Backgound: The generation of oxidative stress can be referred to Aluminium toxic effect in animals and humans. This study aimed to evaluate the role of broccoli (Br) and beetroot (Be) extarcts as antioxidant that prevents oxidative stress that associated with aluminum toxicity. Materials and Methods: Fifty Wister female rats were grouped into five groups (each 10 rats): Group 1: control group, administered drinking water only. Group 2: (Neurogenerative) which were induced by oral administration of aluminum chloride (20 mg/kg b.w) daily for one month. Group 3: Rats given aluminum chloride were treated with Rivastigmine (Ri) (1 mg/kg b.w) as a reference drug daily for five weeks. Group 4: Rats given aluminum chloride were treated with beet root extract (50 mg/kg b.w) daily for six weeks. Group 5. Rats given aluminum chloride were treated with broccoli extract (50 mg/kg b.w) daily for five weeks. Results: (AlCl3) group showed a significant increase in Ach level (P<0.05) and a non-significant change in DOP and NE levels compared to control. (AlCl3+Be) was non-significant (P˂0.05) change in Ach, DOP and NE levels compared to (AlCl3) group and showed a significant (P<0.05) increase in Ach level compared to control. (AlCl3+Br) showed a significant (P<0.05) increase in NE level and non-significant (P˂0.05) change in Ach and DOP levels compared to (AlCl3) group. (AlCl3+Ri) showed a significant (P<0.05) increase in Ach, DOP and NE levels compared to (AlCl3) group. Also, showed a significant (P<0.05) increase in Ach and NE compared to control. Conclusion: Neuroprotective role of broccoli in the present study which may result from its antioxidant properties due to its bioactive content such as glucosinolate, isothiocyanate, Sulforaphane, and flavonoids. Therefore, Broccoli can have a favorable effect on neurotoxicity due to their antioxidant and anti-inflammatory properties.
Background: Oxidative stress is defined as imbalance between oxidant and antioxidant ratio, that lead to oxidative damage of biologically active molecules, finally lead to different disease and initiate carcinogenesis. The drug discovery using natural products as medicinal plants or marine organism still an important target for recent research. This study investigated anticancer activity of algae extract obtained from Red sea at Jeddah. Materials and Methods: Aqueousand methanol extracts ofDictyotaciliolata(DC) were tested on HCT-116 and HepG2 cell lines using WST-1. Aqueous extract (AEDC) and methanol extract (MEDC) at doses 0.05, 0.1, 0.5, 1 mg/ml and positive control 0.3% H2O2 at doses 0.5 mg/ml for 24,48 and 72 h (for two cell lines). Results: AEDC showed the mosteffective antitumor activity against HCT116 and HePG2, the IC50 dose for HCT116 cells was 0.05 mg/ml at 72 h, while for the HePG2 it was 0.01 mg/ml at 72 h. These results showed that HePG2cells was more sensitive to the AEDC. However, IC50 for MEDC were 0.01 mg/ml for HCT116 and 0.05 for HepG2 at 48 Hrs. The algae extracts contain sulfated polysaccharides and different pigments as chlorophylls, carotenoids and phycobiliproteins. These pigments were approved as biological active biomolecules that exert different biological activities as antioxidants, antitumor and rich source of micronutrients. In addition, AEDC or MEDC exert apoptotic activity by increase activity of caspase 3 and 9 in HepG2. Conclusıon: The antitumor effect of AEDC or MEDC is promising for development of chemotherapeutic agent as effective with no side effects.
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