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Causation in medicine

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https://www.readbyqxmd.com/read/28092685/precision-oncology-for-acute-myeloid-leukemia-using-a-knowledge-bank-approach
#1
Moritz Gerstung, Elli Papaemmanuil, Inigo Martincorena, Lars Bullinger, Verena I Gaidzik, Peter Paschka, Michael Heuser, Felicitas Thol, Niccolo Bolli, Peter Ganly, Arnold Ganser, Ultan McDermott, Konstanze Döhner, Richard F Schlenk, Hartmut Döhner, Peter J Campbell
Underpinning the vision of precision medicine is the concept that causative mutations in a patient's cancer drive its biology and, by extension, its clinical features and treatment response. However, considerable between-patient heterogeneity in driver mutations complicates evidence-based personalization of cancer care. Here, by reanalyzing data from 1,540 patients with acute myeloid leukemia (AML), we explore how large knowledge banks of matched genomic-clinical data can support clinical decision-making. Inclusive, multistage statistical models accurately predicted likelihoods of remission, relapse and mortality, which were validated using data from independent patients in The Cancer Genome Atlas...
January 16, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28091407/clinical-characteristics-of-patients-with-drug-induced-liver-injury
#2
Li-Xia Yang, Cheng-Yuan Liu, Lun-Li Zhang, Ling-Ling Lai, Ming Fang, Chong Zhang
BACKGROUND: Drug is an important cause of liver injury and accounts for up to 40% of instances of fulminant hepatic failure. Drug-induced liver injury (DILI) is increasing while the diagnosis becomes more difficult. Though many drugs may cause DILI, Chinese herbal medicines have recently emerged as a major cause due to their extensive use in China. We aimed to provide drug safety information to patients and health carers by analyzing the clinical and pathological characteristics of the DILI and the associated drug types...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28059928/clozapine-usage-increases-the-incidence-of-pneumonia-compared-with-risperidone-and-the-general-population-a-retrospective-comparison-of-clozapine-risperidone-and-the-general-population-in-a-single-hospital-over-25-months
#3
Zachary R Stoecker, Wales T George, Jeffrey B O'Brien, Jon Jancik, Eduardo Colon, Joseph J Rasimas
The aim of this study was to determine whether the incidence of pneumonia in patients taking clozapine was more frequent compared with those taking risperidone or no atypical antipsychotics at all before admission to a tertiary care medical center. This was a retrospective, case-matched study of 465 general medicine patients over a 25 month period from 1 July 2010 to 31 July 2012. Detailed electronic medical records were analyzed to explore the association between the use of two atypical antipsychotics and incidence of pneumonia...
January 4, 2017: International Clinical Psychopharmacology
https://www.readbyqxmd.com/read/28043490/antimycobacterial-activity-of-medicinal-plants-against-the-causative-agent-of-buruli-ulcer-mycobacterium-ulcerans
#4
R Keumoe, M S Nguembou, F P V Tsouh, D V F Donkeng, D Dize, Y L R Tchokouaha, M C D Jiatsa, F R D Youmsi, B Ngameni, B F Fekam
OBJECTIVE/BACKGROUND: Buruli ulcer, known as necrotizing skin disease caused by Mycobacterium ulcerans, has emerged as the most prevalent mycobacteriosis after leprosy and tuberculosis. Accordingly, it has been classified by the World Health Organization as a neglected disease with high significance in tropical areas, including Cameroon. So far, the control of the disease relies mainly on the rifampin-streptomycin combination. Despite its efficiency, it has shown considerable issues, including availability and side effects...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28036233/shared-and-distinct-aspects-of-the-sepsis-transcriptomic-response-to-fecal-peritonitis-and-pneumonia
#5
Katie L Burnham, Emma E Davenport, Jayachandran Radhakrishnan, Peter Humburg, Anthony C Gordon, Paula Hutton, Eduardo Svoren-Jabalera, Christopher Garrard, Adrian Vs Hill, Charles J Hinds, Julian C Knight
RATIONALE: Heterogeneity in the septic response has hindered efforts to understand pathophysiology and develop targeted therapies. Source of infection, with different causative organisms and temporal changes, might influence this heterogeneity. OBJECTIVES: To investigate individual and temporal variation in the transcriptomic response to sepsis due to fecal peritonitis, and to compare with community acquired pneumonia. METHODS: We performed genome-wide gene expression profiling in peripheral blood leukocytes for adult patients admitted to intensive care with sepsis due to fecal peritonitis (n=117) or community acquired pneumonia (n=126), and non-septic controls (n=10)...
