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https://www.readbyqxmd.com/read/28224382/retrospective-review-of-genomic-testing-in-breast-cancer-does-it-improve-outcome
#1
Grady M Gastelum, Cyrus Iqbal, Susan G Hilsenbeck, Mothaffar F Rimawi, Polly Niravath
PURPOSE: Tumor genomic testing has become widely available in many clinical settings. However, we do not yet understand how to best harness the information yielded from this testing. We retrospectively investigated the clinical courses of 24 patients who underwent tumor genomic testing to determine whether targeted therapy is associated with improved progression free survival (PFS) compared to standard therapy. METHODS: The patient population comprised metastatic breast cancer patients who underwent tumor genomic testing (testing biopsy specimens of primary or metastatic lesions for 50 commonly mutated genes) at our institution between September 1, 2010 and June 1, 2015...
February 21, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28223257/the-fecal-microbiome-of-dogs-with-exocrine-pancreatic-insufficiency
#2
Anitha Isaiah, Joseph Cyrus Parambeth, Jörg M Steiner, Jonathan A Lidbury, Jan S Suchodolski
Exocrine pancreatic insufficiency (EPI) in dogs is a syndrome of inadequate synthesis and secretion of pancreatic enzymes. Small intestinal bacterial dysbiosis occurs in dogs with EPI, and is reversed with pancreatic enzyme therapy. However, there are no studies evaluating the fecal microbiome of dogs with EPI. The objective of this study was to evaluate the fecal microbiome of dogs with EPI. Three day pooled fecal samples were collected from healthy dogs (n = 18), untreated (n = 7) dogs with EPI, and dogs with EPI treated with enzyme replacement therapy (n = 19)...
February 18, 2017: Anaerobe
https://www.readbyqxmd.com/read/28211813/classification-of-depression-cognitive-disorders-and-co-morbid-depression-and-cognitive-disorders-with-perfusion-spect-neuroimaging
#3
Daniel G Amen, Pavitra Krishnamani, Somayeh Meysami, Andrew Newberg, Cyrus A Raji
BACKGROUND: Depression and cognitive disorders (CDs) are two common co-morbid afflictions that commonly present with overlapping symptoms. OBJECTIVE: To evaluate if perfusion neuroimaging with brain SPECT can distinguish persons with depression from those with CDs or both conditions. METHODS: Inclusion criteria were DSM-IV defined depression or CDs (Alzheimer's disease, vascular dementia, dementia not otherwise specified, and amnestic disorders not otherwise specified) including persons with both (total n = 4,541; 847 CDs, 3,269 depression, 425 with both)...
February 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28209371/the-effect-of-patient-age-at-intervention-on-risk-of-implant-revision-after-total-replacement-of-the-hip-or-knee-a-population-based-cohort-study
#4
Lee E Bayliss, David Culliford, A Paul Monk, Sion Glyn-Jones, Daniel Prieto-Alhambra, Andrew Judge, Cyrus Cooper, Andrew J Carr, Nigel K Arden, David J Beard, Andrew J Price
BACKGROUND: Total joint replacements for end-stage osteoarthritis of the hip and knee are cost-effective and demonstrate significant clinical improvement. However, robust population based lifetime-risk data for implant revision are not available to aid patient decision making, which is a particular problem in young patient groups deciding on best-timing for surgery. METHODS: We did implant survival analysis on all patients within the Clinical Practice Research Datalink who had undergone total hip replacement or total knee replacement...
February 13, 2017: Lancet
https://www.readbyqxmd.com/read/28208741/mechanisms-of-post-replication-dna-repair
#5
REVIEW
Yanzhe Gao, Elizabeth Mutter-Rottmayer, Anastasia Zlatanou, Cyrus Vaziri, Yang Yang
Accurate DNA replication is crucial for cell survival and the maintenance of genome stability. Cells have developed mechanisms to cope with the frequent genotoxic injuries that arise from both endogenous and environmental sources. Lesions encountered during DNA replication are often tolerated by post-replication repair mechanisms that prevent replication fork collapse and avert the formation of DNA double strand breaks. There are two predominant post-replication repair pathways, trans-lesion synthesis (TLS) and template switching (TS)...
