312 research outputs found
Method of refining 2,2-isopropylidenebis-3,5- dibromophenylene-4-oxydiethanol
A method of refining 2,2-isopropylidenebis-3,5-dibromophenylene-4-oxydiethanol is described which is characterized by recrystallization of 2,2-isopropylidenebis-3,5-dibromophenylene-4-oxydiethanol using one or more aromatic hydrocarbons such as benzene, xylene, toluene, ethylbenzene or pseudocumene
Discontinuation of infliximab after attaining low disease activity in patients with rheumatoid arthritis: RRR (remission induction by Remicade in RA) study
Cartan subalgebras and the UCT problem, II
We show that outer approximately represenbtable actions of a finite cyclic
group on UCT Kirchberg algebras satisfy a certain quasi-freeness type property
if the corresponding crossed products satisfy the UCT and absorb a suitable UHF
algebra tensorially. More concretely, we prove that for such an action there
exists an inverse semigroup of homogeneous partial isometries that generates
the ambient C*-algebra and whose idempotent semilattice generates a Cartan
subalgebra. We prove a similar result for actions of finite cyclic groups with
the Rokhlin property on UCT Kirchberg algebras absorbing a suitable UHF
algebra. These results rely on a new construction of Cartan subalgebras in
certain inductive limits of Cartan pairs. We also provide a characterisation of
the UCT problem in terms of finite order automorphisms, Cartan subalgebras and
inverse semigroups of partial isometries of the Cuntz algebra .
This generalizes earlier work of the authors.Comment: minor revisions; final version, accepted for publication in Math.
Ann.; 26 page
High incidence of silent myocardial ischemia in elderly patients with non insulin-dependent diabetes mellitus
Celem badania była ocena częstości występowania
niemego niedokrwienia mięśnia sercowego u bezobjawowych
chorych na cukrzycę w podeszłym wieku
(> 60 lat). Wstępnym etapem badania była maksymalna
próba wysiłkowa na bieżni ruchomej. Spośród
140 chorych u 54 (38,6%) nie udało się osiągnąć
diagnostycznego poziomu wysiłku podczas
próby lub nie można jej było wykonać z innych przyczyn,
u 39 z 86 chorych (45,3%) uzyskano pozytywny
wynik próby wysiłkowej. W drugim etapie tej pracy
u 93 chorych z dodatnią próbą wysiłkową, ale
u których nie można było uzyskać maksymalnego
wysiłku, wykonano scyntygrafię z użyciem talu w
teście z dipirydamolem. U 39 z 93 chorych (41,9%),
u których wystąpiły zaburzenia perfuzji, rozpoznano
nieme niedokrwienie mięśnia sercowego. U 18
chorych z niemym niedokrwieniem mięśnia sercowego,
którzy wyrazili zgodę, wykonano koronarografię.
U 17 spośród 18 chorych (94,4%) stwierdzono
znacznego stopnia zwężenia naczyń wieńcowych,
co potwierdziło duże znaczenie predykcyjne tej metody.
