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Mateusz Psurski, Agnieszka Łupicka-Słowik, Agnieszka Adamczyk-Woźniak, Joanna Wietrzyk, Andrzej Sporzyński
Objective The aim of the study was to evaluate the antiproliferative potential of simple phenylboronic acid and benzoxaborole derivatives as well as to provide preliminary insight into their mode of action in cancer cells in vitro. Methods The antiproliferative activity was assessed in five diverse cancer cell lines via the SRB method (sulforhodamine B) or MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) method after 72 h of treatment. Further studies of the mechanism of action consisted of the influence of the compounds on cell cycle progression and apoptosis induction, which was assessed by flow cytometry, caspase-3 enzymatic activity, fluorescence microscopy and western blot analysis...
May 19, 2018: Investigational New Drugs
Darine Abozaid, Alyaa Ramadan, Heba Barakat, Nawal Khalafallah
The study aimed to develop a patient-friendly acyclovir gel with improved efficacy in viral mouth infections, in response to patients' need for an intraoral acyclovir product. Acyclovir was loaded in lipid nanocapsules in gel form, and formulae were evaluated for oromucosal delivery. Lipid nanocapsules were prepared by the phase inversion method. Formulae were optimized to achieve maximum acyclovir entrapment and minimum acyclovir precipitation. Colloidal properties, and pharmaceutical performance indicators were assessed...
May 17, 2018: European Journal of Pharmaceutical Sciences
Masanori Toyofuku, Sang-Sun Yoon
Pseudomonas aeruginosa, a Gram-negative bacterium, is characterized by its versatility that enables persistent survival under adverse conditions. It can grow on diverse energy sources and readily acquire resistance to antimicrobial agents. As an opportunistic human pathogen, it also causes chronic infections inside the anaerobic mucus airways of cystic fibrosis patients. As a strict respirer, P. aeruginosa can grow by anaerobic nitrate ( [Formula: see text] ) respiration. Nitric oxide (NO) produced as an intermediate during anaerobic respiration exerts many important effects on the biological characteristics of P...
2018: Advances in Microbial Physiology
Mustafa Yiğit
This paper aims the calculations of cross section of the 27 Al(n,t)25 Mg, 50 Cr(n,t)48 V, 56 Fe(n,t)54 Mn, 58 Ni(n,t)56 Co, 64 Zn(n,t)62 Cu, 70 Ge(n,t)68 Ga, 92 Mo(n,t)90 Nb, 106 Cd(n,t)104 Ag and 114 Cd(n,t)112 Ag nuclear reactions. These cross section calculations were obtained using the different level density models in ALICE/ASH code. Besides, the cross sections of the investigated reactions at incident energies near 14.6 MeV were predicted by using the empirical formulae suggested in our previous paper and in the literature...
May 16, 2018: Applied Radiation and Isotopes
Yuetao Liu, Wenqian Xu, GuoHong Wang, Xuemei Qin
ETHNOPHARMACOLOGICAL RELEVANCE: Huangqi Jianzhong Tang (HQJZ), a celebrated traditional Chinese medicine (TCM), is commonly used for treatment of chronic atrophic gastritis (CAG) in China. AIM OF THE STUDY: We aimed to screen out the material basis of HQJZ against CAG. MATERIALS AND METHODS: CAG rat model was constructed by alternant administrations of ammonia solution and sodium deoxycholate, and the hunger disorder method. Body weight, biochemical indexes and histopathological exam were used to evaluate the efficacy of HQJZ...
May 16, 2018: Journal of Ethnopharmacology
Heba Elmotasem, Hala K Farag, Abeer A A Salama
The objective of this study was to innovate an effective oral sustained release hepatoprotective formula for - the water soluble drug - caffeine. Caffeine is rapidly absorbed and eliminated which dictates frequent administration to achieve adequate therapeutic effect. A w/o Pickering emulsion incorporating caffeine in the internal phase was primed. It contained wheat germ oil and was stabilized by synthesized magnesium oxide nanoparticles (MgO NPs). Components selection was based on their antioxidant, hepatoprotective and anticarcinogenic effects...
May 16, 2018: International Journal of Pharmaceutics
Isabel Yorke, Pippa White, Amelia Weston, Monica Rafla, Tony Charman, Emily Simonoff
This review (Prospero Registration Number: CRD42017057915) aimed to systematically identify and summarize existing research on the relationship between additional emotional and behavioral problems (EBP) in children with autism, and parenting stress (PS) and mental health problems (MHP) in their parents. Sixty-seven studies met criteria for inclusion in the review, 61 of which were included in the meta-analysis. Pooled correlation coefficients were in the low to moderate range ([Formula: see text]). Some evidence for moderation by measurement characteristics was found...
