11 rezultatov
Guided by bioisosterism and pharmacokinetic parameters, we designed and synthesized a series of novel benzamide derivatives. Preliminary in vitro studies indicated that compounds 10b and 10j show significant inhibitory bioactivity in HepG2 cells (IC50 values of 0.12 and 0.13 μM, respectively).
p-Hydroxy-N-(2-diethylaminoethyl)benzamide (2), the p-hydroxy isostere of procainamide (1), shows antiarrhythmic activity against acontine-induced atrial arrhythmia and lowers mean arterial blood pressure after iv infusion in dogs. In isolated canine Purkinje fibers, phenolic 2 in a bath
Polymorphonuclear leukocytes (PMNLs), nitric oxide (NO), calcium, and free radicals play an important role in hypoxia/ischemia and reoxygenation injury. In the present study, NO donors, sodium nitroprusside (SNP), and diethylamine-NO (DEA-NO) at low concentrations (10 and 100 nmol/L) potentiated,
BACKGROUND
Histone deacetylase (HDAC) inhibitors are efficacious in models of hypertension-induced left ventricular heart failure. The consequences of HDAC inhibition in the context of pulmonary hypertension with associated right ventricular cardiac remodeling are poorly understood.
OBJECTIVE
This
Phosphodiesterase type 4 (PDE4) is involved in the hydrolysis of cAMP in pulmonary vascular smooth muscle (PA-SMC) and immune inflammatory cells. Given that intracellular cAMP accumulation inhibits contraction and growth of PA-SMCs as well as inflammatory cell functions, we investigated the effects
Pyrazinamide, the pyrazine analogue of nicotinamide, has been evaluated for its ability to modify the radiation response of hypoxic cells both in vivo and in vitro. Results obtained with three different murine tumour systems EMT6, LLC and SCCVII showed that pyrazinamide at a dose of 0.5 mg g-1 i.p.
We have recently shown that 3-acetamidobenzamide (3-AAB), a highly effective inhibitor of ADP-ribosyl transferase (ADPRT), can act as a post-irradiation (electrons) sensitizer on the mouse lymphoma cell lines L5178Y R and S. We have now shown that this compound sensitizes human derived skin
Oxygen deficient hypoxic cells, which are resistant to sparsely ionising radiation, have now been identified in most animal and some human solid tumours and will influence the response of those tumours to radiation treatment. This hypoxia can be either chronic, arising from an oxygen diffusion
Glucocorticoids (GCs) are highly pathogenic if secreted in excess. Recent work shows that such deleterious consequences include damage to the hippocampus, a principal neural target site for GCs. Excessive chronic exposure to GCs accelerates senescent hippocampal neuron loss, while the presence of
In order to improve the treatment of advanced H&N cancer we must consider to adopt new strategies as: new/better cytostatic agents; new combinations of present cytostatic agents and; potentiation of radiotherapy and cytostatic agents by biochemical modulation, which we define as potentiation of
Chemical modulation of tumor blood flow has until recently received relatively little attention as a therapeutic tool. Developments in the last few years, both in technology and in drug development, have changed this perspective. Fluorescence activated cell sorting techniques have provided evidence