The antharquinone-based chromophore of 11-hydroxyaklavinone is present in the structure of an anticancer agent, daunomycin. On the other hand, aklavinone is the parent aglycone of certain anthracycline antibiotics that possess anti-cancer activity too. The structures of aklavinone and its 11-hydroxy derivative have many -OH groups, and two keto groups which may take place in certain tautomeric ...

Dye sensitized solar cells have achieved more than 12% efficiency[1][2] since 1991 when first metal organicphotosensitizer was made by Gratzel based on ruthenium complex[3].Here we discussed the effect ofextended conjugation absorption spectra of photosensitizers[4]. The designed dye molecules are ondonor- π -acceptor model. dyes named as S1 [naphthalene-pyrrole-butanoic acid] and S2[naphthalen...

BACKGROUND Although high defibrillation threshold (DFT) is a major and unavoidable clinical problem after implantation of an implantable cardioverter defibrillator (ICD), little is known about the cause and management of a high DFT in patients with hypertrophic cardiomyopathy (HCM). The purpose of this study was to assess the predictors of a high DFT in patients with HCM. METHODS AND RESULTS ...

BACKGROUND Defibrillation threshold (DFT) testing at the time of implantable cardioverter defibrillator (ICD) implantation is widely used in clinical practice, but reliable data supporting its routine use are lacking. We undertook a meta-analysis to evaluate the efficacy of DFT testing compared to no DFT testing at the time of ICD implantation. METHODS We searched the MEDLINE and EMBASE datab...

objective: excessive weight in children is a major public health concern. the intake of refined carbohydrates, especially sugars and the prevalence of dental caries are well documented in the literature. the purpose of this study was to investigate the relationship between dental caries and bmi in elementary school children. materials and methods: the sampling technique used in the present stud...

Macrocycles up to 15 members with different heteroatoms (N, O, and S) and dendrimeric functionalized branches were assembled, resulting in unique "collective" supramolecular hosts with several active sites for transition metal ions complexation. The nature of the interactions between these kinds of systems and metal ions of the first transition series (Fe, Ni, Cu, Zn) was evaluated by calculati...