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https://www.readbyqxmd.com/read/28822796/papillary-ductal-plugging-is-a-mechanism-for-early-stone-retention-in-brushite-stone-disease
#1
James C Williams, Michael S Borofsky, Sharon B Bledsoe, Andrew P Evan, Fredric L Coe, Elaine M Worcester, James E Lingeman
PURPOSE: Mechanisms of early stone retention within the kidney are understudied and poorly understood. To date, attachment via Randall's plaque is the only widely accepted theory in this regard, best described in idiopathic calcium oxalate stone formers. Brushite stone formers are known to have distinct papillary morphology relative to calcium oxalate stone formers. As such, we sought to determine whether stone attachment mechanisms in such patients may be similarly unique. MATERIALS AND METHODS: Patients undergoing percutaneous and or ureteroscopic procedures for stone removal were consented for endoscopic renal papillary examination and individual stone collection...
August 16, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28822676/the-value-of-cone-beam-computed-tomography-in-the-detection-of-salivary-stones-prior-to-sialendoscopy
#2
E H van der Meij, K H Karagozoglu, J G A M de Visscher
This study aimed to assess the value of cone beam computed tomography (CBCT) in the detection of salivary stones in patients with signs and symptoms of salivary gland obstruction. A total of 142 major salivary glands were analysed in a cohort of 127 patients with signs and symptoms of salivary gland obstruction. CBCT scans were performed in order to determine the presence of one or more salivary stones. All glands were also investigated by sialendoscopy. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were calculated for the submandibular gland, the parotid gland, and the whole group, based on the observers' abilities to diagnose the presence or absence of calculi in the CBCT scan using the sialendoscopy data as the gold standard...
August 16, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28821414/retention-of-vaginal-breech-delivery-skills-taught-in-simulation
#3
Heather Stone, Joan Crane, Kathy Johnston, Catherine Craig
OBJECTIVE: The optimal frequency of conducting simulation training for high-acuity, low-frequency events in obstetrics and gynaecology residency programs is unknown. This study evaluated retention over time of vaginal breech delivery skills taught in simulation, by comparing junior and senior residents. In addition, the residents' subjective comfort level to perform this skill clinically was assessed. METHODS: This prospective cohort study included 22 obstetrics and gynaecology residents in a Canadian residency training program...
August 15, 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28821411/diagnosis-and-treatment-in-chronic-pancreatitis-an-international-survey-and-case-vignette-study
#4
Yama Issa, Hjalmar C van Santvoort, Paul Fockens, Marc G Besselink, Thomas L Bollen, Marco J Bruno, Marja A Boermeester
BACKGROUND: The aim of the study was to evaluate the current opinion and clinical decision-making process of international pancreatologists, and to systematically identify key study questions regarding the diagnosis and treatment of chronic pancreatitis (CP) for future research. METHODS: An online survey, including questions regarding the diagnosis and treatment of CP and several controversial clinical case vignettes, was send by e-mail to members of various international pancreatic associations: IHPBA, APA, EPC, ESGE and DPSG...
August 15, 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28821379/multicenter-trial-of-the-venatech-convertible-vena-cava-filter
#5
Eric J Hohenwalter, James R Stone, Paul V O'Moore, Steven J Smith, J Bayne Selby, Robert J Lewandowski, Shaun Samuels, Paul M Kiproff, David W Trost, David C Madoff, Jeremy Handel, Eric J Gandras, Athanasios Vlahos, William S Rilling
PURPOSE: To demonstrate rates of successful filter conversion and 6-month major device-related adverse events in subjects with converted caval filters. MATERIALS AND METHODS: An investigational device exemption multicenter, prospective, single-arm study was performed at 11 sites enrolling 149 patients. The VenaTech Convertible Vena Cava Filter (B. Braun Interventional Systems, Inc, Bethlehem, Pennsylvania) was implanted in 149 patients with venous thromboembolism and contraindication to or failure of anticoagulation (n = 119), with high-risk trauma (n = 14), and for surgical prophylaxis (n = 16)...
August 16, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28821195/atypical-igg4-plasmacytic-proliferations-and-lymphomas-characterization-of-11-cases
#6
Jacob R Bledsoe, Zachary S Wallace, Vikram Deshpande, Joshua R Richter, Jason Klapman, Andrew Cowan, John H Stone, Judith A Ferry
Objectives: To report the clinicopathologic features of monotypic immunoglobulin G4+ (IgG4+) lymphoid and plasmacytic proliferations. Methods: Cases were identified from the pathology files. Pathology and clinical materials were reviewed. Results: Eleven cases of monotypic IgG4+ proliferations were identified at nodal, orbital, or salivary sites. Six cases (three men, three women; age, 57-94 years) met criteria for lymphoma or plasma cell neoplasia...
