The Milky Way: Paediatric milk-based dispersible tablets prepared by direct compression - a proof-of-concept study

Objectives: Dispersible tabletsare proposed by the World Health Organisation as the preferred paediatric formulation. It was hypothesised that tablets made from a powdered milk-base that disperse in water to form suspensions resembling milk might be a useful platform to improve acceptability in children. Methods: Milk-based dispersible tablets containing various types of powdered milk and infant formulae were formulated. The influence of milk type and content on placebo tablet properties was investigated using a design-of-experiments approach. Responses measured included friability, crushing strength, and disintegration time. Additionally, the influence of compression force on the tablet properties of a model formulation was studied by compaction simulation. Key findings: Disintegration times increased as milk content increased. Compaction simulation studies showed that compression force influenced disintegration time. These results suggest that the milk content, rather than type, and compression force were the most important determinants of disintegration. Conclusion: Up to 30% milk could be incorporated to produce 200 mg 10 mm flat-faced placebo tablets by direct compression disintegrating within 3 minutes in 5-10 ml of water, which is a realistic administration volume in children. The platform could accommodate 30% of a model API (caffeine citrate)

A survey of caregivers of Nigerian children less than 6 years of age to determine the experience and perception of acceptability of oral solid dosage forms.

OBJECTIVES: The World Health Organization (WHO) recommends flexible solid oral dosage forms such as dispersible tablet as the preferred formulation for (young) children, especially in developing/low- and middle-income countries, LMIC. The aim of this study was to assess experience, perceptions of acceptability, and formulation preferences, among 10 oral dosage forms for young children in a sample of end-users in Nigeria as an exemplar LMIC. METHODS: Using a semi-structured and validated questionnaire, 148 caregivers were surveyed. Acceptability was assessed by level of liking using a 3-point Likert scale and ease of administration. Preference was assessed from participants’ dosage form of choice. Oral dosage forms assessed were those mentioned in the British National Formulary for children, 2013. RESULTS: The formulation perceived as the most acceptable was the chewable/suckable tablet. However, preference was for liquids. Specifically with the dispersible tablet, whilst 89% (n = 111) of caregivers of young children found it easy-to-administer, only 50% of children liked it. CONCLUSION: There is a gap between the proposal of dispersible tablet as the preferred dosage form for young children and caregivers’ perceptions of acceptability and preference. Educational strategies to increase acceptability of dispersible tablets as the preferred formulation for young children would be required

Oral medicine acceptance in infants and toddlers: measurement properties of the caregiver-administered Children’s acceptance tool (CareCAT)

BACKGROUND: Developing age-appropriate medications remains a challenge in particular for the population of infants and toddlers, as they are not able to reliably self-report if they would accept and consequently take an oral medicine. Therefore, it is common to use caregivers as proxies when assessing medicine acceptance. The outcome measures used in this research field differ and most importantly lack validation, implying a persisting gap in knowledge and controversy in the field. The newly developed Caregiver-administered Children’s Acceptance Tool (CareCAT) is based on a 5-point nominal scale, with descriptors of medication acceptance behavior. This crosssectional study assessed the measurement properties of the tool with regards to the user’s understanding and its intra- and inter-rater reliability. METHODS: Participating caregivers were enrolled at a primary healthcare facility where their children (median age 6 months) had been prescribed oral antibiotics. Caregivers, trained observers and the tool developer observed and scored on the CareCAT tool what behavior children exhibited when receiving the medicine (n = 104). The videorecords of this process served as replicate observations (n = 69). After using the tool caregivers were asked to explain their observations and the tool descriptors in their own words. The tool’s reliability was assessed by percentage agreement and Cohen’s unweighted kappa coefficients of agreement for nominal scales. RESULTS: The study found that caregivers using CareCAT had a satisfactory understanding of the tool’s descriptors. Using its dichotomized scores the tool reliably was strong for acceptance behavior (agreement inter-rater 84–88%, kappa 0.66–0.76; intra-rater 87–89%, kappa 0.68–0.72) and completeness of medicine ingestion (agreement inter-rater 82–86%, kappa 0.59–0.67; intra-rater 85–93%, kappa 0.50–0.70). CONCLUSIONS: The CareCAT is a low-cost, easy-to-use and reliable instrument, which is relevant to assess acceptance behavior and completeness of medicine ingestion, both of which are of significant importance for developing age-appropriate medications in infants and toddlers

