scholarly journals A systematic review of modeling and simulation approaches in designing targeted treatment technologies for Leukemia Cancer in low and middle income countries

2021 ◽  
Vol 18 (6) ◽  
pp. 8149-8173
Author(s):  
Henry Fenekansi Kiwumulo ◽  
◽  
Haruna Muwonge ◽  
Charles Ibingira ◽  
John Baptist Kirabira ◽  
...  

<abstract> <p>Virtual experimentation is a widely used approach for predicting systems behaviour especially in situations where resources for physical experiments are very limited. For example, targeted treatment inside the human body is particularly challenging, and as such, modeling and simulation is utilised to aid planning before a specific treatment is administered. In such approaches, precise treatment, as it is the case in radiotherapy, is used to administer a maximum dose to the infected regions while minimizing the effect on normal tissue. Complicated cancers such as leukemia present even greater challenges due to their presentation in liquid form and not being localised in one area. As such, science has led to the development of targeted drug delivery, where the infected cells can be specifically targeted anywhere in the body.</p> <p>Despite the great prospects and advances of these modeling and simulation tools in the design and delivery of targeted drugs, their use by Low and Middle Income Countries (LMICs) researchers and clinicians is still very limited. This paper therefore reviews the modeling and simulation approaches for leukemia treatment using nanoparticles as an example for virtual experimentation. A systematic review from various databases was carried out for studies that involved cancer treatment approaches through modeling and simulation with emphasis to data collected from LMICs. Results indicated that whereas there is an increasing trend in the use of modeling and simulation approaches, their uptake in LMICs is still limited. According to the review data collected, there is a clear need to employ these tools as key approaches for the planning of targeted drug treatment approaches.</p> </abstract>

2021 ◽  
pp. 152483802110160
Author(s):  
Seema Vyas ◽  
Melissa Meinhart ◽  
Katrina Troy ◽  
Hannah Brumbaum ◽  
Catherine Poulton ◽  
...  

Evidence demonstrating the economic burden of violence against women and girls can support policy and advocacy efforts for investment in violence prevention and response programming. We undertook a systematic review of evidence on the costs of violence against women and girls in low- and middle-income countries published since 2005. In addition to understanding costs, we examined the consistency of methodological approaches applied and identified and assessed common methodological issues. Thirteen articles were identified, eight of which were from sub-Saharan Africa. Eight studies estimated costs associated with domestic or intimate partner violence, others estimated the costs of interpersonal violence, female genital cutting, and sexual assaults. Methodologies applied to estimate costs were typically based on accounting approaches. Our review found that out-of-pocket expenditures to individuals for seeking health care after an episode of violence ranged from US$29.72 (South Africa) to US$156.11 (Romania) and that lost productivity averaged from US$73.84 to US$2,151.48 (South Africa) per facility visit. Most studies that estimated provider costs of service delivery presented total programmatic costs, and there was variation in interventions, scale, and resource inputs measured which hampered comparability. Variations in methodological assumptions and data availability also made comparisons across countries and settings challenging. The limited scope of studies in measuring the multifaceted impacts of violence highlights the challenges in identifying cost metrics that extend beyond specific violence episodes. Despite the limited evidence base, our assessment leads us to conclude that the estimated costs of violence against women and girls are a fraction of its true economic burden.


2020 ◽  
pp. 1-20
Author(s):  
Andrea M. McGrattan ◽  
Yueping Zhu ◽  
Connor D. Richardson ◽  
Devi Mohan ◽  
Yee Chang Soh ◽  
...  

Background: Mild cognitive impairment (MCI) is a cognitive state associated with increased risk of dementia. Little research on MCI exists from low-and middle-income countries (LMICs), despite high prevalence of dementia in these settings. Objective: This systematic review aimed to review epidemiological reports to determine the prevalence of MCI and its associated risk factors in LMICs. Methods: Medline, Embase, and PsycINFO were searched from inception until November 2019. Eligible articles reported on MCI in population or community-based studies from LMICs. No restrictions on the definition of MCI used as long as it was clearly defined. Results: 4,621 articles were screened, and 78 retained. In total, n = 23 different LMICs were represented; mostly from China (n = 55 studies). Few studies from countries defined as lower-middle income (n = 14), low income (n = 4), or from population representative samples (n = 4). There was large heterogeneity in how MCI was diagnosed; with Petersen criteria the most commonly applied (n = 26). Prevalence of aMCI (Petersen criteria) ranged from 0.6%to 22.3%. Similar variability existed across studies using the International Working Group Criteria for aMCI (range 4.5%to 18.3%) and all-MCI (range 6.1%to 30.4%). Risk of MCI was associated with demographic (e.g., age), health (e.g., cardio-metabolic disease), and lifestyle (e.g., social isolation, smoking, diet and physical activity) factors. Conclusion: Outside of China, few MCI studies have been conducted in LMIC settings. There is an urgent need for population representative epidemiological studies to determine MCI prevalence in LMICs. MCI diagnostic methodology also needs to be standardized. This will allow for cross-study comparison and future resource planning.


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