نتایج جستجو برای: aqueous fraction af
تعداد نتایج: 252546 فیلتر نتایج به سال:
Objective(s) In the present study, the differences in the relaxant effects of aqueous, ethyl acetate and n-butanol fractions of Rosa damascena on tracheal smooth muscle of guinea pigs were examined. Materials and Methods The relaxant effects of three cumulative concentrations of each fraction (0.1, 0.2 and 0.4 g%) in comparison with saline and three cumulative concentrations of theophylline ...
در این گزارش ما اثر عصاره آبی (Aqeous fraction (AF)) جدا شده از جدوار با نام علمی Delphinium denudatum WALL.ex Hook.F.&Thoms بر(sustained repetitive firing) SRF نرون‌های پیرامیدال هیپوکامپ موش صحرایی را بررسی کردیم. بلوک SRF یکی از مکانیسم‌های پایه داروهای آنتی اپی‌لپتیک (AED) در سطح سلولی می‌باشد. اثر AF (mg/ml 6/0- 2/0) با یک داروی اولیه آزمایشی، فنی‌تویین (PHT) مقایسه شد. با استفاده از ...
BACKGROUND Prolonged atrial fibrillation (AF) results in electrical, structural, and gap-junctional remodeling. We examined the reversibility of the changes in (ultra)structure and gap junctions. METHODS AND RESULTS Four groups of goats were used: (1) sinus rhythm (SR), (2) 4 months' AF (4 mo AF), (3) 2 months' SR after 4 mo AF (2 mo post-AF), and (4) 4 months' SR after 4 mo AF (4 mo post-AF)...
OBJECTIVES This study is a meta-analysis of prospective cohort studies comparing the impact of cardiac resynchronization therapy (CRT) for patients in atrial fibrillation (AF) and sinus rhythm (SR). BACKGROUND Although close to one-third of advanced heart failure patients exhibit AF, the impact of CRT in this group remains unclear. METHODS Prospective cohort studies comparing patients in no...
The Ames assay was used to determine the ability of rat hepatocyte nuclei to metabolize 2-aminofluorene (AF) and 2-acetylaminofluorene (AAF) to mutagens. When hepato cyte nuclei and hepatic postmitochondrial fraction (59) were compared, it was found that the distribution of these metabolic activities was unique for each fraction. Nuclei produced approximately 1260% more revertants with AF than ...
aqueous (hydrophilic) and chloroform (lipophilic) extracts of nine medicinal plants currently used in traditional medicine, in egypt, to treat some gastrointestinal tract (git) disorders were tested for their gastro-protective effect against the incidence of peptic ulcer. indomethacin-induced ulcer in a rat model was used for this testing. mentha microphylla, brassica oleracea capitata (cabbage...
Atrial fibrillation (AF) and heart failure (HF) are 2 global epidemics of cardiovascular disease that often intersect, resulting in significant morbidity and mortality, with a reciprocal causal relationship existing between them.1 AF can exacerbate and, in some cases, cause HF. It has been associated with an adverse prognosis that has been partly attributed to the therapies used.2 It appears th...
BACKGROUND This study examined the impact of different ablation strategies on atrial fibrillation (AF) recurrence and quality of life in coexistent AF and atrial flutter (AFL). METHODS AND RESULTS Three-hundred sixty enrolled patients with documented AF and AFL were blinded and randomized to group 1, AF±AFL ablation (n=182), or group 2, AFL ablation only (n=178). AF recurrence was evaluated w...
BACKGROUND Restoring sinus rhythm in patients with heart failure (HF) and atrial fibrillation (AF) may improve left ventricular (LV) function and HF symptoms. We sought to compare the effect of a catheter ablation strategy with that of a medical rate control strategy in patients with persistent AF and HF. METHODS AND RESULTS Patients with persistent AF, symptomatic HF, and LV ejection fractio...
Sponges (phylum Porifera) have extensively been used as a model system to study cell-cell interaction on molecular level. Recently, we identified and cloned the putative aggregation receptor (AR) of the sponge Geodia cydonium, which interacts in a heterophilic way with the aggregation factor (AF) complex. In the present study, antibodies against this complex have been raised that abolish the ad...
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