On Reversal of Geotropism in Asterina

Prevention by polyhydroxysteroids and saponins of Asterina pectinifera of the desquamation of stratum corneum cells.

Two polyhydroxysteroids and three steroidal saponins (pectiniosides A, B and C) were isolated as bioactive substances from Asterina pectinifera. These compounds inhibited the release of guinea-pig skin stratum corneum cells by 48-67% (control, 0%) at 2 mg/ml. It is suggested that the bioactivity of these compounds is connected with the remedial and preventive effects of an aqueous extract of A....

Methanolic Extract of Asterina pectinifera inhibits LPS-Induced Inflammatory Mediators in Murine Macrophage

This study aimed to elucidate anti-inflammatory activities from extracts of Asterina pectinifera on nitric oxide (NO) production, TNF-α and IL-6 release in lipopolysaccharide (LPS) -stimulated murine macrophage cell, RAW264.7. We prepared the methanolic extracts (60-MAP, 70-MAP, 80-MAP and 90-MAP) , aqueous extract (W-AP) and functional bioactive compound fraction (He-AP and EA-AP) from Asterin...

Role of adenosine receptors and protein phosphatases in the reversal of pentylenetetrazol-induced potentiation phenomenon by theta pulse stimulation in the CA1 region of rat hippocampal slices

The effect of theta pulse stimulation (TPS) on pentylenetetrazol (PTZ)-induced long-term potentiation of population spikes (PS) was studied in the hippocampal CA1 in vitro. A transient PTZ application produced a long-lasting enhancement of PS amplitude. A 3-min episode of TPS delivered at a higher intensity produced complete reversal of the PTZ potentiation when delivered during the last minute...

Role of adenosine receptors and protein phosphatases in the reversal of pentylenetetrazol-induced potentiation phenomenon by theta pulse stimulation in the CA1 region of rat hippocampal slices

The effect of theta pulse stimulation (TPS) on pentylenetetrazol (PTZ)-induced long-term potentiation of population spikes (PS) was studied in the hippocampal CA1 in vitro. A transient PTZ application produced a long-lasting enhancement of PS amplitude. A 3-min episode of TPS delivered at a higher intensity produced complete reversal of the PTZ potentiation when delivered during the last minute...

Short communication:The effect of gokshura (Tribulus terrestris) and nettle root (Urtica dioica) extracts on growth rate and sex reversal in convict cichlid (Cichlasoma nigrofasciatum)