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https://www.readbyqxmd.com/read/29793099/carbon-monoxide-analysis-method-in-human-blood-by-airtight-gas-syringe-gas-chromatography-mass-spectrometry-ags-gc-ms-relevance-for-postmortem-poisoning-diagnosis
#1
S Oliverio, V Varlet
Carbon monoxide is one of the most abundant toxic air pollutants. Symptoms of a CO intoxication are non-specific, leading to a high number of misdiagnosed CO poisoning cases that are missing in the disease statistics. The chemical nature of the molecule makes it difficult to detect for long periods and at low levels, thus requiring a very accurate and sensitive method. Current methods capable of accurate and sensitive analyses are available, however an inconsistency between results and symptoms are frequently reported...
May 18, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29792895/pharmacogenomics-of-drug-induced-liver-injury-dili-molecular-biology-to-clinical-applications
#2
REVIEW
Kalaiyarasi Kaliyaperumal, Jane I Grove, Robin M Delahay, William J H Griffiths, Adam Duckworth, Guruprasad P Aithal
A number of drug-specific and host-related factors contribute to the development of drug-induced liver injury (DILI). Investigations focused on genetic susceptibility to DILI have advanced our understanding of the pathogenesis of this rare, yet potentially life-threatening adverse reaction. Candidate gene studies involving well-characterized patients with DILI and drug-exposed controls have identified single nucleotide polymorphisms (SNPs) affecting the metabolism and clearance of specific drugs and hence, influencing individual's susceptibility to DILI...
May 21, 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29791457/a-feasibility-study-of-colorectal-cancer-diagnosis-via-circulating-tumor-dna-derived-cnv-detection
#3
Bhuvan Molparia, Glenn Oliveira, Jennifer L Wagner, Emily G Spencer, Ali Torkamani
Circulating tumor DNA (ctDNA) has shown great promise as a biomarker for early detection of cancer. However, due to the low abundance of ctDNA, especially at early stages, it is hard to detect at high accuracies while keeping sequencing costs low. Here we present a pilot stage study to detect large scale somatic copy numbers variations (CNVs), which contribute more molecules to ctDNA signal compared to point mutations, via cell free DNA sequencing. We show that it is possible to detect somatic CNVs in early stage colorectal cancer (CRC) patients and subsequently discriminate them from normal patients...
2018: PloS One
https://www.readbyqxmd.com/read/29790374/hybrid-liposomes-showing-enhanced-accumulation-in-tumors-as-theranostic-agents-in-the-orthotopic-graft-model-mouse-of-colorectal-cancer
#4
Masaki Okumura, Hideaki Ichihara, Yoko Matsumoto
Hybrid liposomes (HLs) can be prepared by simply sonicating a mixture of vesicular and micellar molecules in a buffer solution. This study aimed to elucidate the therapeutic effects and ability of HLs to detect (diagnosis) cancer in an orthotopic graft mouse model of colorectal cancer with HCT116 cells for the use of HLs as theranostic agents. In the absence of a chemotherapeutic drug, HLs exhibited therapeutic effects by inhibiting the growth of HCT116 colorectal cancer cells in vitro, possibly through an increase in apoptosis...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/29789419/detection-of-bladder-cancer-via-microfluidic-immunoassay-and-single-cell-dna-copy-number-alteration-analysis-of-captured-urinary-exfoliated-tumor-cells
#5
Anqi Chen, Guanghou Fu, Zhijie Xu, Yukun Sun, Xiaoyi Chen, Kok Suen Cheng, Kuang Hong Neoh, Zhewen Tang, Shifu Chen, Ming Liu, Tanxiao Huang, Yun Dai, Qibo Wang, Jing Jin, Baiye Jin, Ray P S Han
The increasing incidence of bladder cancer (BC) and its high rate of recurrence over a 5-year period necessitate the need for diagnosis and surveillance amelioration. Cystoscopy and urinary cytology are the current tools, and molecular techniques such as BTA stat, NMP22, survivin mRNA, and urovysion FISH have attracted attention, however, they suf-fer from insufficient sensitivity or specificity. We developed a novel microfluidic approach for harvesting intact urinary-exfoliated tumor cells (UETCs), either individually or in clus-ters, in a clean and segregated environment, which is crucial to minimize cross-contamination and misreads...