May 18, 2018: Journal of Autism and Developmental Disorders
Jen Heng Pek, Elizabeth Mj Tan, Ying Hao, Gene Yk Ong
INTRODUCTION: Multiple formulae have been proposed for calculating orotracheal depth for paediatric intubation. However, literature on the validation of these formulae in the emergency department setting is limited. Three methods described in the local Advanced Paediatric Life Support curriculum include the Broselow tape, endotracheal tube (ETT) size x 3, and the age-based formula of age divided by 2, add 12. We aimed to determine their accuracy. MATERIALS AND METHODS: Patients with intubation performed in the Children's Emergency from 1 January 2009 to 31 December 2013 were included in this retrospective observational study...
April 2018: Annals of the Academy of Medicine, Singapore
L L Hui, A M Li, E A S Nelson, G M Leung, S L Lee, C M Schooling
BACKGROUND/OBJECTIVES: Short-term breastfeeding from mothers with gestational diabetes (GDM) may programme metabolism and increase offspring diabetes risk. We examined the association of in utero GDM exposure with adiposity from infancy to adolescence, and whether any association was modified by breastfeeding during early infancy. METHODS: In the prospective Chinese birth cohort "Children of 1997" (n = 7342, 88% follow-up rate), generalised estimate equations with multiple imputation were used to assess associations of in utero GDM exposure with age- and sex-specific body mass index (BMI) z-score during infancy (3 and 9 months), childhood (2- < 8 years) and adolescence (8-16 years), adjusted for sex, parity, maternal age, birth place, preeclampisa, smoking, and family socio-economic position...
May 17, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
Chuang Li, Lun-Hui Hu, Yi Zhou, Fu-Chun Zhang
Sau, Lutchyn, Tewari and Das Sarma (SLTD) proposed a heterostructure consisting of a semiconducting thin film sandwiched between an s-wave superconductor and a magnetic insulator and showed possible Majorana zero mode. Here we study spin polarization of the vortex core states and spin selective Andreev reflection at the vortex center of the SLTD model. In the topological phase, the differential conductance at the vortex center contributed from the Andreev reflection, is spin selective and has a quantized value [Formula: see text] at zero bias...
May 18, 2018: Scientific Reports
Nemanja Marinkovic, Petar Milovanovic, Marija Djuric, Nenad Nedeljkovic, Ksenija Zelic
AIMS: To test the applicability of European formula for dental maturity estimation in non-adults on Serbian sample and compare its accuracy with Willems' age estimation method. MATERIALS AND METHODS: Panoramic radiographs of 423 children (192 boys and 231 girls) aged between 5 to 15 were evaluated. Willems' method and European formula were applied to estimate dental age. Intra-class correlation (ICC) coefficients between estimated age and chronological age for each method and sex were reported separately...
April 26, 2018: Forensic Science International
Jamal Sakhr, John M Nieminen
Two decades ago, Wang and Ong, [Phys. Rev. A 55, 1522 (1997)]10.1103/PhysRevA.55.1522 hypothesized that the local box-counting dimension of a discrete quantum spectrum should depend exclusively on the nearest-neighbor spacing distribution (NNSD) of the spectrum. In this Rapid Communication, we validate their hypothesis by deriving an explicit formula for the local box-counting dimension of a countably-infinite discrete quantum spectrum. This formula expresses the local box-counting dimension of a spectrum in terms of single and double integrals of the NNSD of the spectrum...
March 2018: Physical Review. E
Jun Sato, Katsuhiro Nishinari
We consider the asymmetric simple exclusion process with Langmuir kinetics in the closed boundary condition. We analytically obtain the exact stationary state and a series of excited states of the system in the limit where Langmuir kinetics is infinitesimally small. Based on this result, we propose an analytical formula for the time evolution of physical quantities of the system.
March 2018: Physical Review. E
Alain Nogaret, Alastair King
Inhibitory neural networks are found to encode high volumes of information through delayed inhibition. We show that inhibition delay increases storage capacity through a Stirling transform of the minimum capacity which stabilizes locally coherent oscillations. We obtain both the exact and asymptotic formulas for the total number of dynamic attractors. Our results predict a (ln2)^{-N}-fold increase in capacity for an N-neuron network and demonstrate high-density associative memories which host a maximum number of oscillations in analog neural devices...
