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https://www.readbyqxmd.com/read/28213924/diagnostic-paradox-ruptured-aneurysm-of-sinus-of-valsalva-simulating-tricuspid-valve-endocarditis
#1
Mehar Hoda, Arushi Verma, Sridevi Alapati, Srilatha Alapati, Tharakanatha R Yarrabolu
Rupture of aneurysm of sinus of Valsalva into the right atrium mimicking tricuspid valve endocarditis is a rare presentation. We review a case of spontaneous rupture of aneurysm of sinus of Valsalva into the right atrium presenting as a murmur. Transthoracic echocardiogram showed a mobile mass that appeared to be attached to the tricuspid valve leaflet with moderate tricuspid regurgitation suggestive of tricuspid valve endocarditis. The diagnosis was confirmed as spontaneous rupture of noncoronary sinus in to the right atrium by transesophageal echocardiogram...
February 18, 2017: Echocardiography
https://www.readbyqxmd.com/read/28213770/myosin-heavy-chain-and-cardiac-troponin-t-damage-is-associated-with-impaired-myofibrillar-atpase-activity-contributing-to-sarcomeric-dysfunction-in-ca-2-paradox-rat-hearts
#2
Árpád Kovács, Judit Kalász, Enikő T Pásztor, Attila Tóth, Zoltán Papp, Naranjan S Dhalla, Judit Barta
This study aimed to explore the potential contribution of myofibrils to contractile dysfunction in Ca(2+)-paradox hearts. Isolated rat hearts were perfused with Krebs-Henseleit solution (Control), followed by Ca(2+)-depletion, and then Ca(2+)-repletion after Ca(2+)-depletion (Ca(2+)-paradox) by Langendorff method. During heart perfusion left ventricular developed pressure (LVDP), end-diastolic pressure (LVEDP), rate of pressure development (+ dP/dt), and pressure decay (-dP/dt) were registered. Control LVDP (127...
February 17, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28213513/runx1-cooperates-with-flt3-itd-to-induce-leukemia
#3
Kira Behrens, Katrin Maul, Nilgün Tekin, Neele Kriebitzsch, Daniela Indenbirken, Vladimir Prassolov, Ursula Müller, Hubert Serve, Jörg Cammenga, Carol Stocking
Acute myeloid leukemia (AML) is induced by the cooperative action of deregulated genes that perturb self-renewal, proliferation, and differentiation. Internal tandem duplications (ITDs) in the FLT3 receptor tyrosine kinase are common mutations in AML, confer poor prognosis, and stimulate myeloproliferation. AML patient samples with FLT3-ITD express high levels of RUNX1, a transcription factor with known tumor-suppressor function. In this study, to understand this paradox, we investigated the impact of RUNX1 and FLT3-ITD coexpression...
February 17, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28213391/the-politics-and-policies-of-regulating-generics-in-latin-america-a-survey-of-seventeen-states
#4
Cassandra M Sweet
When patents expire, are equivalent generic alternatives available to citizens? This article contributes to current discussion on access to medicine in the aftermath of the World Trade Organization's Agreement on Trade-Related Aspects of Intellectual Property Rights (TRIPS). The focus is on off-patent or "generic" medicines: their product definitions, quality standards and prescription procedures. Drawing from a survey conducted of seventeen countries across the Latin American region, this article examines the differences in definition of off-patent products and the paradox of their relatively lower consumption across multiple developing states...
February 17, 2017: Journal of Health Politics, Policy and Law
https://www.readbyqxmd.com/read/28213000/obesity-is-associated-with-long-term-improved-survival-in-definitively-treated-locally-advanced-non-small-cell-lung-cancer-nsclc
#5
Vincent K Lam, Søren M Bentzen, Pranshu Mohindra, Elizabeth M Nichols, Neha Bhooshan, Melissa Vyfhuis, Katherine A Scilla, Steven J Feigenberg, Martin J Edelman, Josephine L Feliciano
OBJECTIVES: To determine the prognostic effect of Body Mass Index (BMI) in definitively treated locally advanced NSCLC patients. MATERIALS AND METHODS: In this single institution retrospective cohort study, we evaluated 291 patients who were treated for locally advanced NSCLC from 2000 to 2010. They were stratified into four BMI groups based on World Health Organization criteria: underweight (<18.5kg/m2), normal weight (18.5 to <25kg/m2), overweight (25 to <30kg/m2), and obese (≧30kg/m2)...
