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https://www.readbyqxmd.com/read/28238887/coenzyme-a-thioester-formation-of-11-and-15-oxo-eicosatetraenoic-acid
#1
Clementina Mesaros, Alejandro D Arroyo, Ian A Blair, Nathaniel W Snyder
Release of arachidonic acid (AA) by cytoplasmic phospholipase A2 (cPLA2), followed by metabolism through cyclooxygenase-2 (COX-2) and 15-hydroxyprostaglandin dehydrogenase (15-PGDH), results in the formation of the eicosanoids 11-oxo- and 15-oxo-eicosatetraenoic acid (oxo-ETE). Both 11-oxo- and 15-oxo-ETE have been identified in human biospecimens but their function and further metabolism is poorly described. The oxo-ETEs contain an α,β-unsaturated ketone and a free carbocyclic acid, and thus may form Michael adducts with a nucleophile or a thioester with the free thiol of Coenzyme A (CoA)...
February 23, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28212415/aflatoxin-exposure-during-the-first-36-months-of-life-was-not-associated-with-impaired-growth-in-nepalese-children-an-extension-of-the-mal-ed-study
#2
Nicole J Mitchell, Hui-Husan Hsu, Ram Krishna Chandyo, Binob Shrestha, Ladaporn Bodhidatta, Yu-Kang Tu, Yun-Yun Gong, Patricia A Egner, Manjeswori Ulak, John D Groopman, Felicia Wu
Exposure to aflatoxin, a mycotoxin common in many foods, has been associated with child growth impairment in sub-Saharan Africa. To improve our understanding of growth impairment in relation to aflatoxin and other risk factors, we assessed biospecimens collected in Nepalese children at 15, 24, and 36 months of age for aflatoxin exposure. Children (N = 85) enrolled in the Bhaktapur, Nepal MAL-ED study encompassed the cohort analysed in this study. Exposure was assessed through a plasma biomarker of aflatoxin exposure: the AFB1-lysine adduct...
2017: PloS One
https://www.readbyqxmd.com/read/28208263/visualization-quantification-and-alignment-of-spectral-drift-in-population-scale-untargeted-metabolomics-data
#3
Jeramie D Watrous, Mir Henglin, Brian Claggett, Kim A Lehmann, Martin G Larson, Susan Cheng, Mohit Jain
Untargeted liquid-chromatography-mass spectrometry (LC-MS)-based metabolomics analysis of human biospecimens has become among the most promising strategies for probing the underpinnings of human health and disease. Analysis of spectral data across population scale cohorts, however, is precluded by day-to-day nonlinear signal drifts in LC retention time or batch effects that complicate comparison of thousands of untargeted peaks. To date, there exists no efficient means of visualization and quantitative assessment of signal drift, correction of drift when present, and automated filtering of unstable spectral features, particularly across thousands of data files in population scale experiments...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28194268/filipino-women-s-diet-and-health-study-filwhel-design-and-methods
#4
Grace P Abris, Sangmo Hong, Sherlyn Mae P Provido, Jung Eun Lee, Chang Beom Lee
BACKGROUND: Immigration to South Korea from neighboring Asian countries has risen dramatically, primarily due to marriage between Korean men and foreign women. Although Filipino women rank fourth among married immigrant women, little is known about the health condition of this population. This manuscript focuses on the design and methods of Filipino women's diet and health study (FiLWHEL). SUBJECTS/METHODS: FiLWHEL is a cohort of Filipino women married to Korean men, aged 19 years old or over...