May 22, 2018: Cancer Research
https://www.readbyqxmd.com/read/29788141/a-single-nucleotide-polymorphism-in-the-vitamin-d-receptor-gene-is-associated-with-decreased-levels-of-the-protein-and-a-penetrating-pattern-in-crohn-s-disease
#6
Laura Gisbert-Ferrándiz, Pedro Salvador, Dolores Ortiz-Masiá, Dulce Carolina Macías-Ceja, Samuel Orden, Juan Vicente Esplugues, Sara Calatayud, Joaquín Hinojosa, Maria Dolores Barrachina, Carlos Hernández
Background: Vitamin D signaling modulates inflammation through the vitamin D receptor (VDR). The synonymous single nucleotide polymorphism (SNP) rs731236, located in the VDR gene, has been associated with a higher risk of Crohn's disease (CD). We analyzed differences in VDR expression levels among CD patients who were homozygous for allelic variants in this SNP and their relevance for disease course. Methods: DNA was extracted from blood samples of CD patients, and SNP genotyping was performed by polymerase chain reaction-restriction fragment length polymorphism...
May 18, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29785613/neuroinfections-caused-by-fungi
#7
REVIEW
Katarzyna Góralska, Joanna Blaszkowska, Magdalena Dzikowiec
BACKGROUND: Fungal infections of the central nervous system (FIs-CNS) have become significantly more common over the past 2 decades. Invasion of the CNS largely depends on the immune status of the host and the virulence of the fungal strain. Infections with fungi cause a significant morbidity in immunocompromised hosts, and the involvement of the CNS may lead to fatal consequences. METHODS: One hundred and thirty-five articles on fungal neuroinfection in PubMed, Google Scholar, and Cochrane databases were selected for review using the following search words: "fungi and CNS mycoses", CNS fungal infections", "fungal brain infections", " fungal cerebritis", fungal meningitis", "diagnostics of fungal infections", and "treatment of CNS fungal infections"...
May 21, 2018: Infection
https://www.readbyqxmd.com/read/29785401/rheumatoid-arthritis-and-mirnas-a-critical-review-through-a-functional-view
#8
REVIEW
Maria Cristina Moran-Moguel, Stefania Petarra-Del Rio, Evangelina E Mayorquin-Galvan, Maria G Zavala-Cerna
Rheumatoid arthritis (RA) is a systemic autoimmune disease with severe joint inflammation and destruction associated with an inflammatory environment. The etiology behind RA remains to be elucidated; most updated concepts include the participation of environmental, proteomic, epigenetic, and genetic factors. Epigenetic is considered the missing link to explain genetic diversification among RA patients. Within epigenetic factors participating in RA, miRNAs are defined as small noncoding molecules with a length of approximately 22 nucleotides, capable of gene expression modulation, either negatively through inhibition of translation and degradation of the mRNA or positively through increasing the translation rate...
2018: Journal of Immunology Research
https://www.readbyqxmd.com/read/29784986/a-workflow-for-the-integrative-transcriptomic-description-of-molecular-pathology-and-the-suggestion-of-normalizing-compounds-exemplified-by-parkinson-s-disease
#9
Mohamed Hamed, Yvonne Gladbach, Steffen Möller, Sarah Fischer, Mathias Ernst, Stephan Struckmann, Alexander Storch, Georg Fuellen
The volume of molecular observations on human diseases in public databases is continuously increasing at accelerating rates. A bottleneck is their computational integration into a coherent description, from which researchers may derive new well-founded hypotheses. Also, the need to integrate data from different technologies (genetics, coding and regulatory RNA, proteomics) emerged in order to identify biomarkers for early diagnosis and prognosis of complex diseases and therefore facilitating the development of novel treatment approaches...
May 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29784973/significance-of-prohibitin-domain-family-in-tumorigenesis-and-its-implication-in-cancer-diagnosis-and-treatment
#10
Jie Yang, Bin Li, Qing-Yu He
Prohibitin (PHB) was originally isolated and characterized as an anti-proliferative gene in rat liver. The evolutionarily conserved PHB gene encodes two human protein isoforms with molecular weights of ~33 kDa, PHB1 and PHB2. PHB1 and PHB2 belong to the prohibitin domain family, and both are widely distributed in different cellular compartments such as the mitochondria, nucleus, and cell membrane. Most studies have confirmed differential expression of PHB1 and PHB2 in cancers compared to corresponding normal tissues...