February 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28212600/persistence-of-social-inequalities-in-modern-welfare-states-explanation-of-a-paradox
#6
Johan P Mackenbach
AIMS: Social-epidemiological explanations of health inequalities usually take the existence of social inequality as a given and ignore the fundamental questions of why social inequality exists in the first place and why it is so persistent. I review here theories of the explanation of social inequality to identify the processes and/or structures responsible for its persistence. METHODS: This paper is a review of the relevant sociological literature. RESULTS: The sociological literature suggests that what persists over long periods of time is not a specific manifestation of social inequality but a 'meta-phenomenon': the fact that there are different social positions, that these social positions give access to different levels of resources in some graded way and that the distribution of individuals over social positions follows rules that create inequalities in the opportunities for achieving a more advantaged social position...
March 2017: Scandinavian Journal of Public Health
https://www.readbyqxmd.com/read/28211871/expression-level-is-a-key-determinant-of-e2f1-mediated-cell-fate
#7
Igor Shats, Michael Deng, Adam Davidovich, Carolyn Zhang, Jungeun S Kwon, Dinesh Manandhar, Raluca Gordân, Guang Yao, Lingchong You
The Rb/E2F network has a critical role in regulating cell cycle progression and cell fate decisions. It is dysfunctional in virtually all human cancers, because of genetic lesions that cause overexpression of activators, inactivation of repressors, or both. Paradoxically, the downstream target of this network, E2F1, is rarely strongly overexpressed in cancer. E2F1 can induce both proliferation and apoptosis but the factors governing these critical cell fate decisions remain unclear. Previous studies have focused on qualitative mechanisms such as differential cofactors, posttranslational modification or state of other signaling pathways as modifiers of the cell fate decisions downstream of E2F1 activation...
February 17, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28211161/psoriasis-and-psoriasiform-eruptions-in-pediatric-patients-with-inflammatory-bowel-disease-treated-with-anti-tumor-necrosis-factor-alpha-agents
#8
Joshua B Eickstaedt, Luke Killpack, Jeanne Tung, Dawn Davis, Jennifer L Hand, Megha M Tollefson
BACKGROUND: Anti-tumor necrosis factor alpha (TNF-α) agents are used to treat a variety of autoimmune and inflammatory conditions, including psoriasis. Paradoxically, numerous reports have documented new-onset or exacerbation of psoriasis or psoriasiform skin lesions (PSO) in patients treated with these agents for conditions other than PSO-particularly in adults with inflammatory bowel disease (IBD). Not much is known regarding similar cases in children. METHODS: A retrospective chart review was performed on children younger than 19 years of age with IBD seen at the Mayo Clinic between 2003 and 2015 who developed new-onset or recurrent PSO while undergoing anti-TNF-α therapy...
February 17, 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/28209971/obesity-paradox-in-group-1-pulmonary-hypertension-analysis-of-the-nih-pulmonary-hypertension-registry
#9
S Mazimba, E Holland, V Nagarajan, A D Mihalek, J L W Kennedy, K C Bilchick
BACKGROUND: The 'obesity paradox' refers to the fact that obese patients have better outcomes than normal weight patients. This has been observed in multiple cardiovascular conditions, but evidence for obesity paradox in pulmonary hypertension (PH) remains sparse. METHODS: We categorized 267 patients from the NIH PH Registry into five groups based on BMI: underweight, normal weight, overweight, obese, and morbidly obese. Mortality was compared in BMI groups using the chi square statistic...
February 17, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28209733/dual-function-of-tgf%C3%AE-in-lens-epithelial-cell-fate-implications-for-secondary-cataract
#10
Bruce A Boswell, Anna Korol, Judith A West-Mays, Linda S Musil
The most common vision-disrupting complication of cataract surgery is posterior capsule opacification (PCO; secondary cataract). PCO is caused by residual lens cells undergoing one of two very different cell fates: either transdifferentiating into myofibroblasts, or maturing into lens fiber cells. Although TGFβ has been strongly implicated in lens cell fibrosis, the factors responsible for the latter process have not been identified. We show here for the first time that TGFβ can induce purified primary lens epithelial cells within the same culture to undergo differentiation into either lens fiber cells or myofibroblasts...
February 16, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28209523/tb-iris-proteomic-analysis-of-in-vitro-pbmc-responses-to-mycobacterium-tuberculosis-and-response-modulation-by-dexamethasone
#11
Liam Bell, Janique M Peyper, Shaun Garnett, Rabecca Tadokera, Robert Wilkinson, Graeme Meintjes, Jonathan M Blackburn
Paradoxical tuberculosis-associated immune reconstitution inflammatory syndrome (TB-IRIS) occurs in 8-54% of South African patients undergoing treatment for tuberculosis/human immunodeficiency virus co-infection. Improved TB-IRIS molecular pathogenesis understanding would enhance risk stratification, diagnosis, prognostication, and treatment. We assessed how TB-IRIS status and dexamethasone influence leukocyte proteomic responses to Mycobacterium tuberculosis (Mtb). Patient blood was obtained three weeks post-anti-retroviral therapy initiation...