February 8, 2017: Genes
https://www.readbyqxmd.com/read/28208018/pharmacophore-mapping-of-thienopyrimidine-based-monophosphonate-thp-mp-inhibitors-of-the-human-farnesyl-pyrophosphate-synthase
#6
Jaeok Park, Chun Yuen Leung, Alexios N Matralis, Cyrus M Lacbay, Michail Tsakos, Guillermo Fernandez De Troconiz, Albert M Berghuis, Youla S Tsantrizos
The human farnesyl pyrophosphate synthase (hFPPS), a key regulatory enzyme in the mevalonate pathway, catalyzes the biosynthesis of the C-15 isoprenoid farnesyl pyrophosphate (FPP). FPP plays a crucial role in the post-translational prenylation of small GTPases that perform a plethora of cellular functions. Although hFPPS is a well-established therapeutic target for lytic bone diseases, the currently available bisphosphonate drugs exhibit poor cellular uptake and distribution into non-skeletal tissues. Recent drug discovery efforts have focused primarily on allosteric inhibition of hFPPS and the discovery of non-bisphosphonate drugs for potentially treating non-skeletal diseases...
February 16, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28195358/parkinson-s-disease-and-parkinson-s-disease-medications-have-distinct-signatures-of-the-gut-microbiome
#7
Erin M Hill-Burns, Justine W Debelius, James T Morton, William T Wissemann, Matthew R Lewis, Zachary D Wallen, Shyamal D Peddada, Stewart A Factor, Eric Molho, Cyrus P Zabetian, Rob Knight, Haydeh Payami
BACKGROUND: There is mounting evidence for a connection between the gut and Parkinson's disease (PD). Dysbiosis of gut microbiota could explain several features of PD. OBJECTIVE: The objective of this study was to determine if PD involves dysbiosis of gut microbiome, disentangle effects of confounders, and identify candidate taxa and functional pathways to guide research. METHODS: A total of 197 PD cases and 130 controls were studied. Microbial composition was determined by 16S rRNA gene sequencing of DNA extracted from stool...
February 14, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28191694/generalizability-of-findings-from-randomized-controlled-trials-application-to-the-national-institute-of-drug-abuse-clinical-trials-network
#8
Ryoko Susukida, Rosa M Crum, Cyrus Ebnesajjad, Elizabeth A Stuart, Ramin Mojtabai
AIMS: To compare randomized controlled trial (RCT) sample treatment effects with the population effects of substance use disorder (SUD) treatment. DESIGN: Statistical weighting was used to re-compute the effects from ten RCTs such that the participants in the trials had characteristics that resembled those of patients in the target populations. SETTINGS: Multi-site RCTs and usual SUD treatment settings in the USA. PARTICIPANTS: A total of 3,592 patients in ten RCTs and 1,602,226 patients from usual SUD treatment settings between 2001 and 2009...
February 13, 2017: Addiction
https://www.readbyqxmd.com/read/28191381/spontaneous-unilateral-adrenal-hemorrhage-in-pregnancy
#9
Salam Kadhem, Rawaa Ebrahem, Cyrus Munguti, Rami Mortada
Spontaneous adrenal hemorrhage (SAH) is a serious medical condition associated with variable clinical presentation depending on the extent of the hemorrhage. Pregnancy-induced adrenal hemorrhage is poorly understood. A low cortisol level in the peripartum period with radiological findings is sufficient to establish the diagnosis. Prompt hormone replacement and supportive care to ensure good clinical outcomes is crucial. Due to the potentially life-threatening complications, physicians should have a high suspicion for adrenal hemorrhage when they evaluate patients with hypotension, fatigue, and abdominal pain during the peripartum period...
January 13, 2017: Curēus
https://www.readbyqxmd.com/read/28188299/novel-mechanism-of-decyanation-of-gdc-0425-by-cytochrome-p450
#10
Ryan H Takahashi, Jason S Halladay, Michael Siu, Yuan Chen, Cornelis Eca Hop, Siamak Cyrus Khojasteh, Shuguang Ma
GDC-0425 is an orally bioavailable small molecule inhibitor of checkpoint kinase 1 (Chk1) that was investigated as a novel co-therapy to potentiate chemotherapeutic drugs such as gemcitabine. In the radiolabeled ADME study in Sprague-Dawley rats, trace level but long-lived 14C-labeled plasma thiocyanate was observed. This thiocyanate originated from metabolic decyanation of GDC-0425 and rapid conversion of cyanide to thiocyanate. Excretion studies indicated decyanation was a minor metabolic pathway, but placing 14C at nitrile magnified its observation...
