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Laboratory Medicine

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https://www.readbyqxmd.com/read/29679705/pushing-the-limits-of-molecular-crystal-structure-determination-from-powder-diffraction-data-in-high-throughput-chemical-environments
#1
Elena A Kabova, Charles D Blundell, Kenneth Shankland
Crystal structure determination from powder diffraction data (SDPD) using the DASH software package is evaluated for data recorded using transmission capillary, transmission flat plate and reflection flat plate geometries on a selection of pharmaceutical compounds. We show that transmission capillary geometry remains the best option when crystal structure determination is the primary consideration and, as expected, reflection flat plate geometry is not recommended for SDPD due to preferred orientation effects...
April 18, 2018: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29679554/reference-materials-for-molecular-diagnostics-current-achievements-and-future-strategies
#2
REVIEW
Rongrong Jing, Huimin Wang, Shaoqing Ju, Ming Cui
BACKGROUND: Molecular diagnoses have become more widespread in many areas of laboratory medicine where qualitative or quantitative approaches are used to detect nucleic acids. The increasing number of assay methods and the targets for molecular diagnostics contribute to variability in the test results among clinical laboratories. Thus, reference materials (RMs) are required to enhance the comparability of results. METHODS: This review focuses on the definition of RMs as well as the production and characteristics of higher order RMs from different organizations and their future strategies...
April 18, 2018: Clinical Biochemistry
https://www.readbyqxmd.com/read/29676115/-survival-state-and-fruiting-characteristics-of-endangered-medicinal-plant-sinopodophyllum-hexandrum-plant-in-tibet-plateau
#3
Qi-Qiang Guo, Chao Gao, Hui-E Li, Yan-Hui Ye, Yan-Ying Han
This study was carried out by the methods of typical plots investigation and laboratory test aiming at analyzing the survival state and fruiting characteristics of three Sinopodophyllum hexandrum populations in different environmental habitats. Meanwhile, it could provide scientific basis for enhancing wild population quantity recovery. The results showed that more population quantity grow in the habitats of large-area gap (Population A) and bushes (Population C) with a majority of the young individuals, while the minor-area gap (Population B) was the opposite...
March 2018: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29674995/serum-steroid-ratio-profiles-in-prostate-cancer-a-new-diagnostic-tool-toward-a-personalized-medicine-approach
#4
Adriana Albini, Antonino Bruno, Barbara Bassani, Gioacchino D'Ambrosio, Giuseppe Pelosi, Paolo Consonni, Laura Castellani, Matteo Conti, Simone Cristoni, Douglas M Noonan
Background: Serum steroids are crucial molecules altered in prostate cancer (PCa). Mass spectrometry (MS) is currently the elected technology for the analysis of steroids in diverse biological samples. Steroids have complex biological pathways and stoichiometry and it is important to evaluate their quantitative ratio. MS applications to patient hormone profiling could lead to a diagnostic approach. Methods: Here, we employed the Surface Activated Chemical Ionization-Electrospray-NIST (SANIST) developed in our laboratories, to obtain quantitative serum steroid ratio relationship profiles with a machine learning Bayesian model to discriminate patients with PCa...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29674195/thrombotic-microangiopathies-of-pregnancy-differential-diagnosis
#5
REVIEW
M Gupta, B B Feinberg, R M Burwick
Thrombotic microangiopathy (TMA) disorders are characterized by microangiopathic hemolytic anemia, thrombocytopenia and end-organ injury. In pregnancy and postpartum, TMA is most commonly encountered with HELLP (hemolysis, elevated liver enzymes, low platelet count syndrome) or preeclampsia with severe features, but rarely TMA is due to thrombotic thrombocytopenic purpura (TTP) or atypical hemolytic uremic syndrome (aHUS). Due to overlapping clinical and laboratory features, TTP and aHUS are often mistaken for preeclampsia or HELLP...
