INVESTIGATION ON ANTIDIARRHOEAL ACTIVITY OF ARISTOLOCHIA INDICA LINN. ROOT EXTRACTS IN MICE

Background: The present study aimed at investigating the effect of ethanolic extract (EtAI), and aqueous extract (AqAI) of Aristolochia indica Linn roots on castor oil-induced diarrhoea and study on small intestinal transit. Phytochemical analysis of extracts was performed as per standard procedure. Materials and Methods: The oral toxicity study using Swiss albino mice was performed in accordance with OECD guidelines. The EtAI and AqAI extracts of Aristolochia indica Linn were studied for antidiarrhoeal property using castor oil-induced diarrhoeal model and charcoal-induced gastrointestinal motility test in Swiss albino mice. Results: Among the tested doses of 200 and 400 mg/kg body weight, the extracts reduced the frequency and severity of diarrhoea in test animals throughout the study period. At the same doses, the extract delayed the intestinal transit of charcoal meal in test animals as compared to the control and the results were statistically significant. Conclusion: Experimental findings showed that ethanol extract of Aristolochia indica Linn root possess significant antidiarrheal activity and may be a potent source of anti-diarrhoeal drug in future

Assessment of effectiveness of nonspecific antidiarrheal agents in reducing the need for intravenous rehydration in children with acute diarrhea

Background: In clinical practice, nonspecific antidiarrheals are most commonly used by clinicians along with routine treatment to hasten the recovery and to give psychological reassurance. This study was conducted to assess the effectiveness of nonspecific antidiarrheal agents in reducing the need for intravenous rehydration in children with acute diarrhea. Materials and Methods: This was a prospective, observational study done in clinical settings for a period of 3 years at two pediatric clinics and at a tertiary care hospital. Children were divided into 5 treatment groups (viz, control, racecadotril, Mebarid, Diarex and loperamide) at the discretion of the pediatrician. One questionnaire was provided to parents to record the details about the course of diarrhea. Parents were sensitized to report any episode of complication or need for intravenous fluids. Results: The unscheduled need for intravenous fluids due to dehydration was significantly higher in control group compared to other groups {Control: 7.37%, Racecadotril : 1.71% Mebarid: 2.4%, Diarex: 0%, Loperamide : 0%)}. Conclusion: Present study suggests that use of nonspecific antidiarrheals may decrease the need for admission for intravenous fluids in children with acute diarrhea

Implementing remote pharmacy objective structured clinical examination during the COVID-19 pandemic

Objective: This paper describes the development and feasibility evaluation of a formative remote objective structured clinical examination (OSCE) for second-year students in a four-year Bachelor of Pharmacy (B.Pharm.) honours programme. Methods. A five- station remote formative OSCE was developed and implemented using Microsoft Teams. The authors used a post-OSCE evaluation, in combination with the results of a students’ survey and comprehensive feedback from faculty. Results: A total of seventy second-year B.Pharm. (Hons.) students participated in the online OSCE. Based on the post-OSCE evaluation, about 80% of students agreed that the OSCE ran smoothly. Respondents agreement on the time allocated to complete each station varied between 63.6% and 81.8%. Time allocation for each station and internet connectivity were raised as the main concerns by both the students and the faculty. Conclusion: A remote online OSCE is a feasible strategy for assessment of various skills based on different tasks, reflecting the scope of practice for future pharmacists, and offers a promising direction towards the assessment of such practical skills. Online OSCE planning, development and evaluation are in themselves useful for clarifying assessment goals, processes, hindrances and affordances

Development and rheological evaluation of DEET (N,N-diethyL-3-methylbenzamide) microparticles loaded hydrogel for topical application

OBJECTIVES: N,N-Diethyl-3-methylbenzamide (DEET) is a broad-spectrum insect repellent that can easily permeate through the skin and can cause undesirable effects, especially in children and pregnant women. The objective of this research was to formulate and evaluate DEET-encapsulated microparticles containing a hydrogel designed to reduce skin permeation and prolong drug release. MATERIALS AND METHODS: The formulation design was based on the independent formulation variables of the concentration of chitosan and sodium tripolyphosphate using a simple factorial design experiment. DEET-loaded microparticles were developed and incorporated into a hydrogel. The size of the microparticles was analyzed using the Zetasizer Nano(®) particle size analyzer, and the surface morphology, using field emission scanning electron microscopy. Drug release from the microparticles was determined by the dialysis bag method. A rheological evaluation of the formulated gel was performed using a Thermo Haake Rheometer. The in vitro permeation of the formulation was performed using a synthetic Strat-M(®) membrane. RESULTS: The size of the microparticles ranged from 0.45 to 8.3 μm, and the encapsulation efficiencies were >50% for all the formulations. The drug-release curves showed no initial burst release from the microparticle formulation. Instead, a slow and controlled drug release was observed over 24 hours that followed Higuchi kinetics. The cumulative amount of DEET permeated (over 24 h) from the DEET solution (control), and the formulation was 211.6±19.5 μg/cm(2) and 4.07±0.08 μg/cm(2), respectively. CONCLUSION: A significantly low DEET permeation from the microparticle formulations indicated minimal absorption of the drug into the body and thus, reduced systemic toxicity. Thixotropic evaluation of the hydrogel formulation demonstrated a hysteresis loop that fitted closely to the Herschel-Bulkley rheological model, ensuring an effortless application and prolonged retention on the skin. Hence, it can be concluded that the developed formulation is an effective delivery approach for controlled insect repellent activity with reduced skin absorption