February 10, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28187366/a-combination-of-dietary-n-3-fatty-acids-and-a-cyclooxygenase-1-inhibitor-attenuates-nonalcoholic-fatty-liver-disease-in-mice
#11
Viswanathan Saraswathi, Curtis Perriotte-Olson, Murali Ganesan, Cyrus V Desouza, Yazen Alnouti, Michael J Duryee, Geoffrey M Thiele, Tara M Nordgren, Dahn L Clemens
We sought to determine whether a combination of purified n-3 fatty acids (n-3) and SC-560 (SC), a cyclooxygenase-1-specific inhibitor, is effective in ameliorating nonalcoholic fatty liver disease in obesity. Female wild-type mice were fed a high-fat and high-cholesterol diet (HF) supplemented with n-3 in the presence or absence of SC. Mice treated with SC alone exhibited no change in liver lipids, whereas n-3-fed mice tended to have lower hepatic lipids. Mice given n-3+SC had significantly lower liver lipids compared with HF controls indicating enhanced lipid clearance...
January 27, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28186272/bilateral-internal-mammary-artery-y-construct-with-multiple-sequential-grafting-improves-survival-compared-to-bilateral-internal-mammary-artery-with-additional-vein-grafts-10-year-experience-at-2-different-institutions%C3%A2
#12
David Glineur, Pierre-Yves Etienne, Cyrus E Kuschner, Richard E Shaw, Giovanni Ferrari, Nancy Rioux, Spiridon Papadatos, Mariano Brizzio, Bruce Mindich, Alex Zapolanski, Juan B Grau
No abstract text is available yet for this article.
February 1, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28178596/automated-2d-hplc-method-for-characterization-of-protein-aggregation-with-in-line-fraction-collection-device
#13
Abasha Williams, Erik K Read, Cyrus D Agarabi, Scott Lute, Kurt A Brorson
Monoclonal antibodies are mainly produced by mammalian cell culture, which due to its complexity, results in a wide range of product variants/isoforms. With the growing implementation of Quality by Design (QbD) and Process Analytical Technology (PAT) in drug manufacturing, monitoring and controlling quality attributes within a predefined range during manufacturing may provide added consistency to product quality. To implement these concepts, more robust analytical tools could reduce the time needed for monitoring quality attributes during upstream processing...
January 25, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28174295/optimizing-local-control-in-high-grade-uterine-sarcoma-adjuvant-vaginal-vault-brachytherapy-as-part-of-a-multimodal-treatment
#14
Pierre Annede, Sébastien Gouy, Renaud Mazeron, Enrica Bentivegna, Pierre Maroun, Claire Petit, Isabelle Dumas, Alexandra Leary, Catherine Genestie, Catherine Lhommé, Eric Deutsch, Philippe Morice, Patricia Pautier, Christine Haie-Meder, Cyrus Chargari
PURPOSE: The phase III European Organization for Research and Treatment of Cancer 55874 study has shown that external beam radiotherapy (EBRT) given as adjuvant treatment decreased locoregional recurrences from 40% to 20% in patients (pts) with localized uterine sarcomas (US). No data exist, however, on the place of brachytherapy (BT). MATERIAL AND METHODS: We conducted a single-center retrospective analysis of pts receiving adjuvant BT of the vaginal vault based on the vaginal mold technique as part of their multimodal adjuvant treatment for a high-grade US from 1985 to 2015...
February 7, 2017: Oncologist
https://www.readbyqxmd.com/read/28169941/novel-index-to-quantify-the-risk-of-surgery-in-the-setting-of-adult-spinal-deformity-a-study-on-10-912-patients-from-the-nationwide-inpatient-sample
#15
Bassel G Diebo, Cyrus M Jalai, Vincent Challier, Bryan J Marascalchi, Samantha R Horn, Gregory W Poorman, Olivia J Bono, Denis Cherkalin, Nancy Worley, Jason Oh, Qais Naziri, Allison Spitzer, Kris Radcliff, Ashish Patel, Virginie Lafage, Carl B Paulino, Peter G Passias
STUDY DESIGN: Retrospective review of the Nationwide Inpatient Sample from 2001 to 2010, a prospectively collected national database. OBJECTIVE: Structure an index to quantify adult spinal deformity (ASD) surgical risk based on risk factors for medical complications, surgical complications, revisions (R), mortality (M) rates, and length of hospital stay. SUMMARY OF BACKGROUND DATA: Evidence supporting ASD surgery cost-effectiveness and anticipating surgical risk is critical to evaluate the risk/benefit balance of such treatment for patients...