February 16, 2018: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29673616/nxy-059-a-failed-stroke-neuroprotectant-offers-no-protection-to-stem-cell-derived-human-neurons
#6
Ana Antonic, Mirella Dottori, Malcolm R Macleod, Geoffrey A Donnan, David W Howells
BACKGROUND: Developing new medicines is a complex process where understanding the reasons for both failure and success takes us forward. One gap in our understanding of most candidate stroke drugs before clinical trial is whether they have a protective effect on human tissues. NXY-059 is a spin-trap reagent hypothesized to have activity against the damaging oxidative biology which accompanies ischemic stroke. Re-examination of the preclinical in vivo dataset for this agent in the wake of the failed SAINT-II RCT highlighted the presence of a range of biases leading to overestimation of the magnitude of NXY-059's effects in laboratory animals...
April 16, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29673604/concurrence-of-big-data-analytics-and-healthcare-a-systematic-review
#7
REVIEW
Nishita Mehta, Anil Pandit
BACKGROUND: The application of Big Data analytics in healthcare has immense potential for improving the quality of care, reducing waste and error, and reducing the cost of care. PURPOSE: This systematic review of literature aims to determine the scope of Big Data analytics in healthcare including its applications and challenges in its adoption in healthcare. It also intends to identify the strategies to overcome the challenges. DATA SOURCES: A systematic search of the articles was carried out on five major scientific databases: ScienceDirect, PubMed, Emerald, IEEE Xplore and Taylor & Francis...
June 2018: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/29672926/insights-into-the-etiology-associated-gene-regulatory-networks-in-hepatocellular-carcinoma-from-the-cancer-genome-atlas
#8
Veerabrahma Pratap Seshachalam, Karthik Sekar, Kam M Hui
BACKGROUND AND AIM: Hepatitis B virus, hepatitis C virus, alcoholic consumption and non-alcoholic fatty liver are the major known risk factors for Hepatocellular carcinoma (HCC). There have been very few studies comparing the underlying biological mechanisms associated with the different etiologies of HCC. In this study, we hypothesized the existence of different regulatory networks associated with different liver disease etiologies involved in hepatocarcinogenesis. METHODS: Using upstream regulatory analysis tool in ingenuity pathway analysis software, URs were predicted using differential expressed genes for HCC to facilitate the interrogation of global gene regulation...
April 19, 2018: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29672265/report-formatting-in-laboratory-medicine-a-call-for-harmony
#9
Graham R D Jones, Michael Legg
The results of medical laboratory testing are only useful if they lead to appropriate actions by medical practitioners and/or patients. An underappreciated component of the medical testing process is the transfer of the information from the laboratory report into the reader's brain. The format of laboratory reports can be determined by the testing laboratory, which may issue a formatted report, or by electronic systems receiving information from laboratories and controlling the report format. As doctors can receive information from many laboratories, interpreting information from reports in a safe and rapid manner is facilitated by having similar report layouts and formats...
April 19, 2018: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29671678/chronological-age-vs-biological-age-a-retrospective-analysis-on-age-specific-serum-anti-m%C3%A3-llerian-hormone-levels-for-3280-females-in-reproductive-center-clinic
#10
Jieru Zhu, Tao Li, Weijie Xing, Hui Lin, Jianping Ou
The aim of the present study was to determine the correlation between chronological age and biological age by characterizing age-specific serum anti-Müllerian hormone (AMH) values for 3280 Chinese women. A retrospective analysis including 3280 females between 10 to 52 years old was conducted from January 2016 to December 2016 in the clinical laboratory of Center for Reproductive Medicine, The Third Affiliated Hospital of Sun Yat-sen University, China. All included women were divided into several groups by age...
April 19, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29669821/recognition-of-recurrent-protein-expression-patterns-in-pediatric-acute-myeloid-leukemia-identified-new-therapeutic-targets
#11
Fieke W Hoff, Chenyue W Hu, Yihua Qiu, Andrew Ligeralde, Suk-Young Yoo, Hasan Mahmud, Eveline Sjm De Bont, Amina A Qutub, Terzah M Horton, Steven M Kornblau
Heterogeneity in the genetic landscape of pediatric acute myeloid leukemia (AML) makes personalized medicine challenging. As genetic events are mediated by the expression and function of proteins, recognition of recurrent protein patterns could enable classification of pediatric AML patients and could reveal crucial protein dependencies. This could help to rationally select combinations of therapeutic targets. To determine if protein expression levels could be clustered into functionally relevant groups, custom Reverse Phase Protein Arrays (RPPA) were performed on pediatric AML (n=95) and CD34+ normal bone marrow (n=10) clinical specimens using 194 validated antibodies...
