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Mehdi Ranjbaran, Faeze Mohammadshahi, Sorour Mani, Mahmood Karimy
Background: Tendency toward addiction is provided before drug use begins. The present study aimed to identify the risk factors for addiction potential in the students of Arak University of Medical Sciences. Methods: We conducted this cross-sectional study among 305 students from Arak University of Medical Sciences, Iran in 2016. We selected the students by stratified random sampling and collected the data by family and sociodemographic factors questionnaires and Addiction Potential Scale...
2018: International Journal of Preventive Medicine
Paolo Miotto, Andrea M Cabibbe, Emanuele Borroni, Massimo Degano, Daniela M Cirillo
Low-level rifampicin resistance associated with specific rpoB mutations (referred as "disputed") in Mycobacterium tuberculosis is easily missed by some phenotypic methods. To understand the mechanism by which some mutations are systematically missed by MGIT phenotypic testing we performed an in silico analysis of their effect on the structural interaction between the RpoB protein and rifampicin. We also characterized 24 representative clinical isolates by determining minimum inhibitory concentrations (MICs) on 7H10 agar, and testing them by an extended MGIT protocol...
March 14, 2018: Journal of Clinical Microbiology
Mark N Belkin, Cesar E Soria, Albert L Waldo, C Jan Willem Borleffs, David L Hayes, Roderick Tung, Jagmeet P Singh, Gaurav A Upadhyay
BACKGROUND: Despite the clear association between atrial fibrillation and risk for thromboembolic events (TEs), the clinical significance of new-onset device-detected atrial tachyarrhythmia (DDAT) and TE remains disputed. We aimed to determine the risk of TE in patients with new-onset DDAT. METHODS AND RESULTS: The OVID Medline, Cochrane, and Scopus databases (inception to November 2016) were searched. Randomized controlled trials, prospective, or retrospective studies of pacemaker or defibrillator patients reporting incidence of DDAT were selected...
March 2018: Circulation. Arrhythmia and Electrophysiology
Ilaria Cavallari, Christopher P Cannon, Eugene Braunwald, Erica L Goodrich, KyungAh Im, Mary Ann Lukas, Michelle L O'Donoghue
Background The incremental prognostic value of assessing the metabolic syndrome has been disputed. Little is known regarding its prognostic value in patients after an acute coronary syndrome. Design and methods The presence of metabolic syndrome (2005 International Diabetes Federation) was assessed at baseline in SOLID-TIMI 52, a trial of patients within 30 days of acute coronary syndrome (median follow-up 2.5 years). The primary endpoint was major coronary events (coronary heart disease death, myocardial infarction or urgent coronary revascularization)...
January 1, 2018: European Journal of Preventive Cardiology
Felix Büttner, Ivan Lemesh, Geoffrey S D Beach
Magnetic skyrmions are topological quasiparticles of great interest for data storage applications because of their small size, high stability, and ease of manipulation via electric current. However, although models exist for some limiting cases, there is no universal theory capable of accurately describing the structure and energetics of all skyrmions. The main barrier is the complexity of non-local stray field interactions, which are usually included through crude approximations. Here we present an accurate analytical framework to treat isolated skyrmions in any material, assuming only a circularly-symmetric 360° domain wall profile and a homogeneous magnetization profile in the out-of-plane direction...
March 13, 2018: Scientific Reports
Georgi Tchernev
BACKGROUND: We present to the attention of the medical, dermatological and oncosurgical community data that serves to indicate the indispensability of optimisation of the algorithm and recommendations for diagnosis and surgical treatment of cutaneous melanoma. These recommendations could be referred to different subgroups of patients in different clinical stages as well as to patients with different initial characterisation (histological morphology) of the primary tumours. One step surgery is not a myth, even more, it could prove to be one of the best solutions for some patient collectives with advanced stages of melanoma...
February 15, 2018: Open Access Macedonian Journal of Medical Sciences
Michael B Boffa, Marlys L Koschinsky
PURPOSE OF REVIEW: Evidence continues to mount for an important role for elevated plasma concentrations of lipoprotein(a) [Lp(a)] in mediating risk of atherothrombotic and calcific aortic valve diseases. However, there continues to be great uncertainty regarding some basic aspects of Lp(a) biology including its biosynthesis and catabolism, its mechanisms of action in health and disease, and the significance of its isoform size heterogeneity. Moreover, the precise utility of Lp(a) in the clinic remains undefined...
