Muhammad Majid Aziz

Overview of online two-dimensional liquid chromatography based on cell membrane chromatography for screening target components from traditional Chinese medicines

Cell membrane chromatography is a simple, specific, and time-saving technique for studying drug-receptor interactions, screening of active components from complex mixtures, and quality control of traditional Chinese medicines. However, the short column life, low sensitivity, low column efficiency (so cannot resolve satisfactorily mixture of compounds), low peak capacity, and inefficient in structure identification were bottleneck in its application. Combinations of cell membrane chromatography with multidimensional chromatography such as two-dimensional liquid chromatography and high sensitivity detectors like mass have significantly reduced many of the above-mentioned shortcomings. This paper provides an overview of the current advances in online two-dimensional-based cell membrane chromatography for screening target components from traditional Chinese medicines with particular emphasis on the instrumentation, preparation of cell membrane stationary phase, advantages, and disadvantages compared to alternative approaches. The last section of the review summarizes the applications of the online two-dimensional high-performance liquid chromatography based cell membrane chromatography reported since its emergence to date (2010-June 2016).

Non-prescription use of antibiotics among children in urban China: a cross-sectional survey of knowledge, attitudes, and practices

ABSTRACT Background: Non-prescription use of antibiotics in children is an important public health problem. We aimed to investigate primary caregivers’ knowledge, attitudes, and practices of antibiotics use among children in urban China. Methods: Knowledge, attitudes, and practices regarding antibiotics use in children were assessed through a cross-sectional questionnaire survey of 4200 caregivers of children under-7 years from three cities in China. Data were analyzed using descriptive statistics and multivariate analysis. Results: Caregivers’ knowledge gaps and undesirables attitudes regarding appropriate use of antibiotics were identified. 48.2% of respondents reported non-prescription use of antibiotics for children in the past 6 months. The most common sources of antibiotics used without a prescription are community pharmacies and leftovers. Storing antibiotics at home and caregivers’ supportive attitude were positively and significantly associated with non-prescription use of antibiotics in children, while significant inverse associations were found for caregiver’s knowledge of prescription-only regulation on antibiotics sales at community pharmacies. Conclusions: There was a high proportion of primary caregivers self-medicate antibiotics for children in urban China, despite their insufficient knowledge about antibiotic use. Public health initiatives are needed such as public education campaigns and stricter government regulation of antibiotic use and availability in community pharmacies.

Pattern of medication selling and self-medication practices: A study from Punjab, Pakistan

Background Access to medicines without prescription is a major contributing factor for self-medication practices. This study was designed to examine the ratio of non-prescribed medicines sales and self-medication practices in Punjab, Pakistan. This study also evaluates the reasons for self-medication within its communities. Methods An observational study was conducted in 272 systemically selected pharmacies to analyze medicines-related sales, with or without prescription. A cross-sectional survey was performed between June 2015 and November 2016. Consumers were interviewed about their self-medication practices. Results Of the pharmacies surveyed, 65.3% participated in the study. A total of 4348 medicines were purchased for self-medication by 3037 consumers (15.2% of all study participants), of which 873 (28.7%) participated in an interview. Majority (81.2%) medicine purchaser, (90.9%) interview participants, and (59.4%) drug users were male. On average, each community pharmacy sold 7.9 medicines without prescription each day, to an average of 5.5 customers. Many participants (28.9%) had matriculation in their formal education. The medicines most often sold for self-medication were analgesics and antipyretics(39.4%). More than 25% of participants reported fever symptoms and 47.8% assumed their illness was too trivial to consult a doctor. Media advertisements were the most common source of information for participants (46.7%). Conclusion Many types of medicines were often sold without prescription from community pharmacies. Self-medication was common practice for a wide range of illnesses. Pakistan also needs effective implementation of policies to monitor medication sales. Public education about rational medication and limits to advertising medicine are very necessary.

Direct and indirect cost of diabetes care among patients with type 2 diabetes in private clinics: a multicenter study in Punjab, Pakistan

ABSTRACT Background: Diabetes mellitus (DM) has a very high prevalence and poses a huge financial encumbrance on patients. This study aimed to evaluate the cost of diabetes care among patients with type 2 diabetes in private clinics of southern Punjab, Pakistan. Research design and methods: This was a descriptive, cross-sectional, prevalence-based, cost-of-illness (COI) study conducted in six private clinics of southern Punjab from July to September 2016, using a pretested questionnaire. Study participants were recruited using a random selection method. Continuous variables, including direct and indirect costs, were summarized using descriptive statistics. Inferential statistics were also used to analyze the correlation between the variables and cost. Results: The mean annual direct cost per patient with diabetes was estimated to be 332 USD. Medications accounted for the largest share (60.4%) of this cost. Age, locality, high socioeconomic status, and prolonged disease duration were significantly associated with the direct costs of illness (p < 0.05). Moreover, 19% of total earnings among very low-income patients were spent on diabetes care. Conclusions: A substantial proportion of patients’ income is spent on diabetes care in Punjab. Our findings support the substantial individual and societal burden caused by diabetes.