337 research outputs found
On Some Hadamard-Type Inequalıtıes for (r,m) -Convex Functıons
In this paper, we define a new class of convex functions which is called (r,m) - convex functions. We also prove some Hadamard\u27s type inequalities based on this new definition
Comparison of hyperpronation and supination‑flexion techniques in children presented to emergency department with painful pronation
Context: Radial head subluxation, also known as ‘pulled elbow’, ‘dislocated elbow’ or ‘nursemaid’s elbow’, is one of the most common upper extremity injuries in young children and a common reason to visit Emergency Department (ED).Aim: To compare supination of the wrist followed by flexion of the elbow (the traditional reduction technique) to hyperpronation of the wrist in the reduction of radial head subluxations (nursemaid’s elbow) maneuvers in children presented to ED with painful pronation and to determine which method is less painful by children.Settings and Design: This prospective randomize study involved a consecutive sampling of children between 1‑5 year old who were presented to the ED with painful pronation.Materials and Methods: The initial procedure was repeated if baseline functioning did not return 20 minutes after the initial reduction attempt. Failure of that technique 30 minutes after the initial reduction attempt resulted in a cross‑over to the alternate method of reduction.Statistical analysis used: Datas were analyzed using SPSS for Windows 16.0. Mean, standard deviation, independent samples t test, Chi‑square test, and paired t test were used in the assessment of pain scores before and after reduction.Results: When pain scores before and after reduction were compared between groups to determine which technique is less painful by children, no significant difference was found between groups.Conclusions: It was found that in the reduction of radial head subluxations, the hyperpronation technique is more effective in children who were presented to ED with painful pronation compared with supination‑flexion. However, there was no significant difference between these techniques in terms of pain.Key words: Child, emergency department, nursemaid’s elbow, pain, pulled elbo
Turkey: Coronary and structural heart interventions from 2010 to 2015
Growing populations and ageing demographics lead to an increased burden of ischaemic heart disease and related cardiovascular interventions, resulting in pressure on healthcare sys-Tems. Although the healthcare system in Turkey has undergone comprehensive remodelling over the last decade, there are many challenges to overcome, including better reimbursement for car-diovascular interventions, standardisation of interventional cardiology services and research-related activities. In this manuscript, we present an overview of coronary and structural heart interventions in Turkey, as well as providing information on current reimbursement policies and the healthcare system. © Europa Digital and Publishing 2017. All Rights Reserved
Ostracods as ecological and isotopic indicators of lake water salinity changes: the Lake Van example
Ostracods are common lacustrine calcitic microfossils. Their faunal
assemblage and morphological characteristics are important ecological
proxies, and their valves are archives of geochemical information related to
palaeoclimatic and palaeohydrological changes. In an attempt to assess
ostracod ecology (taxonomic diversity and valve morphology) combined with
valve geochemistry (δ18O and δ13C) as
palaeosalinity indicators, we analysed sedimentary material from the
International Continental Scientific Drilling Program (ICDP) Ahlat Ridge site
from a terminal and alkaline lake, Lake Van (Turkey), covering the last
150 kyr. Despite a low species diversity, the ostracod faunal assemblage
reacted sensitively to changes in the concentration of total dissolved salts
in their aquatic environment. Limnocythere inopinata is present
throughout the studied interval, while Limnocythere sp. A is
restricted to the Last Glacial period and related to increased lake water
salinity and alkalinity. The presence of species belonging to the genus
Candona is limited to periods of lower salinity. Valves of
Limnocytherinae species (incl. L. inopinata) display nodes (hollow
protrusions) during intervals of increased salinity. Both the number of noded
valves and the number of nodes per valve appear to increase with rising
salinity, suggesting that node formation is related to hydrological changes
(salinity and/or alkalinity). In contrast to Lake Van's bulk
δ18O record, the δ18O values of ostracod valves
do record relative changes of the lake volume, with lower values during high
lake level periods. The δ13C values of different species
reflect ostracod habitat preferences (i.e. infaunal vs. epifaunal) but are
less sensitive to hydrological changes. However, combined with other proxies,
decreasing Holocene δ13C values may indicate a freshening of
the lake water compared to the low lake level during the Last Glacial period.