March 9, 2018: Current Opinion in Lipidology
D A Blank
Tail signals and rump patch exposure in ungulates are well-documented phenomena, but there is no consensus about their functional significance, which has remained disputed. In addition, these patterns have been analyzed for only a limited number of ungulate species; and until now did not include goitered gazelles. This paper, then, will discuss these aspects of goitered gazelle antipredator behavior. I chose human harassments as predator threats and found that tail-flagging, stotting and presentation of the white rump-patch were displayed mostly by adult females, less often by adult males, and least in sub-adults...
March 8, 2018: Behavioural Processes
Sam J L van der Tuin, Zhuang Li, Jimmy F P Berbée, Inge Verkouter, Linda E Ringnalda, Annette E Neele, Jan B van Klinken, Sander S Rensen, Jingyuan Fu, Menno P J de Winther, Albert K Groen, Patrick C N Rensen, Ko Willems van Dijk, Yanan Wang
BACKGROUND: Lipopolysaccharide (LPS) decreases hepatic CETP (cholesteryl ester transfer protein) expression albeit that the underlying mechanism is disputed. We recently showed that plasma CETP is mainly derived from Kupffer cells (KCs). In this study, we investigated the role of KC subsets in the mechanism by which LPS reduces CETP expression. METHODS AND RESULTS: In CETP-transgenic mice, LPS markedly decreased hepatic CETP expression and plasma CETP concentration without affecting hepatic macrophage number...
March 10, 2018: Journal of the American Heart Association
Risto J Kaaja, M Gary Nicholls
Studies in the early 1990s suggested that a hormone identical to ouabain or an isomer of ouabain is secreted by the adrenal glands into the circulation and plays a role in the regulation of arterial pressure and cardiac and renal function. This hormone, known as endogenous ouabain (EO), was claimed to contribute to the pathophysiology of a number of disorders including heart failure, renal failure, pregnancy-induced, and essential hypertension. However, some research groups have been unable to confirm the presence of EO in the human circulation and the issue remains in dispute...
March 10, 2018: BioFactors
Alfred Lim, Vivian Eng, Steve M J Janssen, Jason Satel
Inhibition of return (IOR) refers to an increase in reaction times to targets that appeared at a previously cued location relative to an uncued location, often investigated using a spatial cueing paradigm. Despite numerous studies that have examined many aspects of IOR, the neurophysiological mechanisms underlying IOR are still in dispute. The objective of the current research is to investigate the plausible mechanisms by manipulating the cue and target types between central and peripheral stimuli in a traditional cue-target paradigm with saccadic responses to targets...
March 8, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
Hamdia M Ahmed, Mosleh S Kareem, Nazar P Shabila, Barzhang Q Mzori
BACKGROUND: Religious leaders are one of the key actors in the issue of female genital cutting (FGC) due to the influential position they have in the community and the frequent association of FGC with the religion. This study aimed to assess the knowledge and perspectives of the local religious leaders in Erbil governorate, Iraqi Kurdistan Region about different aspects of FGC. METHODS: In-depth interviews were conducted with a sample of 29 local religious leaders...
March 7, 2018: Reproductive Health
Hang-Tong Hu, Zhu Wang, Ming Kuang, Wei Wang
BACKGROUND: Preoperative microvascular invasion (MVI) assessment in hepatocellular carcinoma (HCC) is one of the current research focuses, with studies reporting controversial results regarding MVI-associated risk factors. As a possible source of bias, reported MVI rate (percentage of MVI-positive patients) varies a lot among studies. Pathological examination should have been the golden criteria of MVI diagnosis, but no standard and generally adopted pathological examination protocol exists...
March 7, 2018: World Journal of Surgical Oncology
Khalil Jawad, Stefan Feder, Markus Barten, Jens Garbade
Heart transplantation is the gold standard therapy for patients diagnosed with end-stage heart failure. Despite the shortage of appropriate donor organs, the transplantation of hepatitis C-infected hearts is disputed. Previous research has shown that long-term results are controversial, and the risk of severe clinical infection should not be underestimated.
