Engineering a Holistic Response to the Global Crisis of Forced Displacement.

The global coronavirus pandemic has demonstrated the necessity of engineering approaches, from research and development to rapid prototyping and production, in saving lives all across the world [1]. From personal protective equipment design to vaccine production and distribution, engineering has been the bedrock of an effective global response. However, despite major gains made in the last several decades, there are still millions all across the world, including the vulnerable displaced, who rarely benefit from new developments at the interface of engineering, biology, and health.

Designing Devices for Vulnerable Populations: What Needs to Change?

The health and well-being of refugees, internally displaced persons (IDPs), and stateless communities are often at risk due to political, logistical, and security challenges associated with providing adequate and timely medical aid to the deserving groups [1]. These challenges are further exacerbated by the absence of context-appropriate technologies that can aid in diagnosis, management, and treatment of life-threatening illnesses. The health challenges faced by forcibly displaced communities are a product of unique factors ranging from conflict to climate change and are further complicated by the living conditions and the surrounding environment [2]. In these situations, there is a need for technologies that are safe, effective, reliable, unbiased, and appropriate for the cultural and economic context.

Veterinary consumption of highest priority critically important antimicrobials and various growth promoters based on import data in Pakistan.

BACKGROUND: Antimicrobial resistance (AMR) is a global public health emergency driven by the indiscriminate use of antimicrobial agents in humans and animals. Antimicrobial consumption surveillance guides its containment efforts. In this study, we estimated, for the first time, veterinary consumption of Critically Important Antimicrobials with Highest Priority (CIA-HtP) for Pakistan. METHODS: The study used an export/import database which provided imports data collected from the Pakistan Customs Authority. We investigated imports of 7 CIA-HtP and various poultry feed additives/growth promoters (FAs/GPs) identified from a survey of 10 poultry and dairy farms in Punjab province in Pakistan and a previously published study, over a three-year period of 2017-2019. Antimicrobial consumption was estimated in mg/kg of country's animal biomass. FINDINGS: Imports, in tonnes, for these 7 CIA-HtP were for the years 2017-19: tylosin 240.84, enrofloxacin 235.14, colistin 219.73, tilmicosin 97.32, spiramycin 5.79, norfloxacin 5.55, ceftiofur 1.02 for a total 805.39 tonnes. The corresponding antimicrobial consumption was 10.05 mg/kg of animal biomass. The poultry FAs/GPs contained: zinc bacitracin, enramycin, bacitracin methylene disalicylate, tylosin, tiamulin, colistin, lincomycin, streptomycin, flavophospholipol, tilmicosin, and penicillin with a total antimicrobial chemical compound (ACC) import volume of 577.18 tonnes for the years 2017-2019; and an estimated consumption of 96.53 mg/kg of poultry biomass. INTERPRETATION: These antimicrobials were a mix of macrolides, quinolones, polymyxins and cephalosporins, among which are some also on the Watch or Reserve list by the WHO, indicating the need for stewardship and to conserve essential antimicrobials to contain AMR. The finding that a yearly average of 192.39 tonnes of the ACC imported were FAs/GPs further highlight the need for stronger regulation and enforcement.

Integrated in silico and 3D in vitro model of macrophage migration in response to physical and chemical factors in the tumor microenvironment.

Macrophages are abundant in the tumor microenvironment (TME), serving as accomplices to cancer cells for their invasion. Studies have explored the biochemical mechanisms that drive pro-tumor macrophage functions; however the role of TME interstitial flow (IF) is often disregarded. Therefore, we developed a three-dimensional microfluidic-based model with tumor cells and macrophages to study how IF affects macrophage migration and its potential contribution to cancer invasion. The presence of either tumor cells or IF individually increased macrophage migration directedness and speed. Interestingly, there was no additive effect on macrophage migration directedness and speed under the simultaneous presence of tumor cells and IF. Further, we present an in silico model that couples chemokine-mediated signaling with mechanosensing networks to explain our in vitro observations. In our model design, we propose IL-8, CCL2, and ß-integrin as key pathways that commonly regulate various Rho GTPases. In agreement, in vitro macrophage migration remained elevated when exposed to a saturating concentration of recombinant IL-8 or CCL2 or to the co-addition of a sub-saturating concentration of both cytokines. Moreover, antibody blockade against IL-8 and/or CCL2 inhibited migration that could be restored by IF, indicating cytokine-independent mechanisms of migration induction. Importantly, we demonstrate the utility of an integrated in silico and 3D in vitro approach to aid the design of tumor-associated macrophage-based immunotherapeutic strategies.

Pharmacists' perception of their challenges at work, focusing on antimicrobial resistance: a qualitative study from Bangladesh.

Background: The indiscriminate use of antimicrobial medicines has contributed to the development of microorganisms' resistance to antibiotics. Antimicrobial resistance (AMR) is a major global health problem and is most acute in countries that have a weak health care and regulatory system and a high burden of infectious diseases, such as Bangladesh. Due to shortages of physicians available to diagnose and prescribe appropriate antibiotics, people with ailments in Bangladesh are forced to contact various types of health care services, including retail pharmacies, that lack supervision by qualified medical personnel. It is unknown how pharmacists perceive the AMR situation and the related challenges they face.Objective: The aim of the study was to understand retail pharmacist's perceptions regarding AMR.Method: A qualitative study design was used, and in-depth interviews were held with retail pharmacists in Dhaka.Results: The participants demonstrated a variety of concerns regarding AMR. They considered that self-medication, old prescriptions, lack of regulations and supervision, and readily available antibiotics were the main factors that contributed to the misuse of antimicrobial medicines and the development of AMR.Conclusions: To control the further spread of AMR in Bangladesh, there is a need to work at several levels of the health system simultaneously. Initiatives could include establishment of the 'Model Pharmacy' programme nationwide, increasing and widening the focus on AMR in pharmacists' education, ensuring the implementation of government guidelines on AMR, increasing public awareness of the consequences of antimicrobial use, and surveillance and monitoring of regulations and progress. A multipronged strategy is necessary not only for better AMR control but also for investment in a system that is well equipped to provide equitable care in the face of both existing and new health challenges.