AIMS The aim of this study was to investigate whether the sera from chronic chagasic patients (CChPs) with beta-1 adrenergic activity (Ab-beta) can modulate ventricular repolarization. Beta-adrenergic activity has been described in CChP. It increases the L-type calcium current and heart rate in isolated hearts, but its effects on ventricular repolarization has not been described. METHODS AND ...

We derive polynomial identities of arbitrary degree n for syzygies degrees numerical semigroups $$S_m\!=\!\langle d_1,\ldots ,d_m\rangle $$ and show that $$n\ge m$$ they contain higher genera $$G_r\!=\!\sum _{s\in {\mathbb Z}_>\!\!\setminus S_m}s^ r$$ $$S_m$$ . find a number $$g_m\!=\!B_m-m+1$$ algebraically independent $$G_r$$ equations, related any $$g_m+1$$ genera, where $$B_m\!=\! \sum _{k=...

PURPOSE To study the presence of muscarinic and alpha- and beta-adrenergic receptors in a normal human conjunctival epithelial (IOBA-NHC) cell line. METHODS Neurotransmitter receptors were determined in IOBA-NHC cells by flow cytometry, immunofluorescence, and Western blot analysis. Antibodies to M(1)-, M(2)-, and M(3)-muscarinic and to alpha(1A)-, alpha(1B)-, alpha(1D)-, alpha(2A)-, alpha(2B...

Abstract Given a family $\mathcal{F}$ of bipartite graphs, the Zarankiewicz number $z(m,n,\mathcal{F})$ is maximum edges in an $m$ by $n$ graph $G$ that does not contain any member as subgraph (such called -free ). For $1\leq \beta \lt \alpha 2$ , graphs $(\alpha,\beta )$ - smooth if for some $\rho \gt 0$ and every $m\leq n$ $z(m,n,\mathcal{F})=\rho m n^{\alpha -1}+O(n^\beta . Motivated their w...

To understand the molecular mechanism of action of the novel class of diuretic agents, the antidiuretic hormone antagonists ["aquaretics" (specific water-losing activity as caused by vasopressin antagonists, as distinguished from the saluresis of conventional diuretics)], in the dog studies were made of the properties of the vasopressin-responsive adenylate cyclase system and the antagonist pot...

In this paper, we deal with the following quasilinear elliptic system involving gradient terms in form: $$ \begin{cases} \Delta_p u= v^m| \nabla u |^\alpha & \text{in}\quad \Omega\\ v= v^\beta| |^q \Omega, \end{cases} where $\Omega\subset\mathbb{R}^N\ (N\geq 1)$ is either equal to $ \mathbb{R}^N or a ball $B_R$ centered at origin and having radius $R>0$, $1 < p \infty$, $m,q > 0$, $\alpha\geq $...

PURPOSE To examine the effect of beta-alanine only and beta-alanine with sodium bicarbonate supplementation on 2,000-m rowing performance. METHODS Twenty well-trained rowers (age 23 ± 4 y; height 1.85 ± 0.08 m; body mass 82.5 ± 8.9 kg) were assigned to either a placebo or beta-alanine (6.4 g · d(-1) for 4 weeks) group. A 2,000-m rowing time trial (TT) was performed before supplementation (Bas...

beta-Lactamases are the main cause of bacterial resistance to penicillins and cephalosporins. Class A beta-lactamases, the largest group of beta-lactamases, have been found in many bacterial strains, including mycobacteria, for which no beta-lactamase structure has been previously reported. The crystal structure of the class A beta-lactamase from Mycobacterium fortuitum (MFO) has been solved at...

The role of integrins in leukocyte apoptosis is unclear, some studies suggest enhancement, others inhibition. We have found that beta(2)-integrin engagement on neutrophils can either inhibit or enhance apoptosis depending on the activation state of the integrin and the presence of proapoptotic stimuli. Both clustering and activation of alpha(M)beta(2) delays spontaneous, or unstimulated, apopto...

Glucans were isolated from the cell wall of the yeast (Y) and mycelial (M) forms of Paracoccidioides brasiliensis. The alkali-soluble glucan of the Y form had properties of alpha-1,3-glucan. The alkali-insoluble glucan of the M form was identified as a beta-glucan which contains a beta-(1 --> 3)-glycosidic linkage by infrared absorption spectrum, by effect of beta-1,3-glucanase, and by partial ...