September 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28819656/simulating-the-reactions-of-substituted-pyridinio-n-phosphonates-with-pyridine-as-a-model-for-biological-phosphoryl-transfer
#7
Anna Pabis, Nicholas H Williams, Shina C L Kamerlin
Phosphoryl transfer reactions can proceed through several plausible mechanisms, and the potential for both solvent and substrate-assisted pathways (involving proton transfer to the phosphoryl oxygens) complicates both experimental and computational interpretations. To avoid this problem, we have used electronic structure calculations to probe the mechanisms of the reactions of pyridinio-N-phosphonates with pyridine. These compounds avoid the additional complexity introduced by proton transfer between the nucleophile and the leaving group, while also serving as a valuable model for biological P-N cleavage...
August 18, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28819098/protection-and-consolidation-of-stone-heritage-by-self-inoculation-with-indigenous-carbonatogenic-bacterial-communities
#8
Fadwa Jroundi, Mara Schiro, Encarnación Ruiz-Agudo, Kerstin Elert, Inés Martín-Sánchez, María Teresa González-Muñoz, Carlos Rodriguez-Navarro
Enhanced salt weathering resulting from global warming and increasing environmental pollution is endangering the survival of stone monuments and artworks. To mitigate the effects of these deleterious processes, numerous conservation treatments have been applied that, however, show limited efficacy. Here we present a novel, environmentally friendly, bacterial self-inoculation approach for the conservation of stone, based on the isolation of an indigenous community of carbonatogenic bacteria from salt damaged stone, followed by their culture and re-application back onto the same stone...
August 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28818770/hereditary-multiple-exostoses-as-a-novel-cause-of-bilateral-popliteal-artery-aneurysms-in-the-elderly
#9
Eliza J Ferrari, Rory K Crotty, Katharina Eikermann-Haerter, James R Stone
Hereditary multiple exostoses (HME) is a genetic condition characterized by the development of multiple osteochondromas during childhood and adolescence. On rare occasions, these bony tumors can be associated with vascular injury, most commonly involving the popliteal artery. Such patients typically present with vascular complications in adolescence and young adulthood. We report an autopsy study of an elderly man who presented with bilateral popliteal artery pseudoaneurysms in the setting of HME at age 81...
July 8, 2017: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/28818736/co-option-of-endogenous-viral-sequences-for-host-cell-function
#10
REVIEW
John A Frank, Cédric Feschotte
Eukaryotic genomes are littered with sequences of diverse viral origins, termed endogenous viral elements (EVEs). Here we used examples primarily drawn from mammalian endogenous retroviruses to document how the influx of EVEs has provided a source of prefabricated coding and regulatory sequences that were formerly utilized for viral infection and replication, but have been occasionally repurposed for cellular function. While EVE co-option has benefited a variety of host biological functions, there appears to be a disproportionate contribution to immunity and antiviral defense...
August 14, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28818353/does-calcium-burden-impact-culprit-lesion-morphology-and-clinical-results-an-adapt-des-ivus-substudy
#11
Peiren Shan, Gary S Mintz, Bernhard Witzenbichler, D Christopher Metzger, Michael J Rinaldi, Peter L Duffy, Giora Weisz, Thomas D Stuckey, Bruce R Brodie, Philippe Généreux, Aaron Crowley, Ajay J Kirtane, Gregg W Stone, Akiko Maehara
BACKGROUND: Increasing coronary lesion calcification is thought to be associated with adverse percutaneous coronary intervention (PCI) and clinical outcomes. We investigated the effects of calcium burden on culprit lesion morphology and clinical events after intravascular ultrasound (IVUS)-guided PCI in the ADAPT-DES study. METHODS: ADAPT-DES was a prospective, multicenter registry of 8582 consecutive patients undergoing successful PCI using DES. A pre-specified virtual histology (VH)-IVUS substudy of 638 culprit lesions (638 patients) had both pre- and post-PCI VH-IVUS...
August 12, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28818010/translation-and-adaptation-of-a-nursing-swearing-impact-questionnaire-into-chinese
#12
Yan Sun, Teresa E Stone, Bingxiang Yang, Marcia A Petrini, Margaret McMillan
BACKGROUND: Verbal aggression and swearing are the most frequently encountered violence in the health care industry. Nurses are the most frequent victims. Not known is the incidence and impact of swearing against nurses in China. OBJECTIVES: (a) Develop a Chinese version of the Nursing Swearing Impact Questionnaire; (b) report the preliminary findings from the use of the tool. METHOD: Using a translation-back translation procedure, focus groups and expert review, followed by a survey of 32 participants...
August 1, 2017: Journal of the American Psychiatric Nurses Association
https://www.readbyqxmd.com/read/28817950/editorial-comment-on-end-2017-0350-or-r1
#13
Kristina L Penniston
Risk factors for coronary artery disease are relatively common among patients with urolithiasis. Increased risk of myocardial infarction and carotid atherosclerosis in young adults have been noted. The authors of this article on vascular disease and kidney stones make the case for using routine imaging studies to screen for patients with cardiovascular risk factors.