December 30, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27993012/rational-design-of-small-molecules-targeting-oncogenic-noncoding-rnas-from-sequence
#6
Matthew D Disney, Alicia J Angelbello
The discovery of RNA catalysis in the 1980s and the dissemination of the human genome sequence at the start of this century inspired investigations of the regulatory roles of noncoding RNAs in biology. In fact, the Encyclopedia of DNA Elements (ENCODE) project has shown that only 1-2% of the human genome encodes protein, yet 75% is transcribed into RNA. Functional studies both preceding and following the ENCODE project have shown that these noncoding RNAs have important roles in regulating gene expression, developmental timing, and other critical functions...
December 20, 2016: Accounts of Chemical Research
https://www.readbyqxmd.com/read/27992217/urea-derivatives-of-2-aryl-benzothiazol-5-amines-a-new-class-of-potential-drugs-for-human-african-trypanosomiasis
#7
Donald A Patrick, J Robert Gillespie, Joshua McQueen, Matthew A Hulverson, Ranae M Ranade, Sharon A Creason, Zackary M Herbst, Michael H Gelb, Frederick S Buckner, Richard R Tidwell
A previous publication from this lab (Patrick, et al. Bioorg. Med. Chem. 2016, 24 , 2451 - 2465 ) explored the antitrypanosomal activities of novel derivatives of 2-(2-benzamido)ethyl-4-phenylthiazole (1), which had been identified as a hit against Trypanosoma brucei, the causative agent of human African trypanosomiasis. While a number of these compounds, particularly the urea analogues, were quite potent, these molecules as a whole exhibited poor metabolic stability. The present work describes the synthesis of 65 new analogues arising from medicinal chemistry optimization at different sites on the molecule...
December 19, 2016: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27976538/cryopreservation-and-hypothermic-storage-of-lacrimal-gland-towards-enabling-delivery-of-regenerative-medicine-therapies-for-treatment-of-dry-eye-syndrome
#8
I Massie, K Spaniol, G Geerling, S Schrader
Severe dry eye syndrome (DES) can cause painful loss of vision and may result from lacrimal gland dysfunction. Current treatments are palliative, so a causative therapy is desirable. The ability to (cryo)preserve lacrimal gland tissue or epithelial cells would simplify this. Here, lacrimal gland tissue was cryopreserved in 10% dimethylsulphoxide in liquid nitrogen, or stored at 4 °C in culture medium for up to 7 days, and compared with fresh tissue using immunohistochemistry. Cultures were initiated from fresh and stored tissue, and cells characterised in P1 for proliferation (WST-1), colony-forming efficiency (CFE) and secretory capacity (immunocytochemistry and β-hexosaminidase activity assay)...
December 14, 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27939314/17-th-century-variola-virus-reveals-the-recent-history-of-smallpox
#9
Ana T Duggan, Maria F Perdomo, Dario Piombino-Mascali, Stephanie Marciniak, Debi Poinar, Matthew V Emery, Jan P Buchmann, Sebastian Duchêne, Rimantas Jankauskas, Margaret Humphreys, G Brian Golding, John Southon, Alison Devault, Jean-Marie Rouillard, Jason W Sahl, Olivier Dutour, Klaus Hedman, Antti Sajantila, Geoffrey L Smith, Edward C Holmes, Hendrik N Poinar
Smallpox holds a unique position in the history of medicine. It was the first disease for which a vaccine was developed and remains the only human disease eradicated by vaccination. Although there have been claims of smallpox in Egypt, India, and China dating back millennia [1-4], the timescale of emergence of the causative agent, variola virus (VARV), and how it evolved in the context of increasingly widespread immunization, have proven controversial [4-9]. In particular, some molecular-clock-based studies have suggested that key events in VARV evolution only occurred during the last two centuries [4-6] and hence in apparent conflict with anecdotal historical reports, although it is difficult to distinguish smallpox from other pustular rashes by description alone...
