Lepton flavor violation decays τ−→μ−P1P2\tau^-\to \mu^- P_1 P_2 in the topcolor-assisted technicolor model and the littlest Higgs model with TT parity

The new particles predicted by the topcolor-assisted technicolor ($TC2$) model and the littlest Higgs model with T-parity (called $LHT$ model) can induce the lepton flavor violation ($LFV$) couplings at tree level or one loop level, which might generate large contributions to some $LFV$ processes. Taking into account the constraints of the experimental data on the relevant free parameters, we calculate the branching ratios of the $LFV$ decay processes $\tau^-\to\mu^- P_1 P_2$ with $P_1 P_2$ = $\pi^+\pi^-$, $K^+K^-$ and $K^0\bar{K^0}$ in the context of these two kinds of new physics models. We find that the $TC2$ model and the $LHT$ model can indeed produce significant contributions to some of these $LFV$ decay processes.Comment: 24 pages, 7 figure

Top Quark Decays into Heavy Quark Mesons

For top quark decays into heavy quark mesons $\Upsilon$ and $\bar{B}_c^*$ , a complete calculation to the leading order both in QCD coupling constant $\alpha_s$ and in $v$, the typical velocity of the heavy quarks inside the mesons, is performed. Relatons between the top quark mass and the decay branching ratios are studied. Comparion with the results which are obtained by using the quark frangmentation functions is also discussed. The branching ratios are consistent (within a factor of $2\sim 3$) with that obtained using fragmentation functions at $m_t\sim 150$ GeV.Comment: 15 pages in LaTex form, 4 figures include

The preparation of HEMA-MPC films for ocular drug delivery

There is a need to prolong drug residence time using a biocompatible formulation in the subconjunctival space after surgery to treat glaucoma. Drug releasing discs were prepared with 2-(hydroxyethyl)methacrylate (HEMA) and 2-methacryloyl-oxyethyl phosphorylcholine (MPC). The ratio of bound water (Wb) to free water (Wf) ratio increased from 1:0.3 to 1:6.8 with increasing MPC (0 to 50%, w/w). The optimal balance between water content, SR and mechanical strength were obtained with 10% MPC (w/w) hydrogels. Water-alcohol mixtures were examined to facilitate loading of poorly soluble drugs, and they showed greater hydrogel swelling than either water or alcohol alone. The SR was 1.2 ± 0.02 and 3.3 ± 0.1 for water and water:ethanol (1:1) respectively. HEMA-MPC (10%) discs were loaded with dexamethasone using either water:ethanol (1:1) or methanol alone. Drug release was examined in an outflow rig model that mimics the subconjunctival space in the eye. Dexamethasone loading increased from 0.3 to 1.9 mg/disc when the solvent was changed from water:ethanol (1:1) to methanol with the dexamethasone half-life (t½) increasing from 1.9 to 9.7 days respectively. These encouraging results indicate that HEMA-MPC hydrogels have the potential to sustain the residence time of a drug in the subconjunctival space of the eye

Angiopoietin-1 promotes functional neovascularization that relieves ischemia by improving regional reperfusion in a swine chronic myocardial ischemia model

10.1007/s11373-006-9082-xJournal of Biomedical Science134579-59

Global Formaldehyde Products From the Ozone Mapping and Profiler Suite (OMPS) Nadir Mappers on Suomi NPP and NOAA-20

We describe new publicly available, multi-year formaldehyde (HCHO) data records from the Ozone Mapping and Profiler Suite (OMPS) nadir mapper (NM) instruments on the Suomi NPP and NOAA-20 satellites. The OMPS-NM instruments measure backscattered UV light over the globe once per day, with spatial resolutions close to nadir of 50 × 50 km2 (OMPS/Suomi-NPP) and 17 × 17 km2 or 12 × 17 km2 (OMPS/NOAA-20). After a preliminary instrument line shape and wavelength calibration using on-orbit observations, we use the backscatter measurements in a direct spectral fit of radiances, in combination with a nadir reference spectrum collected over a clean area, to determine slant columns of HCHO. The slant columns are converted to vertical columns using air mass factors (AMFs) derived through scene-by-scene radiative transfer calculations. Finally, a correction is applied to account for background HCHO in the reference spectrum, as well as any remaining high-latitude biases. We investigate the consistency of the OMPS products from Suomi NPP and NOAA-20 using long-term monthly means over 12 geographic regions, and also compare the products with publicly available TROPOMI HCHO observations. OMPS/Suomi-NPP and OMPS/NOAA-20 monthly mean HCHO vertical columns are highly consistent (r = 0.98), with low proportional (2\%) and offset (2 × 1014 molecules cm−2) biases. OMPS HCHO monthly means are also well-correlated with those from TROPOMI (r = 0.92), although they are consistently 10\% ± 16\% larger in polluted regions (columns >8 × 1015 molecules cm−2). These differences result primarily from differences in AMFs

Registered Replication Report: Dijksterhuis and van Knippenberg (1998)

Dijksterhuis and van Knippenberg (1998) reported that participants primed with a category associated with intelligence ("professor") subsequently performed 13% better on a trivia test than participants primed with a category associated with a lack of intelligence ("soccer hooligans"). In two unpublished replications of this study designed to verify the appropriate testing procedures, Dijksterhuis, van Knippenberg, and Holland observed a smaller difference between conditions (2%-3%) as well as a gender difference: Men showed the effect (9.3% and 7.6%), but women did not (0.3% and -0.3%). The procedure used in those replications served as the basis for this multilab Registered Replication Report. A total of 40 laboratories collected data for this project, and 23 of these laboratories met all inclusion criteria. Here we report the meta-analytic results for those 23 direct replications (total N = 4,493), which tested whether performance on a 30-item general-knowledge trivia task differed between these two priming conditions (results of supplementary analyses of the data from all 40 labs, N = 6,454, are also reported). We observed no overall difference in trivia performance between participants primed with the "professor" category and those primed with the "hooligan" category (0.14%) and no moderation by gender

