1.The Combination of Antidepressant Duloxetine with Piracetam in Mice does not Produce Enhancement of Nootropic Activity.
Pravin Popatrao KALE ; Veeranjaneyulu ADDEPALLI ; Amrita SARKAR ; Sonam PATEL ; Jay SAVAI
Experimental Neurobiology 2014;23(3):224-230
There is a strong association between depression and memory impairment. The present study aims to assess the nootropic activity of duloxetine and piracetam combination. Male Swiss Albino mice were divided randomly into 4 groups. Treatment of normal saline (10 ml/kg), duloxetine (10 mg/kg), piracetam (100 mg/kg), and duloxetine (5 mg/kg) plus piracetam (50 mg/kg) were given through intra-peritoneal route to group I-IV, respectively. Transfer latency in elevated plus maze (EPM) and time spent in target quadrant in Morris water maze (MWM) were recorded. Estimation of brain monoamines in hippocampus, cerebral cortex, and whole brain were done using HPLC with fluorescence detector. Piracetam treated group showed significant decrease in transfer latency in EPM and increase in time spent in target quadrant recorded in MWM. Combination treated group failed to produce statistically significant nootropic effect in both EPM and MWM. Combination treated group failed to increase brain monoamine levels when compared against duloxetine and piracetam treated groups, separately. But there was exception of significant increase in norepinephrine levels in hippocampi when compared against duloxetine treated group. Results indicate no cognitive benefits with piracetam plus duloxetine combination. These findings can be further probed with the aim of understanding the interaction between duloxetine and piracetam as a future endeavor.
Animals
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Brain
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Cerebral Cortex
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Chromatography, High Pressure Liquid
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Depression
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Fluorescence
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Hippocampus
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Humans
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Male
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Maze Learning
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Memory
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Mice*
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Norepinephrine
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Piracetam*
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Duloxetine Hydrochloride
2.Pharmacological studies on Buchanania lanzan Spreng.-A focus on wound healing with particular reference to anti-biofilm properties
Pattnaik Ashok ; Sarkar Ratul ; Sharma Amrita ; Yadav Kumar Kirendra ; Kumar Alekh ; Roy Paramita ; Mazumder Avijit ; Karmakar Sanmoy ; Sen Tuhinadri
Asian Pacific Journal of Tropical Biomedicine 2013;(12):967-974
Objective:To evaluate the wound healing activity of the methanolic root extract of Buchanania lanzan Spreng. (B. lanzan), with a focus on antimicrobial and anti-biofilm properties.
Methods: The extract was evaluated for its wound healing properties (excision and incision models) as evident from the analysis of tensile strength and wound contraction. The extract was also screened for antibacterial properties against different Gram positive and Gram negative bacterial strains. B. lanzan was also studied for its effect on biofilm formation and disruption of preformed biofilms. The synergistic effect of B. lanzan was determined in combination with gentamicin.
Results:Topical application of B. lanzan (10%w/w ointment) significantly increased (40.84%) the tensile strength in the incision wound model. B. lanzan also showed significant wound healing activity in excision model and such significant activity was observed from the 9th day. Whereas Soframycin displayed significant wound healing activity from the 6th day. It was found that root extracts of B. lanzan revealed significant inhibition against all tested pathogens. B. lanzan displayed antimicrobial activity against Gram positive (MIC 0.625 mg/mL) and Gram negative (MIC 0.625-1.25 mg/mL). B. lanzan was able to reduce biofilm formation and also caused disruption of preformed biofilms in a manner similar to ciprofloxacin. However, gentamicin was found to be ineffective against biofilms formed by Gram negative organism. According to the fractional inhibitory concentration index, B. lanzan displayed synergistic activity when it was combined with gentamicin.
Conclusions:From this study it may be concluded that the root extract of B. lanzan revealed significant wound healing potential, which was supported and well correlated with pronounced antibacterial activity of the tested plant parts.