April 18, 2018: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29668600/chilean-gastric-cancer-task-force-a-study-protocol-to-obtain-a-clinical-and-molecular-classification-of-a-cohort-of-gastric-cancer-patients
#12
Gareth I Owen, Mauricio P Pinto, Ignacio N Retamal, María F Fernádez, Betzabe Cisternas, Sebastian Mondaca, Cesar Sanchez, Hector Galindo, Bruno Nervi, Carolina Ibañez, Francisco Acevedo, Jorge Madrid, José Peña, Maria Loreto Bravo, Maria Jose Maturana, Miguel Cordova-Delgado, Diego Romero, Nathaly de la Jara, Javiera Torres, Maria Rodriguez-Fernandez, Manuel Espinoza, Carlos Balmaceda, Matías Freire, Valentina Gárate-Calderón, Fernando Crovari, Paula Jimenez-Fonseca, Alberto Carmona-Bayonas, Ariel Zwenger, Ricardo Armisen, Alejandro H Corvalan, Marcelo Garrido
Gastric cancer (GC) is the world's second-leading cause of neoplastic mortality. Genetic alterations, response to treatments, and mortality rates are highly heterogeneous across different regions. Within Latin America, GC is the leading cause of cancer death in Chile, affecting 17.6 per 100,000 people and causing >3000 deaths/y. Clinical outcomes and response to "one size fits all" therapies are highly heterogeneous and thus a better stratification of patients may aid cancer treatment and response...
April 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29668475/rare-renal-disease-in-macedonia-an-update
#13
Velibor Tasic, Zoran Gucev, Momir Polenakovic
Rare renal diseases (RRD) are an important category of rare disease (RD) as they can do great damage to the patients, families and society. The patient may undergo years even decades of numerous investigations including invasive procedures and yet not have definitive and precise diagnose and therefore, no opportunity for appropriate treatment. The great progress in molecular genetic techniques characterized many Mendelian diseases on molecular level. This gave the possibility for appropriate prevention and treatment interventions, genetic counseling and prenatal diagnosis...
December 1, 2017: Prilozi (Makedonska Akademija Na Naukite i Umetnostite. Oddelenie za Medicinski Nauki)
https://www.readbyqxmd.com/read/29668440/towards-harmonization-of-external-quality-assessment-proficiency-testing-in-hemostasis
#14
Emmanuel J Favaloro, Ian Jennings, John Olson, Elizabeth M Van Cott, Roslyn Bonar, Robert Gosselin, Piet Meijer
Quality in diagnostic testing represents a key target of laboratory medicine, for which an assurance around the quality of testing is expected from all involved in the process. Laboratories attempt to assure the quality of their testing by various processes, but especially by performance of internal quality control and external quality assessment (EQA). This is especially true for tests of hemostasis and coagulation. EQA in general provides information on test accuracy and on evaluation of long-term laboratory performance...
April 18, 2018: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29666832/structure-and-function-analysis-in-circulating-tumor-cells-using-nanotechnology-to-study-nuclear-size-in-prostate-cancer
#15
REVIEW
Nu Yao, Yu-Jen Jan, Shirley Cheng, Jie-Fu Chen, Leland Wk Chung, Hsian-Rong Tseng, Edwin M Posadas
Professor Donald Coffey and his laboratory pioneered studies showing the relationships between nuclear shape and cellular function. In doing so, he and his students established the field of nuclear morphometry in prostate cancer. By using perioperative tissues via biopsies and surgical sampling, Dr. Coffey's team discovered that nuclear shape and other pathologic features correlated with clinical outcome measures. Cancer cells also exist outside of solid tumor masses as they can be shed from both primary and metastatic lesions into the circulatory system...