International survey of treatment practices for atopic dermatitis in pregnant and breastfeeding women: Physician perspectives

Background and Objectives Systemic treatment of pregnant/breastfeeding atopic dermatitis (AD) patients is challenging due to limited safety data. We explored treatment practices with systemic agents, including the guideline-recommended cyclosporine as the first systemic choice as well as emerging therapies, in this vulnerable population. Patients and Methods The Global Allergy and Asthma Excellence Network (GA2LEN) ADCARE initiative collected data from physicians worldwide who treat pregnant women with AD. Physicians completed an electronic questionnaire on the use of systemic agents in pregnant/breastfeeding AD patients. Results 103 physicians from 32 countries completed the survey, primarily dermatologists (n = 48) or allergologists (n = 43). Antihistamines were the systemic drug most often considered to be used during pregnancy/breastfeeding (n = 73/81, 90.1%), with fewer physicians considering the use of systemic agents for the first trimester compared to later stages of pregnancy. For acute flares, systemic corticosteroids (n = 34/80, 42.5%) were preferred, followed by biologics and antihistamines (each n = 15/80, 18.8%). Although the guideline-recommended cyclosporine is sometimes considered for AD during pregnancy (n = 38/81, 46.9%), it was rarely considered as the preferred drug by physicians (n = 1/80, 1.25%). Conclusions Our study shows a misalignment between guideline recommendations and prescription patterns and highlights an unmet need for knowing and using the existing recommendations

Serum magnesium and calcium levels in relation to ischemic stroke : Mendelian randomization study

ObjectiveTo determine whether serum magnesium and calcium concentrations are causally associated with ischemic stroke or any of its subtypes using the mendelian randomization approach.MethodsAnalyses were conducted using summary statistics data for 13 single-nucleotide polymorphisms robustly associated with serum magnesium (n = 6) or serum calcium (n = 7) concentrations. The corresponding data for ischemic stroke were obtained from the MEGASTROKE consortium (34,217 cases and 404,630 noncases).ResultsIn standard mendelian randomization analysis, the odds ratios for each 0.1 mmol/L (about 1 SD) increase in genetically predicted serum magnesium concentrations were 0.78 (95% confidence interval [CI] 0.69-0.89; p = 1.3 7 10-4) for all ischemic stroke, 0.63 (95% CI 0.50-0.80; p = 1.6 7 10-4) for cardioembolic stroke, and 0.60 (95% CI 0.44-0.82; p = 0.001) for large artery stroke; there was no association with small vessel stroke (odds ratio 0.90, 95% CI 0.67-1.20; p = 0.46). Only the association with cardioembolic stroke was robust in sensitivity analyses. There was no association of genetically predicted serum calcium concentrations with all ischemic stroke (per 0.5 mg/dL [about 1 SD] increase in serum calcium: odds ratio 1.03, 95% CI 0.88-1.21) or with any subtype.ConclusionsThis study found that genetically higher serum magnesium concentrations are associated with a reduced risk of cardioembolic stroke but found no significant association of genetically higher serum calcium concentrations with any ischemic stroke subtype

Internationale Umfrage zur Behandlungspraktiken bei atopischer Dermatitis bei schwangeren und stillenden Frauen: Perspektiven von Ärzten

Hintergrund und Ziele Die systemische Behandlung von schwangeren/stillenden Patientinnen mit atopischer Dermatitis (AD) ist aufgrund begrenzter Sicherheitsdaten eine Herausforderung. Wir untersuchten die Behandlungspraktiken mit systemischen Therapeutika, einschließlich des in den Leitlinien empfohlenen Ciclosporin als erste systemische Wahl, sowie neue Therapien in dieser vulnerablen Bevölkerungsgruppe. Patienten und Methodik Die ADCARE-Initiative des Global Allergy and Asthma Excellence Network (GA2LEN) sammelte weltweit Daten von Ärzten, die schwangere Frauen mit AD behandeln. Die Ärzte füllten einen elektronischen Fragebogen zur Anwendung systemischer Therapeutika bei schwangeren/stillenden AD-Patientinnen aus. Ergebnisse 103 Ärzte aus 32 Ländern, vor allem Dermatologen (n = 48) und Allergologen (n = 43), nahmen an der Studie teil. Antihistaminika waren das am häufigsten in Erwägung gezogene systemische Arzneimittel während der Schwangerschaft/Stillzeit (n = 73/81, 90,1%), wobei für das erste Trimester weniger Ärzte den Einsatz systemischer Wirkstoffe in Erwägung zogen als für spätere Phasen der Schwangerschaft. Bei akuten Schüben wurden systemische Kortikosteroide (n = 34/80, 42,5%) bevorzugt, gefolgt von Biologika und Antihistaminika (jeweils n = 15/80, 18,8%). Obwohl das in den Leitlinien empfohlene Ciclosporin gelegentlich für AD während der Schwangerschaft in Betracht gezogen wird (n = 38/81, 46,9%), wurde es von den Ärzten nur selten als bevorzugtes Medikament angesehen (n = 1/80, 1,25%). Schlussfolgerungen Unsere Studie zeigt eine Diskrepanz zwischen den Leitlinienempfehlungen und den Verschreibungspraktiken und weist auf einen unbedeckten Bedarf an Wissen und der Anwendung der bestehenden Empfehlungen hin