ABSTRACT
Background: Boswellia serrata (BS) has been described in the ancient Ayurvedic texts Sushruta Samhita and Charaka Samhita. It possesses anti-inflammatory, analgesic, anti-arthritic and antioxidant properties. It is found that BS helps in surging of GABA levels in mice brain. The aim of this study was to evaluate the possible anxiolytic activity of BS in Swiss albino mice by light and dark arena (LDA) and elevated plus maze (EPM) models. Methods: In this study, BS (50 mg/kg, 100 mg/kg and 200 mg/kg; p.o) was evaluated for anxiolytic action and compared with standard drug (diazepam) and control (normal saline) in mice by LDA and EPM models. In LDA, number of entries and time spent in light and dark boxes were noted for individual mouse. Similarly, number of entries and time spent in open and closed arms were recorded for EPM model. Results: One-way Analysis of Variance (ANOVA) followed by Dunnett’s post-hoc test was used to analyze the data. BS in a dose of 50 mg/kg has shown significant increase in time spent in light box (p<0.05) and decrease in time spent in dark box (p<0.05) when compared to control group in LDA model. Similarly, in EPM model 200 mg/kg of BS significantly increased time spent in open arm (p<0.001) and decrease in time spent in closed arm (p<0.001) when compared to control group. Conclusion: BS in dose of 50 mg/kg and 200 mg/kg has significant anxiolytic action in animal models.
ABSTRACT
Objectives: The aim of the study was to investigate the chronic effect of Olanzapine; an atypical antipsychotic drug on maximal electroshock (MES) induced seizures in Wistar albino rats. Methods: Olanzapine (2mg/kg, 10 days orally) was used to study its effect on MES induced seizures in Wistar albino rats. Duration of the tonic hind limb extension was noted. Results: Olanzapine (2mg/kg) significantly (p<0.001) increased the duration of hind limb extension induced by MES. Conclusions: The data suggests that Olanzapine, the atypical antipsychotic drug has a proconvulsant action.
ABSTRACT
Inferior vena cava collapsibility index [IVC-CI] has been shown to correlate with both clinical and invasive assessment of intravascular volume status, but has important limitations such as the requirement for advanced sonographic skills, the degree of difficulty in obtaining those skills, and often challenging visualization of the IVC in the postoperative patient. The current study aims to explore the potential for using femoral [FV] or internal jugular [IJV] vein collapsibility as alternative sonographic options in the absence of adequate IVC visualization. A prospective, observational study comparing IVC-CI and Fem- and/or IJV-CI was performed in two intensive care units [ICU] between January 2012 and April 2014. Concurrent M-mode measurements of IVC-CI and FV- and/or IJV-CI were collected during each sonographic session. Measurements of IVC were obtained using standard technique. IJV-CI and FV-CI were measured using high-frequency, linear array ultrasound probe placed in the corresponding anatomic areas. Paired data were analyzed using coefficient of correlation/determination and Bland-Altman determination of measurement bias. We performed paired ultrasound examination of IVC-IJV [n = 39] and IVC-FV [n = 22], in 40 patients [mean age 54.1; 40% women]. Both FV-CI and IJV-CI scans took less time to complete than IVC-CI scans [both, P < 0.02]. Correlations between IVC-CI/FV-CI [R[2] = 0.41] and IVC-CI/IJV-CI [R[2] = 0.38] were weak. There was a mean -3.5% measurement bias between IVC-CI and IJV-CI, with trend toward overestimation for IJV-CI with increasing collapsibility. In contrast, FV-CI underestimated collapsibility by approximately 3.8% across the measured collapsibility range. Despite small measurement biases, correlations between IVC-CI and FV-/IJV-CI are weak. These results indicate that IJ-CI and FV-CI should not be used as a primary intravascular volume assessment tool for clinical decision support in the ICU. The authors propose that IJV-CI and FV-CI be reserved for clinical scenarios where sonographic acquisition of both IVC-CI or subclavian collapsibility are not feasible, especially when trended over time. Sonographers should be aware that IJV-CI tends to overestimate collapsibility when compared to IVC-CI, and FV-CI tends to underestimates collapsibility relative to IVC-CI