Expression and Cellular Immunogenicity of a Transgenic Antigen Driven by Endogenous Poxviral Early Promoters at Their Authentic Loci in MVA

CD8+ T cell responses to vaccinia virus are directed almost exclusively against early gene products. The attenuated strain modified vaccinia virus Ankara (MVA) is under evaluation in clinical trials of new vaccines designed to elicit cellular immune responses against pathogens including Plasmodium spp., M. tuberculosis and HIV-1. All of these recombinant MVAs (rMVA) utilize the well-established method of linking the gene of interest to a cloned poxviral promoter prior to insertion into the viral genome at a suitable locus by homologous recombination in infected cells. Using BAC recombineering, we show that potent early promoters that drive expression of non-functional or non-essential MVA open reading frames (ORFs) can be harnessed for immunogenic expression of recombinant antigen. Precise replacement of the MVA orthologs of C11R, F11L, A44L and B8R with a model antigen positioned to use the same translation initiation codon allowed early transgene expression similar to or slightly greater than that achieved by the commonly-used p7.5 or short synthetic promoters. The frequency of antigen-specific CD8+ T cells induced in mice by single shot or adenovirus-prime, rMVA-boost vaccination were similarly equal or marginally enhanced using endogenous promoters at their authentic genomic loci compared to the traditional constructs. The enhancement in immunogenicity observed using the C11R or F11L promoters compared with p7.5 was similar to that obtained with the mH5 promoter compared with p7.5. Furthermore, the growth rates of the viruses were unimpaired and the insertions were genetically stable. Insertion of a transgenic ORF in place of a viral ORF by BAC recombineering can thus provide not only a potent promoter, but also, concomitantly, a suitable insertion site, potentially facilitating development of MVA vaccines expressing multiple recombinant antigens

Patient access in fourteen high-income countries to new antibacterials approved by the FDA, EMA, PMDA, or Health Canada, 2010-2020

In 2010, the Infectious Diseases Society of America called for 10 new antibiotics by 2020 [1]. This goal was achieved in terms of the number of drug approvals, but actual patient access requires commercial launches in many countries, which itself requires sustainable commercial markets. Prior work has described limited access to new antibacterials in low- and middle-income countries (LMICs), in part due to the inability of many to afford these drugs [2]. This study examines patient access for new antibacterials in the G7 and 7 other high-income countries in Europe, to better understand other barriers to patient access to effective antibacterial therapy

Patient access in fourteen high-income countries to new antibacterials approved by the FDA, EMA, PMDA, or Health Canada, 2010-2020

In 2010, the Infectious Diseases Society of America called for 10 new antibiotics by 2020 [1]. This goal was achieved in terms of the number of drug approvals, but actual patient access requires commercial launches in many countries, which itself requires sustainable commercial markets. Prior work has described limited access to new antibacterials in low- and middle-income countries (LMICs), in part due to the inability of many to afford these drugs [2]. This study examines patient access for new antibacterials in the G7 and 7 other high-income countries in Europe, to better understand other barriers to patient access to effective antibacterial therapy

Off-label prescribing for children with chronic diseases in Nigeria; findings and implications.

Prescribing medicines in an off-label manner for children with chronic conditions is sparsely documented, even more so among developing countries. This needs addressing. The objective of this research was to investigate the extent of off-label prescribing among children with epilepsy, asthma, and sickle cell anaemia in Nigeria.Prescriptions for children ≤16 years documented in their case files that attended paediatric clinics in Lagos, Nigeria, for these three conditions between January and October 2015, were reviewed retrospectively to extract data on the medicines prescribed. British National Formulary for children and American Hospital Formulary Service Drug information were used as references.477 patients received 1746 prescriptions. Off-label prescriptions were seen in 7.7% of prescriptions, related to dose (93; 68.9%), indication (22; 16.3%), and age (20; 14.8%). Nervous system (525; 30.1%) and anti-infective (441; 25.2%) medicines were the most prescribed but only 9.5% and 8.2% of the respective prescriptions were off-label. Children with epilepsy received the most number (94; 69.6%) of off-label prescriptions. The three chronic conditions did not associate significantly with the category of off-label medicine prescribed (p = 0.925).Off-label prescribing for children with epilepsy, asthma and sickle cell anaemia occurs. Encouragingly, the overall rate appears low in Nigeria