February 2017: Nutrition Research and Practice
https://www.readbyqxmd.com/read/28194131/needs-and-requirements-of-modern-biobanks-on-the-example-of-dystonia-syndromes
#5
Ebba Lohmann, Thomas Gasser, Kathrin Grundmann
Dystonia belongs to a group of rare diseases (RDs) characterized by etiologic heterogeneity, affection often in childhood, severe and variable clinical manifestation. The burden of this disease is aggravated by the lack of effective and specific treatment. In the field of dystonia as in other RDs the number of available biospecimens is, in general, limited. Here, we report a new approach to collect clinical and genetic data in biospecimens maintained collaboratively by researchers and their associated institutions in a decentralized system...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28186851/efficiently-maintaining-a-national-resource-of-historical-and-contemporary-biological-collections-the-nhlbi-biorepository-model
#6
Katheryn E Shea, Elizabeth L Wagner, Leah Marchesani, Kevin Meagher, Carol Giffen
INTRODUCTION: Reducing costs by improving storage efficiency has been a focus of the National Heart, Lung, and Blood Institute (NHLBI) Biologic Specimen Repository (Biorepository) and Biologic Specimen and Data Repositories Information Coordinating Center (BioLINCC) programs for several years. METHODS: Study specimen profiles were compiled using the BioLINCC collection catalog. Cost assessments and calculations on the return on investments to consolidate or reduce a collection, were developed and implemented...
February 2017: Biopreservation and Biobanking
https://www.readbyqxmd.com/read/28181200/a-community-driven-intervention-for-improving-biospecimen-donation-in-african-american-communities
#7
Kushal Patel, Wendelyn Inman, Jemal Gishe, Owen Johnson, Elizabeth Brown, Mohamed Kanu, Rosemary Theriot, Maureen Sanderson, Pamela Hull, Margaret Hargreaves
INTRODUCTION: Human biospecimens are an invaluable resource for addressing cancers and other chronic diseases. The purpose of this study was to assess the impact of an educational intervention on biospecimen knowledge and attitudes. METHODS: The participants consisted of 112 African Americans, 18 years and older, and who had not provided biospecimens for any health-related research in the past. A total of 55 participants received the educational brochure, and 57 received the educational video...
February 8, 2017: Journal of Racial and Ethnic Health Disparities
https://www.readbyqxmd.com/read/28176229/charting-the-maternal-and-infant-microbiome-what-is-the-role-of-diabetes-and-obesity-in-pregnancy
#8
REVIEW
Sirtaj Singh, Margaret R Karagas, Noel T Mueller
PURPOSE OF REVIEW: The purpose of this review is to summarize the evidence on whether diabetes, obesity, and related metabolic derangements during pregnancy are associated with the maternal and infant microbiomes, and to identify gaps in the literature and offer guidance on future research on this topic. RECENT FINDINGS: We found circumstantial evidence from four observational studies that the maternal gut microbiome was associated with either pre-pregnancy body mass index, gestational weight gain, gestational diabetes, and/or related metabolic biomarkers in pregnancy; we did not identify any studies that examined whether the vaginal microbiome varied according to these metabolic parameters...
February 2017: Current Diabetes Reports
https://www.readbyqxmd.com/read/28164165/accuracy-of-self-reported-smoking-exposure-among-bladder-cancer-patients-undergoing-surveillance-at-a-tertiary-referral-center
#9
Alan E Thong, Stacey Petruzella, Irene Orlow, Emily C Zabor, Behfar Ehdaie, Jamie S Ostroff, Bernard H Bochner, Helena Furberg Barnes
BACKGROUND: Smoking is a risk factor for developing bladder cancer (BCa). Even though continued exposure after diagnosis may adversely affect prognosis, patients may be reluctant to disclose to their physicians that they are currently smoking, leading to inaccurate reporting of exposure and missed opportunities to deliver smoking-cessation advice and treatment in the context of cancer care. OBJECTIVE: We examined the extent of misclassification of recent smoking exposure among patients undergoing BCa surveillance...
October 2016: European Urology Focus
https://www.readbyqxmd.com/read/28151830/religiousness-spirituality-and-salivary-cortisol-in-breast-cancer-survivorship-a-pilot-study
#10
Jennifer M Hulett, Jane M Armer, Emily Leary, Bob R Stewart, Roxanne McDaniel, Kandis Smith, Rami Millspaugh, Joshua Millspaugh
BACKGROUND: Psychoneuroimmunological theory suggests a physiological relationship exists between stress, psychosocial-behavioral factors, and neuroendocrine-immune outcomes; however, evidence has been limited. OBJECTIVE: The primary aim of this pilot study was to determine feasibility and acceptability of a salivary cortisol self-collection protocol with a mail-back option for breast cancer survivors. A secondary aim was to examine relationships between religiousness/spirituality (R/S), perceptions of health, and diurnal salivary cortisol (DSC) as a proxy measure for neuroendocrine activity...