May 21, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29784944/value-of-urinary-kim-1-and-ngal-combined-with-serum-cys-c-for-predicting-acute-kidney-injury-secondary-to-decompensated-cirrhosis
#11
Lei Lei, Liang Ping Li, Zhen Zeng, Jing Xi Mu, Xue Yang, Chao Zhou, Zhi Lan Wang, Hu Zhang
Urinary kidney injury molecule-1 (KIM-1), neutrophil gelatinase-associated lipocalin (NGAL), and serum cystatin C (Cys C) are biomarkers of acute kidney injury (AKI). However, the efficacy of combining these indices to diagnose decompensated cirrhosis is unknown. This study involved 150 patients divided into AKI and non-AKI, and healthy individuals. Urinary KIM-1 and NGAL, serum Cys and creatine, and glomerular filtration rate (GFR) were compared based on Child-Pugh liver function class. Urinary KIM-1 and NGAL concentrations and serum Cys C levels were significantly higher in patients with AKI secondary to decompensated cirrhosis than in those with AKI not secondary to decompensated cirrhosis (p < 0...
May 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29772078/evaluating-blood-clot-progression-using-magnetic-particle-spectroscopy
#12
Hafsa Khurshid, Yipeng Shi, Brent L Berwin, John B Weaver
PURPOSE: To evaluate the thrombus maturity non-invasively providing the promise of much earlier and more accurate diagnosis of diseases ranging from stroke to myocardial infarction to deep vein thrombosis. METHODS: Magnetic spectroscopy of nanoparticle Brownian rotation (MSB), a form of magnetic particle spectroscopy sensitive to Brownian rotation of magnetic nanoparticles, was used for the detection and characterization of blood clots. The nanoparticles' relaxation time was quantified by scaling the MSB spectra in frequency to match the spectra from nanoparticles in a reference state...
May 17, 2018: Medical Physics
https://www.readbyqxmd.com/read/29771460/targeting-prostate-cancer-prostate-specific-membrane-antigen-based-diagnosis-and-therapy
#13
REVIEW
Till Wüstemann, Uwe Haberkorn, John Babich, Walter Mier
The high incidence rates of prostate cancer (PCa) raise demand for improved therapeutic strategies. Prostate tumors specifically express the prostate-specific membrane antigen (PSMA), a membrane-bound protease. As PSMA is highly overexpressed on malignant prostate tumor cells and as its expression rate correlates with the aggressiveness of the disease, this tumor-associated biomarker provides the possibility to develop new strategies for diagnostics and therapy of PCa. Major advances have been made in PSMA targeting, ranging from immunotherapeutic approaches to therapeutic small molecules...
May 17, 2018: Medicinal Research Reviews
https://www.readbyqxmd.com/read/29769092/mineralization-of-alpha-1-antitrypsin-inclusion-bodies-in-mmalton-alpha-1-antitrypsin-deficiency
#14
Francesco Callea, Isabella Giovannoni, Paola Francalanci, Renata Boldrini, Gavino Faa, Daniela Medicina, Valerio Nobili, Valeer J Desmet, Kamal Ishak, Kuniaki Seyama, Emanuele Bellacchio
BACKGROUND: Alpha-1-antitrypsin (AAT) deficiency (AATD) of Z, Mmalton, Siiyama type is associated with liver storage of the mutant proteins and liver disease. The Z variant can be diagnosed on isoelectric focusing (IEF) while Mmalton and Siiyama may be missed or misdiagnosed with this technique. Therefore, molecular analysis is mandatory for their characterization. In particular, that holds true for the Mmalton variant as on IEF profile it resembles the wild M2 subtype. METHODS: This is a retrospective analysis involving review of medical records and of liver biopsy specimens from a series of Mmalton, Z and Siiyama Alpha-1-antitrypsin deficiency patients...
May 16, 2018: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/29766570/melatonin-improves-endothelial-function-in-vitro-and-prolongs-pregnancy-in-women-with-early-onset-preeclampsia
#15
Sebastian R Hobson, Seshi Gurusinghe, Rebecca Lim, Nicole O Alers, Suzanne L Miller, John C Kingdom, Euan M Wallace
Preeclampsia remains a leading cause of maternal and perinatal morbidity and mortality. There have been no material advances in the treatment of preeclampsia for nearly 50 years. Combining in vitro studies and a clinical trial, we aimed to determine if melatonin could be a useful adjuvant therapy. In a xanthine/xanthine oxidase (X/XO) placental explant model, melatonin reduced oxidative stress (8-isoprostane) and enhanced antioxidant markers (Nrf2 translocation, HO-1), but did not affect explant production of anti-angiogenic factors (sFlt, sEng, activin A)...