February 13, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28209310/paradoxical-ventriculomegaly-due-to-low-pressure-hydrocephalus-a-rare-complication-of-the-treatment-of-a-trapped-fourth-ventricle-case-report
#12
Neelan J Marianayagam, Netanel Ben Shalom, Saeed Yassin, Shalom Michowiz, Sagi Harnof, Gustavo Rajz
In this paper, we describe the rare phenomena of descending transtentorial herniation and paradoxical ventriculomegaly due to low pressure hydrocephalus. This resulted as a complication of treatment in a 14year old male patient, who had undergone multiple ventriculo-peritoneal shunt placements for hydrocephalus after resection of pilocytic astrocytoma. We discuss the etiology of this rare complication and our strategy for treatment. We emphasize the need for strategic placement of programmable shunts to avoid over shunting and associated complications such as tentorial herniation...
February 10, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28209213/invited-review-relationship-between-cattle-transport-immunity-and-respiratory-disease
#13
B Earley, K Buckham Sporer, S Gupta
The association between transportation and the occurrence of the bovine respiratory disease complex (BRDC) has long been recognised. Many hypotheses regarding this association have been declared through the past decades, and it is agreed upon by most researchers that the multiple stressors that calves experience during transportation result in an overall immunosuppression that allows the respiratory tract to be invaded by numerous opportunistic pathogens. Furthermore, the innate immune cells, neutrophils, may be trapped in a paradox whereby their crucial defence and pathogen-killing activities are counteracted by excessive inflammation and tissue damage that may exacerbate disease, including the BRDC...
March 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28208419/einstein-podolsky-rosen-paradox-implies-a-minimum-achievable-temperature
#14
David M Rogers
This work examines the thermodynamic consequences of the repeated partial projection model for coupling a quantum system to an arbitrary series of environments under feedback control. This paper provides observational definitions of heat and work that can be realized in current laboratory setups. In contrast to other definitions, it uses only properties of the environment and the measurement outcomes, avoiding references to the "measurement" of the central system's state in any basis. These definitions are consistent with the usual laws of thermodynamics at all temperatures, while never requiring complete projective measurement of the entire system...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28207196/paradoxically-speaking-about-engagement-in-pediatric-weight-management
#15
A J Perez, G D C Ball
No abstract text is available yet for this article.
February 16, 2017: Pediatric Obesity
https://www.readbyqxmd.com/read/28205081/-%C3%A2-ne-nous-engageons-point-dans-les-querelles-%C3%A2-a-project-for-never-ending-war
#16
Kate E Tunstall
This article considers the extent to which a quarrel might be a strategic activity for a writer or philosopher making a bid for posterity. Inveterate quarrellers like Voltaire or Rousseau come to mind, but the case to be examined here is the far less straightforward case of Diderot and in particular the stance of 'accidental quarreller' that he fabricates in his Essai sur les règnes de Claude et de Néron et sur les moeurs et les écrits de Sénèque pour servir à l'introduction de la lecture de ce philosophe (1782), the last work he published in his lifetime...
December 2016: Revue de Synthèse
https://www.readbyqxmd.com/read/28204798/paradoxical-effects-of-perceived-control-on-survival
#17
Judith G Chipperfield, Raymond P Perry, Reinhard Pekrun, Jeremy M Hamm, Frieder R Lang
No abstract text is available yet for this article.
February 14, 2017: Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
https://www.readbyqxmd.com/read/28204192/ventricular-septal-defect-an-unusual-cause-of-paradoxical-low-gradient-aortic-stenosis
#18
Quentin de Hemptinne, Benjamin De Becker, Philippe Unger
No abstract text is available yet for this article.
February 14, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28203691/cigarette-smoking-and-subtypes-of-uncontrolled-blood-pressure-among-diagnosed-hypertensive-patients-paradoxical-associations-and-implications
#19
Xuefeng Liu, James Brian Byrd
No abstract text is available yet for this article.
February 13, 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/28203575/ebstein-anomaly-with-qrs-fragmentation-on-electrocardiogram
#20
Prakash Acharya, Jonathan Ross Ang, Bernard Gitler
Ebstein anomaly is a rare congenital disorder that involves the tricuspid valve and the right ventricle. It is associated with interatrial communication, which allows for paradoxical embolization causing unilateral blindness. Abnormal conduction through the atrialized right ventricle leads to QRS fragmentation on electrocardiogram. Its presence suggests a more severe abnormality and a higher risk of arrhythmia. The QRS fragmentation disappears after corrective surgery with resection of the atrialized right ventricle...
January 2017: Journal of Investigative Medicine High Impact Case Reports
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