February 2, 2017: Cancer Nursing
https://www.readbyqxmd.com/read/28140617/progressive-consent-and-specimen-accrual-models-to-address-sustainability-a-decade-s-experience-at-an-oregon-biorepository
#11
John A Ost, Paul W Newton, Duncan R Neilson, Joseph A Cioffi, P Ashley Wackym, R Serene Perkins
BACKGROUND: The Legacy Biorepository is a College of American Pathologists-accredited biorepository operating within a seven-hospital healthcare system, with a decade's experience in specimen accrual, storage, and distribution. While standardization of our practices through accreditation remains a priority, we along with others face challenges with regard to sustainability. Purposeful changes in our consent process, which we term "progressive consent," are expected to improve sustainability and operational flexibility while increasing our scientific impact...
February 2017: Biopreservation and Biobanking
https://www.readbyqxmd.com/read/28139123/biomonitoring-dna-adducts-of-cooked-meat-carcinogens-in-human-prostate-by-nano-liquid-chromatography-high-resolution-tandem-mass-spectrometry-identification-of-2-amino-1-methyl-6-phenylimidazo-4-5-b-pyridine-dna-adduct
#12
Shun Xiao, Jingshu Guo, Byeong Hwa Yun, Peter W Villalta, Suprita Krishna, Resha Tejpaul, Paari Murugan, Christopher J Weight, Robert J Turesky
Epidemiologic studies have reported an association between frequent consumption of well-done cooked meats and prostate cancer risk. However, unambiguous physiochemical markers of DNA damage from carcinogens derived from cooked meats, such as DNA adducts, have not been identified in human samples to support this paradigm. We have developed a highly sensitive nano-LC-Orbitrap MS (n) method to measure DNA adducts of several carcinogens originating from well-done cooked meats, tobacco smoke, and environmental pollution, including 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP), 2-amino-9H-pyrido[2,3-b]indole (AαC), 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx), benzo[a]pyrene (B[a]P), and 4-aminobiphenyl (4-ABP)...
December 20, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/28138995/time-course-analysis-of-rna-quality-in-placenta-preserved-by-rnalater-or-flash-freezing
#13
Nicole M Martin, Katherine M Cooke, Caitlin C Radford, Lauren E Perley, Michelle Silasi, Clare A Flannery
PROBLEM: Preservation of biospecimen quality is critical to accurately and reliably assessing genes and proteins. We evaluated the effect of preparation method and storage duration on RNA quality in placenta and decidua. METHOD OF STUDY: Aliquots of nine placentas and decidua were placed in RNAlater(®) (RL) or flash frozen (FF) within 30 minutes of delivery. RNA was extracted immediately (baseline) and from matched samples stored at -80°C for 1 and 8-10 months...
January 31, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28137566/mass-spectrometry-based-analysis-for-the-discovery-and-validation-of-potential-colorectal-cancer-stool-biomarkers
#14
C S Ang, M S Baker, E C Nice
Colorectal cancer (CRC) is the third leading cause of cancer mortality for both men and women, and the second leading cause of cancer death for men and women combined. If detected early, before metastasis has occurred, survival following surgical resection of the tumor is >90%. Early detection is therefore critical for effective disease surveillance. Unfortunately, current biomarker assays lack the necessary sensitivity and specificity for reliable early disease detection. Development of new robust, non- or minimally invasive specific and sensitive biomarkers or panels with improved compliance and performance is therefore urgently required...
2017: Methods in Enzymology
https://www.readbyqxmd.com/read/28126763/regulators-drop-controversial-biospecimen-consent-proposal
#15
Jocelyn Kaiser
No abstract text is available yet for this article.