Podsumowując, stwierdzono, że częstość niemego niemego
niedokrwienia mięśnia sercowego u chorych
na cukrzycę typu 2 w podeszłym wieku jest bardzo
wysoka (26,3%). Te wyniki sugerują, że wczesna
intensywna diagnostyka zmian w naczyniach wieńcowych
może się okazać niezbędna jako uzupełnienie
rutynowego postępowania w tej grupie chorych.The present study was designed reveal the incidence
of silent myocardial ischemia in asymptomatic
elderly non-insulin-dependent diabetic (NIDDM) patients
(aged over 60 years). As a first step screening,
maximal treadmill exercise test was performed. Of
140 patients studied, 54 (38.6%) were unable or not
expected to achieve diagnostic levels of exercise
during treadmill testing. A positive exercise test was
noted in 39 of 86 (45.3%) subjects. As a second step
examination, dipyridamole thallium scintigraphy
was performed for 93 subjects who exhibited a positive
exercise test and could not perform a maximal
exercise test. Abnormal perfusion pattern was
found in 39 of 93 (41.9%), who were finally considered to have a silent myocardial ischemia. Coronary
angiography was performed in 18 subjects with
diagnosis of silent myocardial ischemia, who gave
their consent. Significant coronary artery stenosis
was in fact found in 17 of 18 (94.4%) subjects studied,
confirming a very high positive predictive value
of this diagnostic procedure. In conclusion, elderly
NIDDM patients (aged over 60 years) had an
extremely high prevalence (estimated 26.3%) of silent
myocardial ischemia. This evidence suggests that
early and intensive detection may be needed as
a part of routine care for this grou
Confirmation of Multiple Risk Loci and Genetic Impacts by a Genome-Wide Association Study of Type 2 Diabetes in the Japanese Population
Generalized Toda Theory from Six Dimensions and the Conifold
Recently, a physical derivation of the Alday-Gaiotto-Tachikawa correspondence
has been put forward. A crucial role is played by the complex Chern-Simons
theory arising in the 3d-3d correspondence, whose boundary modes lead to Toda
theory on a Riemann surface. We explore several features of this derivation and
subsequently argue that it can be extended to a generalization of the AGT
correspondence. The latter involves codimension two defects in six dimensions
that wrap the Riemann surface. We use a purely geometrical description of these
defects and find that the generalized AGT setup can be modeled in a pole region
using generalized conifolds. Furthermore, we argue that the ordinary conifold
clarifies several features of the derivation of the original AGT
correspondence.Comment: 27+2 pages, 3 figure
Localization of N=4 Superconformal Field Theory on S^1 x S^3 and Index
We provide the geometrical meaning of the superconformal index.
With this interpretation, the superconformal index can be realized
as the partition function on a Scherk-Schwarz deformed background. We apply the
localization method in TQFT to compute the deformed partition function since
the deformed action can be written as a -exact form. The
critical points of the deformed action turn out to be the space of flat
connections which are, in fact, zero modes of the gauge field. The one-loop
evaluation over the space of flat connections reduces to the matrix integral by
which the superconformal index is expressed.Comment: 42+1 pages, 2 figures, JHEP style: v1.2.3 minor corrections, v4 major
revision, conclusions essentially unchanged, v5 published versio
Atrazine-Induced Aromatase Expression Is SF-1 Dependent: Implications for Endocrine Disruption in Wildlife and Reproductive Cancers in Humans
BACKGROUND: Atrazine is a potent endocrine disruptor that increases aromatase expression in some human cancer cell lines. The mechanism involves the inhibition of phosphodiesterase and subsequent elevation of cAMP. METHODS: We compared steroidogenic factor 1 (SF-1) expression in atrazine responsive and non-responsive cell lines and transfected SF-1 into nonresponsive cell lines to assess SF-1’s role in atrazine-induced aromatase. We used a luciferase reporter driven by the SF-1–dependent aromatase promoter (ArPII) to examine activation of this promoter by atrazine and the related simazine. We mutated the SF-1 binding site to confirm the role of SF-1. We also examined effects of 55 other chemicals. Finally, we examined the ability of atrazine and simazine to bind to SF-1 and enhance SF-1 binding to ArPII. RESULTS: Atrazine-responsive adrenal carcinoma cells (H295R) expressed 54 times more SF-1 than nonresponsive ovarian granulosa KGN cells. Exogenous SF-1 conveyed atrazine-responsiveness to otherwise nonresponsive KGN and NIH/3T3 cells. Atrazine induced binding of SF-1 to chromatin and mutation of the SF-1 binding site in ArPII eliminated SF-1 binding and atrazine-responsiveness in H295R cells. Out of 55 chemicals examined, only atrazine, simazine, and benzopyrene induced luciferase via ArPII. Atrazine bound directly to SF-1, showing that atrazine is a ligand for this “orphan” receptor. CONCLUSION: The current findings are consistent with atrazine’s endocrine-disrupting effects in fish, amphibians, and reptiles; the induction of mammary and prostate cancer in laboratory rodents; and correlations between atrazine and similar reproductive cancers in humans. This study highlights the importance of atrazine as a risk factor in endocrine disruption in wildlife and reproductive cancers in laboratory rodents and humans
Coadministration of tacrolimus with corticosteroid accelerates recovery in refractory patients with polymyositis/ dermatomyositis: a retrospective study
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