December 19, 2016: Current Biology: CB
https://www.readbyqxmd.com/read/27905924/current-knowledge-and-perspectives-of-paenibacillus-a-review
#10
REVIEW
Elliot Nicholas Grady, Jacqueline MacDonald, Linda Liu, Alex Richman, Ze-Chun Yuan
Isolated from a wide range of sources, the genus Paenibacillus comprises bacterial species relevant to humans, animals, plants, and the environment. Many Paenibacillus species can promote crop growth directly via biological nitrogen fixation, phosphate solubilization, production of the phytohormone indole-3-acetic acid (IAA), and release of siderophores that enable iron acquisition. They can also offer protection against insect herbivores and phytopathogens, including bacteria, fungi, nematodes, and viruses...
December 1, 2016: Microbial Cell Factories
https://www.readbyqxmd.com/read/27890107/an-analysis-of-causative-factors-in-closed-criminal-medical-malpractice-cases-of-the-taiwan-supreme-court-2000-2014
#11
Kuan-Han Wu, Shih-Yu Cheng, Yung-Lin Yen, Chien-Hung Wu, Ming-Ta Tsai, Fu-Jen Cheng
Most medical malpractice in Taiwan leads to criminal prosecution. This study examined the epidemiologic factors and clinical errors that led to medical malpractice convictions in Taiwanese criminal prosecutions. A retrospective, 15-year population-based review of criminal Supreme Court judgments pertaining to medical malpractice against physicians and nurses was conducted. Eighty-four cases were reviewed, yielding data that included the number and specialty involved, accused hospitals, the diagnosis, the time interval between incidents to closure, result of adjudication, the origin of cases (private vs...
November 2016: Legal Medicine
https://www.readbyqxmd.com/read/27879182/-acute-respiratory-failure-caused-by-minocycline
#12
B Kok, M J T van de Ven, H J van Leeuwen
BACKGROUND: In the case of pneumonia an infectious cause is always considered first. However, toxic agents and medicines can also be the cause of pneumonia. CASE DESCRIPTION: A 54-year-old woman was referred to the emergency department because of progressive dyspnoea, a non-productive cough, headache, and fever. She was admitted with the diagnosis community acquired pneumonia. Despite treatment with antibiotics and oxygen she developed hypoxic respiratory failure, which necessitated invasive mechanical ventilation...
2016: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/27876128/can-subphysiological-cold-application-be-utilized-in-excessive-dermal-scarring-prophylaxis-and-treatment-a-promising-hypothetical-perspective
#13
Çağlayan Yağmur, Murat Sinan Engin, Rei Ogawa
Excessive dermal scarring (EDS) is a wound healing complication, characterized by protruded erythematous and inelastic 'proliferative scar tissue' which is associated with increased and prolonged inflammation process within the wound microenvironment. As inflammation plays a key role in this process, methods to contain or attenuate excessive inflammation hold promise in treatment and prophylaxis of EDS conditions. While cold exposure is notorious as the causative agent a wide array of morbidities and fatalities, its tempered use is exploited in medicine for ablative and therapeutic applications...
December 2016: Medical Hypotheses
https://www.readbyqxmd.com/read/27871350/early-description-of-diet-induced-blistering-skin-diseases-in-medieval-persia-avicenna-s-point-of-view
#14
Fatemeh Atarzadeh, Babak Daneshfard, Ladan Dastgheib, Amir-Mohammad Jaladat, Gholamreza Amin
Pemphigus is an autoimmune blistering skin disease that is strongly associated with different environmental factors. Among these, nutritional factors are considered to trigger pemphigus; however, their role may be underestimated. Investigated more recently in conventional medicine, this causative bond between dietary factors and blistering skin diseases was mentioned by Persian scholars such as Avicenna a thousand years ago. Avicenna, a well-known Persian physician and philosopher, who could be considered a pioneer in dermatology, discussed skin diseases in a chapter in The Canon of Medicine...
