@article {621, title = {Photoactivated chlorophyllin and acetylcholinesterase/ cytochrome oxidase activity in Fasciola gigantica cercaria larvae}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {May 2018}, pages = {768-772}, type = {Original Article}, chapter = {768}, abstract = {

Objective: The effect of chlorophyllin (CHL), CHL + freeze dried cow urine (FCU) and FCU on acetylcholinesterase (AChE) and cytochrome oxidase activity in the nervous tissue of the host snail Lymnaea acuminata, and parasitic cercaria larvae of Fasciola gigantica were studied. Methods: Whole cercaria larvae and snail nervous tissue was homogenized and supernatant was used as an enzyme source. Enzyme activity was measured in 10-mm path length cuvette using incubation mixtures and change in optical density was recorded. Results: Sublethal 4 h LC50 40\% and 80\% of these formulations in sunlight and laboratory conditions caused no significant change in AChE activity in the nervous tissue of host snail. It was noted that sublethal in vivo 8 h exposure to 40\% and 80\% of 4 h LC50 of single and binary combination of CHL+FCU, CHL and FCU significantly altered the AChE and cytochrome oxidase activity in the cercaria larvae. Binary combinations of CHL+FCU in sunlight were more effective in inhibiting both the enzymes. Conclusion: The present study reported that enzymes AChE and cytochrome oxidase were inhibited by chlorophyllin formulations and thus causing the larval death inside the snail body without affecting the snail itself which is an important bioindicator of aquatic ecosytem.

}, keywords = {Acetylcholinesterase, Cercaria larva, Cytochrome oxidase, Fasciola Gigantica, Lymnaea acuminata, Nervous tissue}, doi = {10.5530/pj.2018.4.129}, url = {http://fulltxt.org/article/667}, author = {Dinesh Kumar Singh and Divya jyoti Singh} } @article {364, title = {Chlorophyllin Treatment Against the Snail Lymnaea acuminata: A new tool in Fasciolosis Control}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {July 2017}, pages = {594-598}, type = {Original Article}, chapter = {594}, abstract = {

Objective: To observe the toxicity of chlorophyllin against Lymnaea acuminata to control fasciolosis caused by liver fluke fasciola gigantica, very prominent in eastern region of Uttar Pradesh. Materials and Methods: Ten snails Lymnaea acuminata were placed in a glass aquarium containing 3 L of dechlorinated tap water. These snails were treated with different concentrations of chlorophyllin. Chlorophyll was extracted from spinach with the help of macerated leaves and kept for 2 h in 100\% ethanol at 55\ºC. Results: The results of the experiment showed that the photodynamically active chlorophyllin, at low concentration was able to kill the snails under exposure of solar radiation in summer season instead of winter season. In winter, extracted chlorophyllin toxicity against L. acuminata in sunlight (96 h LC50 91.82 mg L-1) /laboratory condition (96 h LC50 921.93 mg L-1) was less than pure chlorophyllin in sunlight (96 h LC50 12.05 mg L-1) /laboratory condition (96 h LC5019.22 mg L-1), respectively. In summer, pure chlorophyllin was more toxic in sunlight (96 h LC50 3.90 mg L-1) than laboratory condition (96 h LC50 7.18 mg L-1). Pure chlorophyllin is more than five times toxic than synthetic molluscicides. Treatment of chlorophyllin caused no toxic effect against the fish (Colisa fasciatus). The result presented in this paper is found very beneficial and ecologically safe, as a photodynamic substance chlorophyllin, which found in every green plant. Conclusion: Phytotherapy of snails by photodynamic water soluble chlorophyllin to control fasciolosis can be used as potent molluscicides with low cost and easily biodegradable.

}, keywords = {Chlorophyllin, Fasciola Gigantica, Fasciolosis, Lymnaea acuminata, Photodynamic Reaction., Plant Molluscicide}, doi = {10.5530/pj.2017.5.94}, url = {/files/pj-9-5/10.5530pj.2017.5.94/index.html}, author = {Kavita Singh and D.K. Singh and Vinay Kumar Singh} } @article {243, title = {Inhibition Kinetics of Acetylcholinesterase and Phosphatases by the Active Constituents of Terminalia arjuna and Tamarindus indica in the Cerebral Ganglion of Lymnaea acuminata}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {February 2017}, pages = {148-156}, type = {Original Article}, chapter = {148}, abstract = {

Introduction: Paper demonstrates effect of the active molluscicidal components arjunolic acid (Terminalia arjuna bark) and procynadine (Tamarindus indica seed) on the activity of acetylcholinesterase (AChE) and phosphatases (ACP/ALP) in the cerebral ganglion of snail Lymnaea acuminata. Materials and Methods: Kinetics of AChE/ACP/ ALP inhibition in the cerebral ganglion of snail Lymnaea acuminata was studied via in vivo (40\% and 80\% of 96 h LC50) and in vitro treatments (0.3 g to 7.0 g) of the column purified fractions, arjunolic acid and procynadine. Results: In vivo exposure of procynadine and arjunolic acid significantly inhibit acetylcholinesterase (AChE), acid phosphatase (ACP) and alkaline phosphatase (ALP) activities in the cerebral ganglion of L. acuminata exposed to 80\% of 96h LC50. In in vitro treatment maximum inhibition in AChE/ACP/ALP activities in the cerebral ganglion of snail were noted when exposed to 7.0 g of arjunolic acid and 0.9 g of procynadine. Column purified fraction of T. arjuna bark and T. indica seed caused non-competitive and uncompetitive inhibition of AChE activity, respectively. Column purified fraction and arjunolic acid of T. arjuna bark caused uncompetitive inhibition of ACP while column purified fraction and procynadine of T. indica seed caused competitive inhibition. Competitivenon- competitive inhibition of ALP activity in the cerebral ganglion of L. acuminata was observed after treatment of column purified active components of both plants. Conclusions: The molluscicidal activity of T. arjuna bark (arjunolic acid) and T. indica seed (procynadine) against snail L. acuminata is due to the inhibition of AChE/ACP/ ALP. Their inhibition kinetics against AChE/ACP/ALP, were different in cerebral ganglion of snail.

}, keywords = {Arjunolic acid, Enzymes, Lymnaea acuminata, Procynadine, Tamarindus indica, Terminalia arjuna}, doi = {10.5530/pj.2017.2.25}, url = {http://phcogj.com/fulltext/292}, author = {Neelam Soni and Dinesh Kumar Singh and Vinay Kumar Singh} }