Abstract
Background: Plant lectins have shown promising neuropharmacological activities in animal models.
Objective: This study evaluated the effect of Dioclea altissima seed lectin (DAL) on adult zebrafish behavior.
Method: Zebrafish (n=6/group) were treated (i.p.; 20 μL) with DAL (0.025; 0.05 or 0.1 mg/mL), vehicle or diazepam (DZP) and submitted to several tests (open field, light/dark preference or novel tank). Flumazenil, pizotifen or granisetron were administered 15 min before DAL (0.05 mg/mL), and the animals were evaluated on light/dark preference test. It was also verified whether the DAL effect depended on its structural integrity and ability to interact with carbohydrates.
Results: DAL decreased the locomotor activity of adult zebrafish (0.025; 0.05 or 0.1 mg/mL), increased the time spent in the upper region of the aquarium (0.025 mg/mL), and decreased the latency time of adult zebrafish to enter the upper region on the novel tank test. DAL (0.05 mg/mL) also increased their permanence in the light zone of the light/dark preference test. The effect of DAL was dependent on carbohydrate interaction and protein structure integrity and was prevented by pizotifen, granizetron and flumazenil.
Conclusion: DAL was found to have an anxiolytic-like effect mediated by the 5-HT and GABAergic receptors.
Keywords: Dioclea altissima, lectin, neurobehavioral, anxiolytic-like, 5-HT receptors, GABAergic receptors.
Graphical Abstract
[http://dx.doi.org/10.1016/0887-6185(91)90030-W]
[http://dx.doi.org/10.1016/j.physbeh.2014.05.032] [PMID: 24910138]
[http://dx.doi.org/10.1097/00004583-199508000-00007] [PMID: 7665455]
[http://dx.doi.org/10.1016/j.physbeh.2014.05.006] [PMID: 24832050]
[PMID: 18041868]
[http://dx.doi.org/10.4034/RBCS.2010.14.02.13]
[http://dx.doi.org/10.1046/j.1601-183X.2003.00053.x] [PMID: 15005714]
[http://dx.doi.org/10.1089/zeb.2006.3.227] [PMID: 18248263]
[http://dx.doi.org/10.1016/j.pnpbp.2017.11.014] [PMID: 29154800]
[http://dx.doi.org/10.1101/gr.144700] [PMID: 10984453]
[http://dx.doi.org/10.1089/zeb.2015.1183] [PMID: 27045850]
[http://dx.doi.org/10.1016/j.pbb.2011.04.021] [PMID: 21570997]
[http://dx.doi.org/10.1016/j.neuropharm.2013.03.006] [PMID: 23541719]
[http://dx.doi.org/10.18561/2179-5746/biotaamazonia.v4n1p87-93]
[http://dx.doi.org/10.1007/978-1-4419-7877-6_13] [PMID: 21618113]
[http://dx.doi.org/10.2174/1389203013381152] [PMID: 12370020]
[http://dx.doi.org/10.1016/j.pbb.2006.07.030] [PMID: 16950503]
[http://dx.doi.org/10.1016/j.ijbiomac.2018.01.180] [PMID: 29408007]
[http://dx.doi.org/10.2174/1381612826666200331093207] [PMID: 32228418]
[http://dx.doi.org/10.1016/S0031-9422(97)00262-8]
[http://dx.doi.org/10.1038/227680a0] [PMID: 5432063]
[http://dx.doi.org/10.1016/j.neuropharm.2011.07.037] [PMID: 21843537]
[http://dx.doi.org/10.1089/zeb.2017.1436] [PMID: 28704145]
[http://dx.doi.org/10.1371/journal.pone.0036931] [PMID: 22615849]
[http://dx.doi.org/10.1016/j.bbr.2019.03.040] [PMID: 30922939]
[http://dx.doi.org/10.1016/j.jep.2017.06.012] [PMID: 28645783]
[http://dx.doi.org/10.1523/JNEUROSCI.19-03-00916.1999] [PMID: 9920655]
[http://dx.doi.org/10.2174/1570159X17666191016092221] [PMID: 31622208]
[http://dx.doi.org/10.1016/j.bbr.2010.05.031] [PMID: 20510300]
[http://dx.doi.org/10.1016/S0091-3057(00)00422-6] [PMID: 11166068]
[http://dx.doi.org/10.1016/j.physbeh.2006.08.026] [PMID: 17049956]
[http://dx.doi.org/10.1016/j.pbb.2009.07.009] [PMID: 19643124]
[http://dx.doi.org/10.1371/journal.pone.0019397] [PMID: 21559304]
[http://dx.doi.org/10.1016/j.nlm.2009.07.001] [PMID: 19591953]
[http://dx.doi.org/10.1016/j.pbb.2015.05.014] [PMID: 26026898]
[http://dx.doi.org/10.1016/0091-3057(92)90173-D] [PMID: 1359576]
[http://dx.doi.org/10.1016/S0301-0082(03)00087-X] [PMID: 12927745]
[http://dx.doi.org/10.1016/j.yebeh.2009.05.002] [PMID: 19446042]
[http://dx.doi.org/10.1007/BF00767496] [PMID: 7583871]
[http://dx.doi.org/10.1017/S0952523800004338] [PMID: 2487638]
[http://dx.doi.org/10.1016/0006-8993(89)90048-6] [PMID: 2565147]
[http://dx.doi.org/10.1007/BF00215473] [PMID: 3110824]
[http://dx.doi.org/10.1038/s41398-019-0368-y] [PMID: 30670681]
[http://dx.doi.org/10.1016/j.pbb.2014.09.022] [PMID: 25284132]
[http://dx.doi.org/10.1002/eji.200425889] [PMID: 15682450]
[http://dx.doi.org/10.1371/journal.pone.0027084] [PMID: 22073258]
[http://dx.doi.org/10.1007/978-1-4939-1154-7_15]
[http://dx.doi.org/10.1002/asia.201800996] [PMID: 30204301]
[http://dx.doi.org/10.3390/molecules15042609] [PMID: 20428068]
[http://dx.doi.org/10.1186/1471-2202-11-90] [PMID: 20678210]