METHODS: Membrane films were prepared from water-soluble O-C solution blended with various concentrations of glycerol to modify the physical properties of the films. In vitro and in vivo biocompatibility evaluations were performed using primary human skin fibroblast cultures and subcutaneous implantation in a rat model, respectively.
RESULTS: Addition of glycerol significantly influenced the barrier and mechanical properties of the films. Water absorption capacity was in the range of 80%-160%, whereas water vapor transmission rate varied from 1,180 to 1,618 g/m2 per day. Both properties increased with increasing glycerol concentration. Tensile strength decreased while elongation at break increased with the addition of glycerol. O-C films were found to be noncytotoxic to human fibroblast cultures and histological examination proved that films are biocompatible.
CONCLUSION: These results indicate that the membrane film from O-C has potential application as a wound-dressing material.
OBJECTIVES: This study explores the pattern of antibiotic use and practices in a Malaysian community and identifies the variables associated with a likelihood of non-compliance with a course of antibiotic treatment.
SETTING: The study was conducted in Cheras, a community located to the south-east of Kuala Lumpur, the capital city of Malaysia.
METHOD: A cross-sectional survey was conducted with 250 individuals, using an interviewer-administered questionnaire in Cheras, Kuala Lumpur, Malaysia.
MAIN OUTCOME MEASURES: Frequency of antibiotic use, sources of antibiotics, use of antibiotics without prescription, discontinuation of antibiotic treatment, antibiotic resistance awareness, handling of unused antibiotics, and association between respondents characteristics and compliance with a course of antibiotic treatment.
RESULTS: Approximately 36 % of the participants (n = 91) had taken antibiotics in the year of the study. The majority (66.8 %) obtained antibiotics from clinics. Almost 80 % of the participants had never obtained antibiotics without a doctor's prescription. Nearly 55 % discontinued the course of antibiotics once symptoms disappeared. The most common method of disposing leftover antibiotics was throwing them into the household rubbish bin (78.8 %). Only 6.4 % of participants returned leftover antibiotics to the pharmacist or doctor. Univariate analysis revealed that male gender (p = 0.04), lack of knowledge of antibiotic functions (p < 0.0001), and lack of awareness of antibiotic resistance (p < 0.0001) were all significantly associated with a greater likelihood of non-compliance with a full course of prescribed antibiotic treatment.
CONCLUSION: Most individuals in the Malaysian community obtained antibiotics through prescription. Non-completion of a course of antibiotic treatment and improper disposal of unused antibiotics need to be addressed to prevent AMR. Male gender, lack of knowledge and awareness of antibiotics and resistance were significantly associated with a greater likelihood of non-compliance with a full course of prescribed antibiotic treatment. Therefore, patient education and counselling about antibiotics and antibacterial resistance is very important to enhance compliance to antibiotic therapy.