January 27, 2017: Science
https://www.readbyqxmd.com/read/28125619/biospecimen-repositories-and-integrated-databases-as-critical-infrastructure-for-pathogen-discovery-and-pathobiology-research
#16
Jonathan L Dunnum, Richard Yanagihara, Karl M Johnson, Blas Armien, Nyamsuren Batsaikhan, Laura Morgan, Joseph A Cook
No abstract text is available yet for this article.
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28125105/conditional-reprogramming-and-long-term-expansion-of-normal-and-tumor-cells-from-human-biospecimens
#17
Xuefeng Liu, Ewa Krawczyk, Frank A Suprynowicz, Nancy Palechor-Ceron, Hang Yuan, Aleksandra Dakic, Vera Simic, Yun-Ling Zheng, Praathibha Sripadhan, Chen Chen, Jie Lu, Tung-Wei Hou, Sujata Choudhury, Bhaskar Kallakury, Dean Tang, Thomas Darling, Rajesh Thangapazham, Olga Timofeeva, Anatoly Dritschilo, Scott H Randell, Christopher Albanese, Seema Agarwal, Richard Schlegel
Historically, it has been difficult to propagate cells in vitro that are derived directly from human tumors or healthy tissue. However, in vitro preclinical models are essential tools for both the study of basic cancer biology and the promotion of translational research, including drug discovery and drug target identification. This protocol describes conditional reprogramming (CR), which involves coculture of irradiated mouse fibroblast feeder cells with normal and tumor human epithelial cells in the presence of a Rho kinase inhibitor (Y-27632)...
February 2017: Nature Protocols
https://www.readbyqxmd.com/read/28103080/organization-of-bbmri-pl-the-polish-biobanking-network
#18
Małgorzata Witoń, Dominik Strapagiel, Joanna Gleńska-Olender, Anna Chróścicka, Katarzyna Ferdyn, Jarosław Skokowski, Leszek Kalinowski, Jakub Pawlikowski, Błażej Marciniak, Markus Pasterk, Agnieszka Matera-Witkiewicz, Łukasz Kozera
In Poland storage of human biological samples takes place at most universities and scientific institutions conducting research projects in the field of biomedicine. The First International Biobanking Conference organized by the Ministry of Science and Higher Education in 2014 shed a light on the situation of Polish biobanking infrastructures. The country has around 40 large biorepositories, which store unique biological material such as whole brains, muscle fibers from patients with rare diseases, as well as thousands of samples from patients with lifestyle diseases...
January 19, 2017: Biopreservation and Biobanking
https://www.readbyqxmd.com/read/28097074/resources-available-for-autism-research-in-the-big-data-era-a-systematic-review
#19
Reem Al-Jawahiri, Elizabeth Milne
Recently, there has been a move encouraged by many stakeholders towards generating big, open data in many areas of research. One area where big, open data is particularly valuable is in research relating to complex heterogeneous disorders such as Autism Spectrum Disorder (ASD). The inconsistencies of findings and the great heterogeneity of ASD necessitate the use of big and open data to tackle important challenges such as understanding and defining the heterogeneity and potential subtypes of ASD. To this end, a number of initiatives have been established that aim to develop big and/or open data resources for autism research...
2017: PeerJ
https://www.readbyqxmd.com/read/28080144/a-survey-of-the-current-situation-of-clinical-biobanks-in-china
#20
Haiyan Li, Mingyu Ni, Peng Wang, Xiaomin Wang
The development of biomedical research urgently needs the support of a large number of high-quality clinical biospecimens. Therefore, human biobanks at different levels have been established successively in China and other countries at a significantly increasing pace in recent years. To better understand the general current state of clinical biobanks in China, we surveyed 42 clinical biobanks based in hospitals and collected information involving their management systems, sharing mechanisms, quality control systems, and informational management systems using closed questionnaire methods...
January 12, 2017: Biopreservation and Biobanking
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