March 2018: Physical Review. E
A Amitai, D Holcman
The time for a DNA sequence to find its homologous counterpart depends on a long random search inside the cell nucleus. Using polymer models, we compute here the mean first encounter time (MFET) between two sites located on two different polymer chains and confined locally by potential wells. We find that reducing tethering forces acting on the polymers results in local decondensation, and numerical simulations of the polymer model show that these changes are associated with a reduction of the MFET by several orders of magnitude...
March 2018: Physical Review. E
Markus Nyberg, Ludvig Lizana, Tobias Ambjörnsson
In applications spanning from image analysis and speech recognition to energy dissipation in turbulence and time-to failure of fatigued materials, researchers and engineers want to calculate how often a stochastic observable crosses a specific level, such as zero. At first glance this problem looks simple, but it is in fact theoretically very challenging, and therefore few exact results exist. One exception is the celebrated Rice formula that gives the mean number of zero crossings in a fixed time interval of a zero-mean Gaussian stationary process...
March 2018: Physical Review. E
Karolina Cichoń-Kawa, Małgorzata Mizerska-Wasiak, Jadwiga Małdyk, Agnieszka Turczyn, Agnieszka Rybi-Szumińska, Anna Wasilewska, Agnieszka Firszt-Adamczyk, Roman Stankiewicz, Beata Bieniaś, Przemysław Sikora, Katarzyna Gadomska-Prokop, Ryszard Grenda, Małgorzata Pańczyk-Tomaszewska
IgA nephropathy is the most common glomerulonephritis in the world. For diagnosis kidney biopsy is necessary. AIM: The aim of the study was assessment the significance of IgA, C3 and IgG deposits intensity and location in kidney childhood IgA nephropathy (IgAN) for the symptoms of the disease and the follow up. MATERIALS AND METHODS: Study population consisted of 81 children, average 11,45±3,99 years. IgAN was recognized based on renal biopsy, performed 1,2±1,84, median 0,5 years after the onset...
April 23, 2018: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
Tomasz Drożdż, Przemko Kwinta, Zbigniew Kordon, Krystyna Sztefko, Andrzej Rudziński, Katarzyna Zachwieja, Monika Miklaszewska, Danuta Czarnecka, Dorota Drożdż
Left ventricular hypertrophy is the most common organ damage in children with chronic kidney disease (CKD). AIM: The aim of the study was to assess the usefulness of B-type natriuretic peptide (BNP) as a marker of heart injury in children with CKD. MATERIALS AND METHODS: We included 66 children (41 boys and 25 girls) aged 0.7 to 18.6 (median 11.6) years with CKD stage 1-5. The concentrations of urea, creatinine, cystatin C and BNP in blood serum were assessed, and the estimated glomerular filtration rate (eGFR) was calculated from the Schwartz and Filler formulas...
April 23, 2018: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
Jorge Andres Navarro-Giraldo, Carlos Jose Quimbay
We study the conductance in gapped single-layer graphene junctures as a function of bangap, pseudohelicity and charge carriers density. To do it, we first calculate the transmission coefficients of massive charge carries for p-n and n-p-n junctures of gapped single-layer graphene. Next, we calculate the conductance for these two systems using the Landauer formula. Only for the p-n juncture case and non-zero bandgap values, we find the existence of a contribution to the conductance from pseudohelicity inversion states, which is small compared to the contribution from pseudohelicity conservation states...
May 18, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
Thomas Simler, Sylvie Choua, Andreas A Danopoulos, Pierre Braunstein
The double aminolysis reaction of [Co{N(SiMe3)2}2] by the salt 1-(6-((dicyclohexylphosphaneyl)methyl)pyridin-2-yl)-3-(2,6-diisopropylphenyl)-1H-imidazol-3-ium bromide, which contains one phosphane, one pyridine and one imidazolium groups, of formula [o-Cy2PCH2(C5H3N)(o-C3H3N2DiPP)]Br and abbreviated as (CyPNpyrCim)Br, was previously shown to afford the Co(ii) complex [Co(CyP*NaCNHC)Br] (1) containing a dearomatised picolyl moiety in the tridentate, anionic donor ligand CyP*NaCNHC (Na = anionic amido, P* = vinylic P donor)...
May 18, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
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