2016: Skinmed
https://www.readbyqxmd.com/read/27871282/a-mother-s-choice-a-qualitative-study-of-mothers-health-seeking-behaviour-for-their-children-with-acute-diarrhoea
#15
Lucy Cunnama, Ayako Honda
BACKGROUND: Diarrhoea presents a considerable health risk to young children and is one of the leading causes of infant mortality. Although proven cost-effective interventions exist, South Africa is yet to reach the Sustainable Development Goals set for the elimination of preventable under-five mortality and water-borne diseases. The rural study area in the Eastern Cape of South Africa continues to have a parallel health system comprising traditional and modern healthcare services. It is in this setting that this study aimed to qualitatively examine the beliefs surrounding and perceived quality of healthcare accessed for children's acute diarrhoea...
November 21, 2016: BMC Health Services Research
https://www.readbyqxmd.com/read/27854302/severe-cutaneous-adverse-reactions-the-pharmacogenomics-from-research-to-clinical-implementation
#16
REVIEW
Shih-Chi Su, Shuen-Iu Hung, Wen-Lang Fan, Ro-Lan Dao, Wen-Hung Chung
Severe cutaneous adverse reactions (SCARs), previously thought to be idiosyncratic or unpredictable, are a deadly form of adverse drug reactions with skin manifestations. Current pharmacogenomic studies of SCARs have made important strides, as the prevention of SCARs, to some extent, appears attainable with the identification of genetic variants for genes encoding drug-metabolizing enzymes and human leukocyte antigens (HLAs). Despite the improvement of incidence, a treatment guideline for this devastating condition is still unavailable, highlighting the inadequacy of contemporary accepted therapeutic interventions...
November 15, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27795383/screening-the-pathogen-box-for-identification-of-candida-albicans-biofilm-inhibitors
#17
Taissa Vila, Jose L Lopez-Ribot
Candida albicans remains the main causative agent of candidiasis, one of the most frequent nosocomial infections, with unacceptably high mortality rates. Biofilm formation is a major risk factor for invasive candidiasis, as Candida biofilms display high-level resistance to most antifungal agents. In this work we have screened the Pathogen Box chemical library (Medicines for Malaria Venture [MMV], Switzerland) in search for inhibitors of C. albicans biofilm formation. Our initial screen identified seven hits, and additional dose-response assays confirmed the biofilm-inhibitory activity of six of these small molecules...
January 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27788041/fetal-dysmorphology-still-an-essential-art-analysis-of-the-limitations-of-microarray-in-a-fetal-population-and-a-look-toward-the-genome-sequencing-era
#18
Elaine Fletcher, Mary Porteous, Eddy Maher, Kathryn J McKenzie, Margaret J Evans
Cytogenomic microarray allows assessment of the genome at higher resolutions than traditional karyotyping. The objective of this study is to evaluate the utility of microarray in a routine fetal autopsy setting before the advent of routine fetal exome / genome sequencing and the issues these technologies may generate. A systematic review of fetal post mortems performed between Jan 2011 - Dec 2014 was undertaken. Cases where there was no consent for audit, research or genetic testing were excluded as were cases referred to the Procurator Fiscal, stillbirths and neonatal deaths...
October 27, 2016: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/27787487/minimally-invasive-spine-surgery-in-spinal-infections-an-up-date
#19
Francisco Verdú López, Vicente Vanaclocha Vanaclocha, Juan D Mayorga-Villa
Although spinal infections have always been present recently their incidence has increased, in partly fostered by the advances in medicine (i.e. compromised 10 immunity, chronic diseases, increasingly complex spinal procedures...) and increased life expectancy. Using PubMed for this systematic review, the main spine infections types will be addressed focusing in the minimally invasive surgical techniques that can be used in their treatment. Spontaneous and iatrogenic pyogenic and non-pyogenic spine infections can be treated in many different ways depending on their extension and 15 location as well as on their causative microorganisms...
October 27, 2016: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/27754286/br-07-1-development-of-the-cell-microarray-for-high-throughput-analysis-of-gut-microbiota
#20
Seong-Tshool Hong
The human intestine contains a massive and complex microbial community called gut microbiota. A typical human carries 100 trillion microbes in his/her body which is 10 times greater than the number of their host cells, i.e. whole number of human cells. A combined microbial genome constituting gut microbiota is well excess our own human genome. The microbial composition of gut microbiotata and its role on diseases became a booming area of research, presenting a new paradigm of opportunities for modern medicines...
September 2016: Journal of Hypertension
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