August 17, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28817904/re-uric-acid-versus-non-uric-acid-renal-stones-in%C3%A2-vivo-differentiation-with-spectral-ct
#14
Dean G Assimos
No abstract text is available yet for this article.
September 2017: Journal of Urology
https://www.readbyqxmd.com/read/28817728/evaluation-of-reference-genes-for-reverse-transcription-quantitative-real-time-pcr-rt-qpcr-studies-in-silene-vulgaris-considering-the-method-of-cdna-preparation
#15
Pavla Koloušková, James D Stone, Helena Štorchová
Accurate gene expression measurements are essential in studies of both crop and wild plants. Reverse transcription quantitative real-time PCR (RT-qPCR) has become a preferred tool for gene expression estimation. A selection of suitable reference genes for the normalization of transcript levels is an essential prerequisite of accurate RT-qPCR results. We evaluated the expression stability of eight candidate reference genes across roots, leaves, flower buds and pollen of Silene vulgaris (bladder campion), a model plant for the study of gynodioecy...
2017: PloS One
https://www.readbyqxmd.com/read/28816531/prevalence-and-predictors-of-primary-hyperparathyroidism-amongpatients-with-urolithiasis
#16
S Sharma, A Rastogi, S K Bhadada, P Singh, S Varshney, A Behera, A Bhansali, S K Singh, D S Rao
BACKGROUND: Urolithiasis may be the only presenting manifestation of primary hyperparathyroidism (PHPT), and early detection of PHPT in such patients may prevent future urolithiasis and other PHPT complications. OBJECTIVES: To study the prevalence and predictors of PHPT in patients presenting with urolithiasis. SUBJECTS & METHODS: Consecutive patients presenting with urolithiasis were evaluated for clinical and biochemical manifestations of PHPT with serum and urine calcium, serum intact parathyroid hormone and 25 (OH) vitamin D...
August 17, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28816298/-multiple-endoscopy-for-the-treatment-of-upper-urinary-tract-calculi-following-ileal-conduit-a-case-report-and-literature-review
#17
B Wang, J F Ye, L Zhao, H Bi, J Lu, L L Ma
Upper urinary tract calculi with infection is a quite difficult acute urologic emergency. And what is more, upper urinary tract obstruction after radical cystectomy following urinary diversion may be fatal in the vulnerable patients with this kind of situation. Postoperative anatomy and other factors affect the upper urinary tract calculi, and urinary tract infection greatly increased the risk. But it is particularly difficult to handle with patients with poor general condition and septic shock treatment, so how to optimize the selection program is worth further studying...
August 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28816278/-analysis-of-development-safety-and-efficacy-of-percutaneous-nephrolithotomy-for-management-of-upper-urinary-tract-calculi-in-pediatric-patients
#18
L P Yu, T Xu
OBJECTIVE: To evaluate the development, safety and efficacy of percutaneous nephrolithotomy(PNL) for management of upper urinary tract calculi in pediatric patients. METHODS: In the study, 77 pediatric patients undergoing 87 PNLs through mini or standard tract for upper urinary tract calculi between January 2005 and December 2016 in Peking University People's hospital were reviewed, including 69 renal calculi, 6 upper ureteral calculi, 12 renal and upper ureteral calculi, 35 single calculi, 43 multiple calculi and 9 staghorn calculi...
August 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28816277/-characteristics-of-ureteral-stone-position-and-dilatation-of-ureter-in-patients-before-treated-with-endourologic-lithotripsy
#19
H Y Ye, Q Q Xu, K Ma, X B Huang
OBJECTIVE: To investigate the position and the size of ureteral stone in patients before treated with ureteroscopic lithotripsy or percutaneous nephrolithotomy (PCNL), as well as the dilatation of ureter caused by stone, which may be helpful for better understanding of pathogenesis of ureteral stone and improvement of the diagnosis and treatment in clinic. METHODS: A total of 129 cases with ureteral stone for endourologic lithotripsy in Peking University People's Hospital from Aug...
August 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28814852/prognostic-variables-and-scores-identifying-the-end-of-life-in-copd-a-systematic-review
#20
REVIEW
Laura-Jane E Smith, Elizabeth Moore, Ifrah Ali, Liam Smeeth, Patrick Stone, Jennifer K Quint
INTRODUCTION: COPD is a major cause of mortality, and the unpredictable trajectory of the disease can bring challenges to end-of-life care. We aimed to investigate known prognostic variables and scores that predict prognosis in COPD in a systematic literature review, specifically including variables that contribute to risk assessment of patients for death within 12 months. METHODS: We conducted a systematic review on prognostic variables, multivariate score or models for COPD...
2017: International Journal of Chronic Obstructive Pulmonary Disease
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