The experiment was conducted to investigate the effects of dihydropyridine on laying performance and fat metabolism of laying hens. Five hundred and forty laying hens, 40 weeks old, were randomly allotted to three groups, each of which included four replicates of 45 hens. The groups were given a basal corn-soybean meal diet supplemented with 0, 150 mg/kg and 300 mg/kg dihydropyridine. Results s...

Isothiazolopyridines, pyridothiazines and pyridothiazepines are important compounds that possess valuable biological activities. This paper reports on the synthesis of these compounds using both conventional chemical methods and modern microwave techniques. 3-Bromo-6-hydroxy-4-methyl-2-thioxo-2,3-dihydropyridine-3-carboxamide, 5-arylazo-6-hydroxy-4-methyl-2-thioxo-1,2-dihydropyridine-3-carboxam...

Abstract: Amlodipine is a dihydropyridine calcium channel blocker mainly indicated in the treatment of essential hypertension and angina pectoris. Overdose blocker, results toxicity along with profound hypotension shock. Here, 20-year-old female patient was admitted to MICU complaints severe breathing difficulty, multiple episodes vomiting one day earlier. After chest x-ray, ECG, blood investig...

In the title compound, C(18)H(17)N(3), the dihedral angle between the dihydropyridine and phenyl rings is 72.57 (5)° and that between the dihydropyridine ring and malononitrile plane is 5.19 (20)°. The C-C bond lengths in the pyridine ring are considerably shorter than those of normal single bonds, indicating that electrons on the dihydropyridine ring, including the non-bonding electrons of the...

Various 1and 2-substituted and 1,2-fused 1,4-dihydropyridine-5-phosphonate derivatives were designed and synthesized as analogues of 1,4-dihydropyridine-3,5-dicarboxylate, and their antihypertensive activities were examined. Several compounds proved to be equal or superior to nifedipine in lowering blood pressure in normotensive and spontaneously hypertensive rats. Among these compounds, 1-subs...

The dihydropyridine Ca2+ antagonist drugs used in the therapy of cardiovacular disorders inhibit L-type Ca2+ channels by binding to a single high affinity site. Photoaffinity labeling and analysis of mutant Ca2+ channels implicate the IIIS6 and IVS6 segments in high affinity binding. The amino acid residues that are required for high affinity binding of dihydropyridine Ca2+ channel antagonists ...

Aim. Dihydropyridine calcium channel blockers (CCB) are widely preferred for the treatment of hypertension for their efficacy, metabolic neutrality and low side effect profile. However pedal edema formation limits their usage. The aim of the present study is to evaluate the incidence of pedal edema formation with a different dihydropyridine CCB in hypertensive patients who developed pedal edema...

Muscular dysgenesis (mdg) is a lethal autosomal, recessive mutation of mice. Skeletal muscle from dysgenic mice is paralyzed due to the failure of excitation-contraction (E-C) coupling. Considerable evidence indicates that this failure results from the absence of a specific gene product, the alpha 1 subunit of the skeletal muscle receptor for dihydropyridine calcium channel modifiers. This dihy...

Antibodies against the subunits of the dihydropyridine-sensitive L-type calcium channel of skeletal muscle were tested for their ability to immunoprecipitate the high affinity (ICd = 0.13 nM) "'I-w-conotoxin GVIA receptor from rabbit brain membranes. Monoclonal antibody VD21 against the B subunit of the dihydropyridine receptor from skeletal muscle specifically immunoprecipitated up to 86% of t...

Ten synthetic dihydropyridine analogues were investigated for their ability to reverse drug resistance in a multidrug-resistant human carcinoma cell line, KB-Cl. Four dihydropyridine analogues completely reversed the resistance, three lowered the resistance, and three had little effect. The radioactive photoactive dihydropyridine calcium channel blocker, [3H]azidopine, photolabels P-glycoprotei...