Adherence to antimalarial drug policy among doctors in Delta State, Nigeria: implications for malaria control

Baseline and recurrent exposure to the standard dose of artemisinin-based combination therapies (ACTs) induces oxidative stress and liver damage in mice (BALB/c)

Background

In malaria-endemic countries, repeated intake of artemisinin-based combination therapies (ACTs) is rampant and driven by drug resistance, improper usage, and easy accessibility. Stress effects and potential liver toxicity due to the frequent therapeutic use of ACTs have not been extensively studied. Here, we investigated the effects of repeated treatment with standard doses of the commonly used ACTs artemether/lumefantrine (A/L) and artesunate-amodiaquine (A/A) on oxidative stress and liver function markers in male mice (BALB/c).

Methods

Forty Five mice were divided into three groups: control, A/L, and A/A. The drugs were administered three days in a row per week, and the regimen was repeated every two weeks for a total of six cycles. The levels of oxidative stress and liver function markers were measured in both plasma and liver tissue after initial (baseline) and repeated exposures for the second, third, and sixth cycles.

Results

Exposure to A/L or A/A caused a significant (p < 0.001) increase in plasma malondialdehyde (MDA) levels after the first and repeated exposure periods. However, Hepatic MDA levels increased significantly (p < 0.01) only after the sixth exposure to A/A. Following either single or repeated exposure to A/L or A/A, plasma and liver glutathione peroxidase (GPx) and catalase (CAT) activities, plasma aspartate and alanine transaminase, alkaline phosphatase activity, and bilirubin levels increased, whereas total plasma protein levels decreased significantly (p < 0.001). Varying degrees of hepatocyte degeneration and blood vessel congestion were observed in liver tissues after a single or repeated treatment period.

Conclusion

Irrespective of single or repeated exposure to therapeutic doses of A/L or A/A, plasma oxidative stress and liver damage were observed. However, long-term repeated A/A exposure can led to hepatic stress. Compensatory processes involving GPx and CAT activities may help reduce the observed stress.

Application of mathematical modelling to inform national malaria intervention planning in Nigeria

BACKGROUND

For their 2021-2025 National Malaria Strategic Plan (NMSP), Nigeria's National Malaria Elimination Programme (NMEP), in partnership with the World Health Organization (WHO), developed a targeted approach to intervention deployment at the local government area (LGA) level as part of the High Burden to High Impact response. Mathematical models of malaria transmission were used to predict the impact of proposed intervention strategies on malaria burden.

METHODS

An agent-based model of Plasmodium falciparum transmission was used to simulate malaria morbidity and mortality in Nigeria's 774 LGAs under four possible intervention strategies from 2020 to 2030. The scenarios represented the previously implemented plan (business-as-usual), the NMSP at an 80% or higher coverage level and two prioritized plans according to the resources available to Nigeria. LGAs were clustered into 22 epidemiological archetypes using monthly rainfall, temperature suitability index, vector abundance, pre-2010 parasite prevalence, and pre-2010 vector control coverage. Routine incidence data were used to parameterize seasonality in each archetype. Each LGA's baseline malaria transmission intensity was calibrated to parasite prevalence in children under the age of five years measured in the 2010 Malaria Indicator Survey (MIS). Intervention coverage in the 2010-2019 period was obtained from the Demographic and Health Survey, MIS, the NMEP, and post-campaign surveys.

RESULTS

Pursuing a business-as-usual strategy was projected to result in a 5% and 9% increase in malaria incidence in 2025 and 2030 compared with 2020, while deaths were projected to remain unchanged by 2030. The greatest intervention impact was associated with the NMSP scenario with 80% or greater coverage of standard interventions coupled with intermittent preventive treatment in infants and extension of seasonal malaria chemoprevention (SMC) to 404 LGAs, compared to 80 LGAs in 2019. The budget-prioritized scenario with SMC expansion to 310 LGAs, high bed net coverage with new formulations, and increase in effective case management rate at the same pace as historical levels was adopted as an adequate alternative for the resources available.

CONCLUSIONS

Dynamical models can be applied for relative assessment of the impact of intervention scenarios but improved subnational data collection systems are required to allow increased confidence in predictions at sub-national level.

Evaluation of rational prescribing in a hospital paediatric outpatient clinic in Nigeria

BACKGROUND

Irrational prescribing is a continuing public health issue in low/middle-income countries. This study evaluated the drug use pattern of medicines in paediatrics aged below 12 years attending the outpatient paediatric clinic of Bingham University Teaching Hospital, Nigeria.

METHOD

An observational cross-sectional study was conducted using patients' medical records who attended the outpatient paediatric clinic from 1 January to 30 April 2022. The WHO prescribing indicators and guidelines for investigating drug use in health facilities were used.

