Anti-embolic and anti-oxidative effects of a novel (E)-4-amino-N '-(1-(7-hydroxy-2-oxo-2H-chromen-3-yl) ethylidene) benzohydrazide against isoproterenol and vitamin-K induced ischemic stroke
ARCHIVES OF PHYSIOLOGY AND BIOCHEMISTRY
Authors: Mnafgui, Kais; Khdhiri, Emna; Ghazouani, Lakhdar; Ncir, Marwa; Zaafouri, Zouhaier; Allouche, Noureddine; Elfeki, Abdelfattah; Ammar, Houcine; Abid, Souhir; Hajji, Raouf
Abstract
This study aimed to evaluate the cerebroprotective potential of a novel synthetic coumarin, (E)-4-amino-N '-(1-(7-hydroxy-2-oxo-2H-chromen-3-yl)ethylidene) benzohydrazide noted (HC) against a pharmaceutically induced ischemic stroke in experimental male Wistar rats. Animals were randomly allocated into four groups: control, Stroke, Stroke + Ace (acenocoumarol) and Stroke + HC-treated group for 7 days. Our results showed that stroke group evidenced atrial flutter, significant cardiac hypertrophy (+23%) and increase in plasma level of troponin-T, with disturbance in plasma ionic levels and rise in fibrinogen rate and oxidative damages in heart and brain. Moreover, the histological findings revealed myocardium necrosis, cardiac cavity thrombi and brain injury as compared to normal rats. However, HC-treatment significantly prevents the embolic process, improves cerebral damages and mitigates the oxidative stress markers in stroke rats. Overall, HC is endowed with a thrombolytic potential against MI and stroke in such severe conditions through an anti-vit K (AVK) mechanism.
EFFECT OF A HARVEST DATE AND CUTTING HEIGHT ON THE CONCENTRATIONS OF CAROTENOIDS AND TOCOPHEROLS IN VIRGINIA FANPETALS (SIDA HERMAPHRODITA) HERBAGE AND SILAGE
JOURNAL OF ELEMENTOLOGY
Authors: Antoszkiewicz, Zofia; Fijalkowska, Maja; Mazur-Kusnirek, Magdalena; Przemieniecki, Sebastian; Purwin, Cezary
Abstract
The aim of this study was to determine the effect of a harvest date and cutting height on the concentrations of carotenoids and tocopherols in Virginia fanpetals (Sida hermaphrodita Rusby L.) herbage and silage. First-cut Virginia fanpetals herbage was harvested in the budding stage, on 11, 18 and 25 June 2017. Herbage was cut at 15, 25, 35 and 45 cm above the ground, after which it was chopped and ensiled in vacutun bags. The content of beta-carotene and tocopherols (alpha-, beta-, gamma-, delta-) was determined in samples of fresh herbage and silage. Herbage cut at a height of 45 cm and silage made from herbage cut at a height of 25 cm had a higher (P <= 0,01) content of beta-carotene (113.93 and 44.90 mg kg(-1) DM, respectively), alpha-tocopherol (87.20 and 3.50 mg kg(-1) DM, respectively) and total tocopherols, and a higher value of vitamin E equivalent (Vit. EEq) than the remaining samples. Herbage harvested on the last date (25 June) and silage made from herbage harvested on the first date (11 June) were characterized by higher concentrations of beta-carotene (88.30 and 38.27 mg kg(-1) DM, respectively) and alpha-tocopherol (70.91 and 2.82 mg kg(-)1 DM, respectively) compared with samples harvested at the remaining dates, but the noted differences were not statistically significant. Positive interactions were found between cutting height (45 cm) vs. beta-carotene content and Vit. EEq value in herbage, and cutting height (25 cm) vs. alpha-tocopherol content and Vit. EEq value in silage. The content of beta-carotene and total tocopherols (alpha-, beta-, gamma-, delta) and a decrease in their concentrations during ensiling (in silage. average loss of beta-carotene and alpha-tocopherol reached 56% and 96%, respectively) were comparable with the values reported for grasses and legumes. The results of this study indicate that Sida herbage and silage can be a valuable source of livestock feed.