesis-via-regulating-akt-gsk-3%C3%AE-signaling-pathway-in-cholangiocarcinoma
#11
Yi Xu, Yue Yao, Kaiming Leng, Zhenglong Li, Wei Qin, Xiangyu Zhong, Pengcheng Kang, Ming Wan, Xingming Jiang, Yunfu Cui
Long non-coding RNAs (lncRNAs) have been documented to play key roles in a wide range of pathophysiological processes, including cancer initiation and progression. Recently, the aberrant expression of urothelial carcinoma associated 1 (UCA1) was observed in many types of cancers. However, its clinical relevance and exact effects in cholangiocarcinoma (CCA) remains unknown. In the present study, we aimed to investigate the clinical significance of UCA1 and evaluate its prognostic value in patients with CCA. Besides, the functional roles of UCA1 were detected both in vitro and in vivo...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29221192/tumor-suppressive-function-of-unc5d-in-papillary-thyroid-cancer
#12
Man-Man Zhang, Feng Sun, Bing Cui, Le-Le Zhang, Ya Fang, Yan Li, Rui-Jia Zhang, Xiao-Ping Ye, Yu-Ru Ma, Bing Han, Huai-Dong Song
Background: Studies have shown an association of the UNC5D gene with kidney and bladder cancer and neuroblastoma. We investigated whether UNC5D acts as a tumor suppressor in papillary thyroid carcinoma (PTC). Methods: Primary PTC tumors and matched normal thyroid tissues were obtained from 112 patients to detect UNC5D mRNA by real-time PCR. Genomic DNA sequencing was performed to detect BRAF mutation in PTC tumors. The association between UNC5D expression and clinicopathological data from PTC patients was reviewed retrospectively...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29221124/production-of-n%C3%AE-acetyl-t%C3%AE-1-hsa-through-in-vitro-acetylation-by-rimj
#13
Jing Chen, Haibin Li, Tao Wang, Shuyang Sun, Jia Liu, Jianhua Chen
Thymosin alpha 1 (Tα1) is an important immunomodulating agent with various clinical applications. The natural form of Tα1 is Nα -acetylated, which was supposed to be related to in vivo stability of the hormone. In this study, fusion protein Tα1-HSA was constructed and expressed in Pichia pastoris. RimJ, a Nα -acetyltransferase from E.coli, was also overexpressed and purified to homogeneity. In vitro acetylation of Tα1-HSA in the presence of RimJ and acetyl coenzyme A resulted in Nα -acetyl Tα1-HSA. The Nα -acetylation was determined by LC-MS/MS...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29220884/a-black-swan-in-clinical-laboratory-practice-the-analytical-error-due-to-interferences-in-immunoassay-methods
#14
Aldo Clerico, Lucia Belloni, Cinzia Carrozza, Mario Correale, Ruggero Dittadi, Claudio Dotti, Antonio Fortunato, Giulio Vignati, Gian Carlo Zucchelli, Marco Migliardi
It is well known that the results of immunoassay methods can be affected by specific or non-specific interferences, ranging from 0.4% to 4.0%. The presence of interference may greatly compromise the accuracy of immunoassay analyses causing an error in the measurement, producing false-positive or false-negative results. From a clinical point of view, these analytical errors may have serious implications for patient care because they can cause misdiagnosis or inappropriate treatment. Unfortunately, it is a very difficult task to identify the irregular analytical errors related to immunoassay methods because they are not detectable by normal laboratory quality control procedures, are reproducible within the test system, may be clinically plausible and are relatively rare...
December 7, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29220829/decreased-expression-of-the-polarity-regulatory-par-complex-predicts-poor-prognosis-of-the-patients-with-colorectal-adenocarcinoma
#15
Min-Kyung Yeo, Jin-Man Kim, Kwang-Sun Suh, Seok-Hyung Kim, Ok-Jun Lee, Kyung-Hee Kim
Partitioning defective (Par) proteins regulate cell polarity and differentiation. Par3, Par6β, and protein kinase Cζ (PKCζ), which are PAR complex members, have been shown to be associated with oncogenesis and progression. Herein, we report the expression pattern and clinical relevance of Par3, Par6β, and PKCζ in colorectal adenocarcinoma (CRAC). A total of 393 primary CRACs, 41 primary-metastatic CRAC pairs, 41 adenomas with low-grade dysplasia, and 41 nontumor colorectal tissue samples were examined by immunohistochemistry and Western blot assays for Par3, Par6β, and PKCζ protein expressions...
