Background: Depression is an important psychological disorder because it a common mental illness that leads to morbidity and suicide. Although appropriate antidepressant drugs exist, they usually have unpleasant side effects delayed onset. Objectives: Introducing new compounds such as medicinal plants oceanic living organisms alga appropriate. Here the depressive-like of Padina australis Hauck ...

Four polyphenols were isolated and purified from a brown alga Eisenia arborea. These phlorotannin compounds showed strong radical scavenging some enzyme inhibitory activities. All of the antioxidative, acetylcholinesterase butyrylcholinesterase inhibitory, tyrosinase inhbibitory activities at 100 μg/mL. Dieckol PFF inhibited butyrylcholinesterase, new target for treatment Alzheimer’s disease, v...

the polysaccharides of acanthophora spicifera and cystoseira trinode were isolated and theircomponents identified using different chemical and spectral techniques. their effects were evaluated for thefirst time on hyperlipidemic rats. atorvastatin ca (lipitor®) was used as a reference drug. results revealedthat the polysaccharides isolated were of sulfate type. acanthophora spicifera lowered th...

The marine environment is an extraordinary reservoir of bioactive natural products, many of which exhibit chemical and structural features not found in terrestrial natural products. In this regard, the aim of this study was to investigate the possible antinociceptive and anti-inflammatory activities of a crude methanolic extract of the red alga Bryothamnion triquetrum (BT-MeOH) in murine models...

The rearing of snails, intermediate hosts of Schistosoma haematobium, S. intercalatum, S. bovis and Fasciola hepatica is the first step to maintain the life cycle of these parasites in laboratory in order to have biological material for the different studies, namely on the systematic biology and immunodiagnostic of schistosomosis and fasciolosis. According to the traditional method, the alga Os...

Cell-free extracts of the unicellular red alga Cyanidium caldarium catalyze the transformation of biliverdin to a product indistinguishable from phycocyanobilin, the free bilin derived from phycocyanin by methanolysis. Crude cell-free extract requires biliverdin as the only substrate, but after removal of low molecular weight components by gel filtration, the reaction shows an additional requir...

Two new diterpenoids, pachydictyol B (1a/1b) and C (2), were isolated from the dichloromethane extract of the marine brown alga, Dictyota dichotoma, collected from the Red Sea coast of Egypt, along with the known metabolites, pachydictyol A (3a), dictyol E (4), cis-africanan-1α-ol (5a), fucosterol (6), tetrahydrothiophen-1,1-dioxide and poly-β-hydroxybutyric acid. GC-MS analysis of the nonpolar...

Although many fungicides are registered for use to control powdery mildew on cucurbits, management of resistance to fungicides in pathogen populations still remains a major challenge. Two biopesticides Regalia SC and HMO 736 were evaluated in the greenhouse and field for their efficacy against powdery mildew in squash. In greenhouses, Regalia SC alone significantly (P < 0.05) reduced powdery mi...

The conversion of α-synuclein from its natively unfolded and α-helical tetrameric forms to an amyloid conformation is central to the emergence of Parkinson's disease. Therefore, prevention of this conversion may offer an effective way of avoiding the onset of this disease or delaying its progress. At different concentrations, an aqueous extract from the edible winged kelp (Alaria esculenta), wa...