March 3, 2018: European Journal of Cardio-thoracic Surgery
Abida Batool, Mohammad Amjad Kamal, Syed Mohd Danish Rizvi, Sajid Rashid
Alzheimer's disease (AD) is recognized as progressive multifaceted and multi-factorial neurodegenerative disorder which causes dementia among elderly people. Although, researchers in this field have put considerable efforts for the investigation of novel and appropriate therapeutic measures towards the cure of AD, unfortunately, no effective prevention therapy for this disease is available till date. In fact, various aspects involved in the onset and progression of AD are still disputed or uncovered. However, to achieve definite and direct cure of AD, researcher's attention has been drawn towards exploration of new therapeutics targets...
March 5, 2018: Current Drug Metabolism
Lingli Fan, Jie Li, Miao Xiang, Li Yuan, Yu Zhang, Gang Feng, Xiaobo Du
Objective To investigate the attitudes of radiation oncologists towards using percutaneous endoscopic gastrostomy (PEG) to solve nutritional problems in patients with head and neck cancer (HNC) undergoing radiotherapy. Methods A self-reported questionnaire was developed and used to assess the willingness of radiation oncologists from 26 hospitals throughout several provinces in China to use the nutritional method. Results Of the 433 radiation oncologists who were contacted and returned questionnaires, 361 were completed correctly and used in the study (83...
January 1, 2018: Journal of International Medical Research
Uwe Wollina, Piotr Brzezinski
Cutaneous melanoma is an aggressive neoplasia of melanocytes. Prognosis is dependent on tumor stage. Stage IV melanoma is characterized by the occurrence of distant metastases. Response of metastases to classical chemotherapy is limited and toxicity of treatment is high. In recent years, new developments in immunotherapy and targeted therapies improved prognosis of stage IV melanoma patients with better tolerability of treatment. There is no dispute about surgical treatment of primary melanoma. But what is the value of metastasectomy in the era of new systemic treatments? This review aims to discuss available data for surgical removal of distant metastases for several organs and tissues...
March 6, 2018: Wiener Medizinische Wochenschrift
V I Borodulin, S P Gliantsev
The article considers particular key methodological aspects of problem of scientific clinical school in national medicine. These aspects have to do with notion of school, its profile, issues of pedagogues, teachings and followers, subsidiary schools and issue of ethical component of scientific school. The article is a polemic one hence one will find no definite answers to specified questions. The reader is proposed to ponder over answers independently adducing examples of pro and contra. The conclusion is made about necessity of studying scientific schools in other areas of medicine and further elaboration of problem...
July 2017: Problemy Sot︠s︡ialʹnoĭ Gigieny, Zdravookhranenii︠a︡ i Istorii Medit︠s︡iny
Floortje B Moes, Eddy S Houwaart, Diana M J Delnoij, Klasien Horstman
RATIONALE, AIMS, AND OBJECTIVES: This paper examines a remarkable dispute between Dutch insurers, hospitals, doctors, and patients about a set of quality indicators. In 2013, private insurers planned to drastically reform Dutch emergency care using quality indicators they had formulated drawing from clinical guidelines, RCTs, and systematic reviews. Insurers' plans caused much debate in the field of emergency care. As quality indicators have come to play a more central role in health care governance, the questions what constitutes good evidence for them, how they ought to be used, and who controls them have become politically and morally charged...
March 6, 2018: Journal of Evaluation in Clinical Practice
Sarah Seiler-Mussler, Anne S Limbach, Insa E Emrich, John W Pickering, Heinz J Roth, Danilo Fliser, Gunnar H Heine
BACKGROUND AND OBJECTIVES: In patients with CKD, elevated plasma parathyroid hormone (PTH) levels are associated with greater cardiovascular morbidity and mortality. However, the reference method for PTH measurement is disputed. It has been argued that measurement of nonoxidized PTH better reflects biologically active PTH than measurements with conventional assays. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: PTH and nonoxidized PTH levels were measured at study baseline in 535 patients with CKD with an eGFR range between 89 and 15 ml/min per 1...
March 5, 2018: Clinical Journal of the American Society of Nephrology: CJASN
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