December 5, 2017: Translational Oncology
https://www.readbyqxmd.com/read/29220802/conducting-polymer-based-electrochemical-biosensors-for-neurotransmitters-a-review
#16
REVIEW
Jong-Min Moon, Neeta Thapliyal, Khalil Khadim Hussain, Rajendra N Goyal, Yoon-Bo Shim
Neurotransmitters are important biochemical molecules that control behavioral and physiological functions in central and peripheral nervous system. Therefore, the analysis of neurotransmitters in biological samples has a great clinical and pharmaceutical importance. To date, various methods have been developed for their assay. Of the various methods, the electrochemical sensors demonstrated the potential of being robust, selective, sensitive, and real time measurements. Recently, conducting polymers (CPs) and their composites have been widely employed in the fabrication of various electrochemical sensors for the determination of neurotransmitters...
December 5, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29220095/digital-image-analysis-of-ki67-in-hot-spots-is-superior-to-both-manual-ki67-and-mitotic-counts-in-breast-cancer
#17
Gustav Stålhammar, Stephanie Robertson, Lena Wedlund, Michael Lippert, Mattias Rantalainen, Jonas Bergh, Johan Hartman
AIMS: During pathological examination of breast tumours, proliferative activity is routinely evaluated by a count of mitoses. Adding immunohistochemical stains of Ki67 provides extra prognostic and predictive information. However, currently used methods for these evaluations suffer from imperfect reproducibility. It is still unclear whether analysis of Ki67 should be performed in hot spots, in the tumour periphery or as an average of the whole tumour section. In this paper, we compare the clinical relevance of mitoses, Ki67 and Phosphohistone H3 in two cohorts of primary breast cancer specimens (total n=294)...
December 8, 2017: Histopathology
https://www.readbyqxmd.com/read/29218459/discordance-between-mass-spectrometry-and-immunometric-igf-1-assay-in-pituitary-disease-a-prospective-study
#18
Vivien Bonert, John Carmichael, Zengru Wu, James Mirocha, Daniel A Perez, Nigel J Clarke, Richard E Reitz, Michael J McPhaul, Adam Mamelak
PURPOSE: Measuring IGF-1, a biomarker for GH activity, is critical to evaluating disordered hypothalamic-pituitary GH axis. Inconsistent IGF-1 measurements among different immunoassays are well documented. We switched from Immulite 2000 immunoassay to narrow-mass-extraction, high-resolution liquid chromatography mass-spectrometry (LC-MS) compliant with recent consensus recommendations on assay standardization. Comparability of these two assays in patients with pituitary disease in a clinical practice setting is not known...
December 7, 2017: Pituitary
https://www.readbyqxmd.com/read/29218434/inhibition-of-gsk-3beta-signaling-pathway-rescues-ketamine-induced-neurotoxicity-in-neural-stem-cell-derived-neurons
#19
Jingjing Zhang, Changlei Cui, Yanhui Li, Haiyang Xu
Clinical application of anesthetic reagent, ketamine (Keta), may induce irreversible neurotoxicity in central nervous system. In this work, we utilized an in vitro model of neural stem cells-derived neurons (nSCNs) to evaluate the role of GSK-3 signaling pathway in Keta-induced neurotoxicity. Embryonic mouse-brain neural stem cells were differentiated into neurons in vitro. Keta (50 μM)-induced neurotoxicity in cultured nSCNs was monitored by apoptosis, immunohistochemical and western blot assays, respectively...
December 7, 2017: Neuromolecular Medicine
https://www.readbyqxmd.com/read/29218266/ensuring-sample-quality-for-blood-biomarker-studies-in-clinical-trials-a-multicenter-international-study-for-plasma-and-serum-sample-preparation
#20
Feng-Ming Spring Kong, Lujun Zhao, Luhua Wang, Yuhchyau Chen, Jie Hu, Xiaolong Fu, Chunxue Bai, Li Wang, Theodore S Lawrence, Mitchell S Anscher, Adam Dicker, Paul Okunieff
Background: Sample quality is critical for biomarker detection in oncology, and platelet degradation and contamination in plasma have a remarkable impact on the ability to accurately quantify many blood-based biomarkers. Platelet factor 4 (PF4) can be used as an indicator to monitor sample quality. This multicenter study aimed to determine the impact of critical components of the blood sample handling process on platelet degradation/contamination and to establish an optimal method for collecting platelet-poor plasma samples...
December 2017: Translational Lung Cancer Research
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