2018: American Journal of Clinical and Experimental Urology
https://www.readbyqxmd.com/read/29666553/the-potential-of-component-resolved-diagnosis-in-laboratory-diagnostics-of-allergy
#16
REVIEW
Slavica Dodig, Ivana Čepelak
The initial laboratory approach in the diagnosis of allergies is to detect the type of allergic reaction, i.e. whether the patient's allergy is mediated by immunoglobulin E (IgE) or not. For this purpose, the concentration of total serum IgE (tIgE) and specific IgE (sIgE) are determined. Progress in laboratory diagnostics is the use of component-resolved diagnosis (CRD) which implies determination of sIgE against purified native and recombinant allergenic molecules. Component-resolved diagnosis is used in laboratory practice as singleplex and multiplex assays...
June 15, 2018: Biochemia Medica: časopis Hrvatskoga Društva Medicinskih Biokemičara
https://www.readbyqxmd.com/read/29664177/-osler-warned-was-william-osler-a-grave-robber-while-at-mcgill-or-was-he-a-victim-or-perpetrator-of-one-final-practical-joke
#17
James R Wright
Bodysnatching was an illegal way to procure cadavers for anatomical dissection before the existence of effective anatomy legislation. As knowledge of anatomy was fundamental to medical practice, many famous 19th century physicians turned a blind eye to this activity or even participated. Sir William Osler, perhaps the most revered physician of all time, received his medical degree from McGill University in 1872 and then served as pathologist at Montreal General Hospital from 1874 to 1884, where he began a career which culminated in him becoming both the first Professor of Medicine at Johns Hopkins and then Regius Professor at Oxford...
April 17, 2018: Clinical Anatomy
https://www.readbyqxmd.com/read/29662914/ligament-strain-response-between-lower-extremity-contralateral-pairs-during-in-vitro-landing-simulation
#18
April L McPherson, Nathanial A Bates, Nathan D Schilaty, Christopher V Nagelli, Aaron J Krych, Timothy E Hewett
Background: Limb asymmetries, as determined through in vivo biomechanical measures, are known risk factors for anterior cruciate ligament (ACL) injury. Previous cadaveric studies have shown a lack of significant differences in ligament strain between contralateral lower extremities when identical kinematics were simulated on specimens. Recent methodological developments have applied in vivo knee kinetics to exert landing forces on cadaveric lower extremities to mimic ACL injury events, but it is unknown whether contralateral limbs fail in a consistent manner during impact simulator testing...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29659551/time-course-investigation-of-small-molecule-metabolites-in-map-stored-red-blood-cells-using-uplc-qtof-ms
#19
Yong Zhou, Zhiyun Meng, Hui Gan, Ying Zheng, Xiaoxia Zhu, Zhuona Wu, Jian Li, Ruolan Gu, Guifang Dou
Red blood cells (RBCs) are routinely stored for 35 to 42 days in most countries. During storage, RBCs undergo biochemical and biophysical changes known as RBC storage lesion, which is influenced by alternative storage additive solutions (ASs). Metabolomic studies have been completed on RBCs stored in a number of ASs, including SAGM, AS-1, AS-3, AS-5, AS-7, PAGGGM, and MAP. However, the reported metabolome analysis of laboratory-made MAP-stored RBCs was mainly focused on the time-dependent alterations in glycolytic intermediates during storage...
April 16, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29657434/inventory-of-lice-of-mammals-and-farmyard-chicken-in-north-eastern-algeria
#20
Mohamed Nadir Meguini, Souad Righi, Fayçal Zeroual, Khelaf Saidani, Ahmed Benakhla
Background and Aim: Lice are permanent ectoparasites, extremely specific to their hosts. Their great importance in veterinary medicine remain significant, they can cause their direct pathogenic actions like irritability, dermatitis, anemia, decreased weight gain, and milk production. The purpose of this work was to made the first time an inventory of mammalian lice in North-eastern Algeria. Materials and Methods: Our survey of lice infestation was conducted on several animal species from five provinces of North-eastern Algeria...
March 2018: Veterinary World
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