The Lake Van example underscores the significance and value of coupling
ostracod ecology and valve geochemistry in palaeoenvironmental studies of
endorheic lake basins.</p
The Technical and Financial Effects of Parenteral Supplementation with Selenium and Vitamin E during Late Pregnancy and the Early Lactation Period on the Productivity of Dairy Cattle
This study aimed to determine the effects of parenteral selenium (Se) and vitamin E supplementation on economic impact, milk yield, and some reproductive parameters in high-yield dairy cows in the dry period and in those at the beginning of lactation. At the beginning of the dry period, cows (n = 323) were randomly divided into three groups as follows: Treatment 1 (T1), Treatment 2 (T2), and Control (C). Cows in group T1 received this preparation 21 days before calving and on calving day, and cows in group T2 received it only on calving day. The cows in the control group did not receive this preparation. Supplementation with Se increased Se serum levels of cows treated at calving day (p<0.05). Differences in milk yield at all weeks and the electrical conductivity values at the 8th and 12th weeks were significant (p<0.05). Supplementation with Se and Vitamin E decreased the incidence of metritis, the number of services per conception and the service period, but had no effects on the incidence of retained fetal membrane. A partial budgeting analysis indicated that Se supplementation was economically profitable; cows in group T1 averaged 240.6 per cow. Supplementation with Se and Vitamin E has been found to increase serum Se levels, milk yield, and has positive effects on udder health by decreasing milk conductivity values and incidence of sub-clinical mastitis
Wolff-Parkinson-White Syndrome: De Novo Variants and Evidence for Mutational Burden in Genes Associated with Atrial Fibrillation
BACKGROUND: Wolff-Parkinson-White (WPW) syndrome is a relatively common arrhythmia affecting ~1-3/1,000 individuals. Mutations in PRKAG2 have been described in rare patients in association with cardiomyopathy. However, the genetic basis of WPW in individuals with a structurally normal heart remains poorly understood. Sudden death due to atrial fibrillation (AF) can also occur in these individuals. Several studies have indicated that despite ablation of an accessory pathway, the risk of AF remains high in patients compared to general population.
METHODS: We applied exome sequencing in 305 subjects, including 65 trios, 80 singletons, and 6 multiple affected families. We used de novo analysis, candidate gene approach, and burden testing to explore the genetic contributions to WPW.
RESULTS: A heterozygous deleterious variant in PRKAG2 was identified in one subject, accounting for 0.6% (1/151) of the genetic basis of WPW in this study. Another individual with WPW and left ventricular hypertrophy carried a known pathogenic variant in MYH7. We found rare de novo variants in genes associated with arrhythmia and cardiomyopathy (ANK2, NEBL, PITX2, and PRDM16) in this cohort. There was an increased burden of rare deleterious variants (MAF ≤ 0.005) with CADD score ≥ 25 in genes linked to AF in cases compared to controls (P = .0023).
CONCLUSIONS: Our findings show an increased burden of rare deleterious variants in genes linked to AF in WPW syndrome, suggesting that genetic factors that determine the development of accessory pathways may be linked to an increased susceptibility of atrial muscle to AF in a subset of patients
De Novo Missense Mutations in DHX30 Impair Global Translation and Cause a Neurodevelopmental Disorder
DHX30 is a member of the family of DExH-box helicases, which use ATP hydrolysis to unwind RNA secondary structures. Here we identified six different de novo missense mutations in DHX30 in twelve unrelated individuals affected by global developmental delay (GDD), intellectual disability (ID), severe speech impairment and gait abnormalities. While four mutations are recurrent, two are unique with one affecting the codon of one recurrent mutation. All amino acid changes are located within highly conserved helicase motifs and were found to either impair ATPase activity or RNA recognition in different in vitro assays. Moreover, protein variants exhibit an increased propensity to trigger stress granule (SG) formation resulting in global translation inhibition. Thus, our findings highlight the prominent role of translation control in development and function of the central nervous system and also provide molecular insight into how DHX30 dysfunction might cause a neurodevelopmental disorder
Should the poultry red mite Dermanyssus gallinae be of wider concern for veterinary and medical science?
The poultry red mite Dermanyssus gallinae is best known as a threat to the laying-hen industry; adversely affecting production and hen health and welfare throughout the globe, both directly and through its role as a disease vector. Nevertheless, D. gallinae is being increasingly implemented in dermatological complaints in non-avian hosts, suggesting that its significance may extend beyond poultry. The main objective of the current work was to review the potential of D. gallinae as a wider veterinary and medical threat. Results demonstrated that, as an avian mite, D. gallinae is unsurprisingly an occasional pest of pet birds. However, research also supports that these mites will feed from a range of other animals including: cats, dogs, rodents, rabbits, horses and man. We conclude that although reported cases of D. gallinae infesting mammals are relatively rare, when coupled with the reported genetic plasticity of this species and evidence of permanent infestations on non-avian hosts, potential for host-expansion may exist. The impact of, and mechanisms and risk factors for such expansion are discussed, and suggestions for further work made. Given the potential severity of any level of host-expansion in D. gallinae, we conclude that further research should be urgently conducted to confirm the full extent of the threat posed by D. gallinae to (non-avian) veterinary and medical sectors
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