May 16, 2018: Journal of Pineal Research
https://www.readbyqxmd.com/read/29764582/-research-advances-in-the-role-of-aptamers-in-the-diagnosis-and-targeted-therapy-of-pediatric-cancer
#16
Yi-Bin Zhang, Yan-Peng Wang, Jing Liu
Aptamers are single-stranded DNA or RNA which are isolated from synthesized random oligonucleotide library in vitro via systematic evolution of ligands by exponential enrichment (SELEX) and can bind to metal ions, small molecules, carbohydrates, lipids, proteins, and others targets with high affinity and specificity. Aptamers have the advantages of simple preparation, good thermal stability, and low immunogenicity and have great potential in the medical fields such as molecular imaging, biosensing, early diagnosis of diseases, and targeted therapy...
May 2018: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29762048/theranostics-of-prostate-cancer-from-molecular-imaging-to-precision-molecular-radiotherapy-targeting-the-prostate-specific-membrane-antigen
#17
Harshad R Kulkarni, Aviral Singh, Thomas Langbein, Christiane Schuchardt, Dirk Mueller, Jingjing Zhang, Coline Lehmann, Richard P Baum
Alterations at the molecular level are a hallmark of cancer. Prostate cancer is associated with the overexpression of prostate specific membrane antigen (PSMA) in a majority of cases, predominantly in advanced tumors, increasing with the grade or Gleason's score. PSMA can be selectively targeted using radiolabelled PSMA ligands. These small molecules binding the PSMA can be radiolabelled with gamma-emitters like 99m Tc and 111 In or positron emitters like 68 Ga and 18 F for diagnosis as well as with their theranostic pairs such as 177 Lu (beta-emitter) or 225 Ac (alpha-emitter) for therapy...
May 15, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29762012/bio-inspired-cocatalysts-decorated-wo3-nanotube-toward-unparalleled-hydrogen-sulfide-chemiresistor
#18
Dong-Ha Kim, Ji-Soo Jang, Won-Tae Koo, Seon-Jin Choi, Hee-Jin Cho, Min-Hyeok Kim, Sang-Joon Kim, Il-Doo Kim
Herein, we incorporated dual bio-templates, i.e., cellulose nanocrystals (CNC) and apoferritin into electrospinning solution to achieve three distinct benefits, i.e., (i) facile synthesis of WO3 nanotube by utilizing self-agglomerating nature of CNC in the core of as-spun nanofibers, (ii) effective sensitization by partial phase transition from WO3 to Na2W4O13 induced by interaction between sodium doped CNC and WO3 during calcination, and (iii) uniform functionalization with monodispersive apoferritin-derived Pt catalytic nanoparticles (2...
May 15, 2018: ACS Sensors
https://www.readbyqxmd.com/read/29761119/antibodies-against-cell-adhesion-molecules-and-neural-structures-in-paraneoplastic-neuropathies
#19
Ana M Siles, Eugenia Martínez-Hernández, Josefa Araque, Jordi Diaz-Manera, Ricard Rojas-Garcia, Eduard Gallardo, Isabel Illa, Francesc Graus, Luis Querol
Objective: Paraneoplastic neurological syndromes (PNS) are rare neurological disorders in which ectopic expression of neural antigens by a tumor results in an autoimmune attack against the nervous system. Onconeural antibodies not only guide PNS diagnosis but may also help detecting underlying malignancies. Our project aims to uncover new potential antibodies in paraneoplastic neuropathies (PN). Methods: Thirty-four patients fulfilling diagnostic criteria of possible ( n = 9; 26...
May 2018: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/29761011/associations-between-apparent-diffusion-coefficient-and-electromyography-parameters-in-myositis-a-preliminary-study
#20
Hans-Jonas Meyer, Alexander Emmer, Malte Kornhuber, Alexey Surov
Objective: MRI is widely used in several muscle disorders. Diffusion-weighted imaging (DWI) is an emergent imaging modality sensitive to microstructural alterations in tissue. The apparent diffusion coefficient (ADC) is used to quantify the random motion of water molecules. Electromyography (EMG) is a clinically used diagnostic tool in myositis. The aim of this study was to elucidate possible associations between ADC values and EMG findings in myositis patients. Method: Seven patients (eight investigated muscles) with myositis (mean age 51...
May 2018: Brain and Behavior
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