RESULT

A total of 800 prescriptions containing 2723 drugs were analysed, with a mean number of drugs per prescription of 3.4. A total of 651 patients (81.3%) had at least one antibiotic, and the number of encounters with injection was 17.5% (140 patients). Prescribing by generic name was done for 1406 (51.6%) drugs; of the 2723 drugs prescribed, 2441 (89.6%) were from the WHO Pediatric Essential Medication List. In addition, 80% of the prescriptions contained antimalaria. Analgesics/antipyretics were the most frequently prescribed medicine (87.9%).

CONCLUSION

The findings of this study deviated from the WHO recommended standards. There is a need to target paediatric clinics further and enforce national strategies to tackle non-standard prescribing practices among the paediatric population.

Knowledge and practices regarding malaria and the National Treatment Guidelines among public health workers in Equatorial Guinea

Background

In 2018, an estimated 228 million cases of malaria occurred worldwide. Countries are far from having achieved reasonable levels of national protocol compliance among health workers. Lack of awareness of treatment protocols and treatment resistance by prescribers threatens to undermine progress when it comes to reducing the prevalence of this disease. This study sought to evaluate the degree of knowledge and practices regarding malaria diagnosis and treatment amongst prescribers working at the public health facilities of Bata, Equatorial Guinea.

Methods

A cross-sectional survey was conducted in October-December 2017 amongst all public health professionals who attended patients under the age of 15 years, with suspected malaria in the Bata District of Equatorial Guinea. Practitioners were asked about their practices and knowledge of malaria and the National Malaria Treatment Guidelines. A bivariate analysis and a logistic regression model were used to determine factors associated with their knowledge.

Results

Among the 44 practitioners interviewed, 59.1% worked at a Health Centre and 40.9% at the District Hospital of Bata. Important differences in knowledge and practices between hospital and health centre workers were found. Clinical diagnosis was more frequently by practitioners at the health centres (p = 0.059), while microscopy confirmation was more frequent at regional hospital (100%). Intramuscular artemether was the anti-malarial most administrated at the health centres (50.0%), while artemether-lumefantrine was the treatment most used at the regional hospital (66.7%). Most practitioners working at public health facilities (63.6%) have a low level of knowledge regarding the National Malaria Treatment Guidelines. While knowledge regarding malaria, the National Malaria Treatment Guidelines and treatment resistances is low, it was higher amongst hospital workers than amongst practitioners at health centres.

Conclusions

It is essential to reinforce practitioners’ knowledge, treatment and diagnosis practices and use of the National Malaria Treatment Guidelines in order to improve malaria case management and disease control in the region. A specific malaria training programme ensuring ongoing updates training is necessary in order to ensure that greater experience does not entail obsolete knowledge and, consequently, inadequate diagnosis and treatment practices.

Assessment of Use of National Guidelines for Malaria Case Management among Pediatric Resident Doctors Attending an Update Course in Benin City, Nigeria

Introduction:

The National Malaria Guideline is a veritable tool for appropriate case management of malaria. Whether the pediatric residents who are the primary caregivers of children know and make use of this guideline in their routine practice is not yet assessed.

Aim:

The aim of the study is to assess the awareness of the Nigerian pediatric residents of the national guidelines for malaria case management (including antimalarial prescription for uncomplicated and severe malaria).

Settings and Design:

The descriptive study carried out during the 2017 National Postgraduate Medical College of Nigeria, Faculty of Paediatrics Update Course in Benin City.

Subjects and Methods:

Data were obtained using a self-administered questionnaire which was given to all pediatric residents who participated at the update course and who had given written informed consent.

Statistical Analysis Used:

The statistical analysis was done using the Statistical Package for the Social Sciences version 16.0 (Inc., Chicago, Illinois, USA).

Results:

Of the 108 participants whose questionnaires were analyzed, 75.0% were Part 1 candidates and 25.0% Part 2 candidates; mean age 34.0 ± 4.5 years (range 26–51 years) and 42 (39.0%) males while 66 (61.0%) were female. Ninety-four (87.0%) were aware of the current national guidelines for management of malaria and 45 (41.7%) had read the guidelines. Correctness of prescription was obtained from 39 (36.0%) respondents in uncomplicated malaria cases and 44 (40.7%) in severe malaria cases. This finding did not significantly associate with the years of practice, level of practice, practicing institutions, awareness, and reading of the national guideline.

Conclusions:

Most pediatric residents have not read nor use the national guidelines for management of malaria which reflected in poor prescription pattern of antimalarial drugs in routine practice.