Photocrosslinkable starch cinnamyl ethers as bioinspired bio-based polymers.

A novel starch-based ether bearing cinnamyl functionalities, conferring photo-crosslinking properties, is synthesised by reaction with cinnamyl chloride in the presence of sodium hydroxide. Natural yuca was selected as a sustainable source of starch. Three different molar equivalents of reagents are used, affording starch-cinnamyl ethers with different degrees of substitution, ranging from 0.

Singlet Oxygen Photocatalytic Generation by Silanized TiO Nanoparticles.

A commercial TiO sample, used as received or hydrothermally treated to increase surface hydroxylation, has been functionalized by surface modification with hexadecyltrimethoxysilane. The anchoring of the silane has been characterized by means of FTIR and solid-state NMR spectroscopies, and the grafting density was determined by thermogravimetric and N physisorption analyses. The silane moieties induce a partial decrease of the shielding of the valence electrons of the Ti ions at the surface, and a local modification of their crystal field, as demonstrated by XPS and UV/Vis spectroscopy, respectively.

Combined aerobic and resistance training improves microcirculation in metabolic syndrome.

Background: Exercise intervention improves macrovascular function in metabolic syndrome (MeS) patients, but few studies have evaluated the effect of exercise on microcirculatory dysfunction, which plays a key role in the development of MeS and its correlated organ damage. We carried out this intervention study to evaluate the influence of an aerobic and resistance training on skin microvascular reactivity in MeS patients.

Methods: Postocclusive reactive hyperemia (PORH) of the forearm skin was evaluated, by laser-Doppler flowmetry, before and after a 12-week program of aerobic and resistance training in 15 MeS patients referring to our Lipid Metabolism Outpatients Clinic, together with anthropometric, fitness and metabolic parameters; 15 matched MeS patients who did not exercise, served as a control group.

Closed hemorrhoidectomy with linear stapler: a consecutive series of 300 patients.

Background: Hemorrhoidectomy is one of the most commonly performed anorectal operations. The aim of this study was to evaluate the safety and the efficacy of a new technique for sutured closed hemorroidectomy with linear stapler in a consecutive series of 300 patients.

Patients And Methods: Between January 2006 and December 2009, 300 patients (117 male, 183 female) (mean age, 52 (range 21-85) years) with grade III and IV hemorrhoids were treated with our modified technique with linear stapler with 6 cm vascular recharge.

Analysis of gene expression in early-stage ovarian cancer.

Purpose: Gene expression profile was analyzed in 68 stage I and 15 borderline ovarian cancers to determine if different clinical features of stage I ovarian cancer such as histotype, grade, and survival are related to differential gene expression.

Experimental Design: Tumors were obtained directly at surgery and immediately frozen in liquid nitrogen until analysis. Glass arrays containing 16,000 genes were used in a dual-color assay labeling protocol.

Expression levels of p53 and p73 isoforms in stage I and stage III ovarian cancer.

The p53 gene has been investigated for its role in epithelial ovarian cancer but data collected until now are contradictory. The evidence that p53 belongs with p63 and p73 to a family of transcription factors re-opened interest in this gene family. Here, we used quantitative real time RT-PCR to determine expression levels of TAp53, TAp73 and their N-terminal splice variants in a cohort of 169 ovarian cancer patients with stage I and stage III disease.