February 6, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28169092/consensus-evaluation-of-radioactivity-in-soil-reference-materials-in-the-context-of-an-npl-environmental-radioactivity-proficiency-test-exercise
#16
Julian Dean, Sean Collins, Maria Garcia Miranda, Peter Ivanov, Cyrus Larijani, Selina Woods
The development of two radioactivity-in-soil reference materials is described - one for peat and one for soil with high sand content. Each bulk material was processed, subdivided and measured before being sent to participants in an NPL Environmental Radioactivity Proficiency Test Exercise. Activity concentrations of radionuclides in each material were determined by 'consensus' evaluations of participants' results using two weighted mean methods. The project demonstrated the use of such exercises in delivering reference materials to the user community...
January 25, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28159552/contribution-of-image-guided-adaptive-brachytherapy-to-pelvic-nodes-treatment-in-locally-advanced-cervical-cancer
#17
Warren Bacorro, Isabelle Dumas, Antonin Levy, Eleonor Rivin Del Campo, Charles-Henri Canova, Tony Felefly, Andres Huertas, Fanny Marsolat, Christine Haie-Meder, Cyrus Chargari, Renaud Mazeron
PURPOSE: With the increasing use of simultaneous integrated boost in the treatment of cervical cancer, there is a need to anticipate the brachytherapy (BT) contribution at the level of the pathologic pelvic lymph nodes. This study aimed to report the dose delivered at their level during BT. METHODS AND MATERIALS: Patients with pelvic nodal involvement and treated with a combination of chemoradiation followed by image-guided adaptive pulsed-dose-rate BT were selected...
January 31, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28150753/simvastatin-suppresses-the-dna-replication-licensing-factor-mcm7-and-inhibits-the-growth-of-tamoxifen-resistant-breast-cancer-cells
#18
Zheyong Liang, Wenjie Li, Jie Liu, Juan Li, Fang He, Yina Jiang, Lu Yang, Pingping Li, Bo Wang, Yaochun Wang, Yu Ren, Jin Yang, Zhijun Luo, Cyrus Vaziri, Peijun Liu
Acquired tamoxifen resistance (TamR) remains a major challenge in breast cancer endocrine therapy. The mechanism of acquiring tamoxifen resistance remains elusive, and no effective drugs are available. In this investigation, we determined that the expression of the DNA damage marker γH2AX is upregulated under minichromosome maintenance protein 7 (MCM7) knockdown in phospho Ser807/811-retinoblastoma protein (p-Rb) defect cells. In addition, the expression of p-Rb was lower in TamR cells than in parental cells, and the expression of γH2AX was significantly upregulated when MCM7 was knocked down in TamR cells...
February 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28150363/blood-donation-and-testosterone-replacement-therapy
#19
Benjamin Chin-Yee, Alejandro Lazo-Langner, Terrie Butler-Foster, Cyrus Hsia, Ian Chin-Yee
BACKGROUND: Polycythemia is the most common adverse effect of testosterone replacement therapy (TRT) and may predispose patients to adverse vascular events. Current Canadian guidelines recommend regular laboratory monitoring and discontinuing TRT or reducing the dose if the hematocrit exceeds 54% (hemoglobin ≥180 g/L). This threshold has been interpreted by some physicians and patients to indicate the need for phlebotomy or blood donation while on TRT. STUDY DESIGN AND METHODS: We reviewed all male blood donors in Southwestern Ontario at Canadian Blood Services from December 2013 to March 2016 who self-identified or were found on donor screening to be on TRT...
February 1, 2017: Transfusion
https://www.readbyqxmd.com/read/28148702/minimising-the-costs-of-temperature-monitoring-in-hospitals
#20
Cyrus Kumana
No abstract text is available yet for this article.
February 1, 2017: Postgraduate Medical Journal
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