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1.
Front Med (Lausanne) ; 11: 1349093, 2024.
Article in English | MEDLINE | ID: mdl-38439905

ABSTRACT

Childhood blindness is an issue of global health impact, affecting approximately 2 million children worldwide. Vision 2020 and the United Nations Sustainable Development Goals previously identified childhood blindness as a key issue in the twentieth century, and while public health measures are underway, the precise etiologies and management require ongoing investigation and care, particularly within resource-limited settings such as sub-Saharan Africa. We systematically reviewed the literature on childhood blindness in West Africa to identify the anatomic classification and etiologies, particularly those causes of childhood blindness with systemic health implications. Treatable causes included cataract, refractive error, and corneal disease. Systemic etiologies identified included measles, rubella, vitamin A deficiency, and Ebola virus disease. While prior public health measures including vitamin A supplementation and vaccination programs have been deployed in most countries with reported data, multiple studies reported preventable or reversible etiologies of blindness and vision impairment. Ongoing research is necessary to standardize reporting for anatomies and/or etiologies of childhood blindness to determine the necessity of further development and implementation of public health measures that would ameliorate childhood blindness and vision impairment.

2.
J Med Econ ; 27(1): 184-192, 2024.
Article in English | MEDLINE | ID: mdl-38240249

ABSTRACT

AIMS: to provide insights into the recent Ebola virus disease (EVD) outbreaks on different aspects of daily life in the Democratic Republic of the Congo and propose possible solutions. METHODS: We collected information regarding the effects of EVD outbreaks on existing systems in the eastern part of the Democratic Republic of the Congo (DRC). We searched the PubMed database using the terms "impact effect Ebola outbreak system", "Management Ebola Poor Resources Settings", "Health Economic Challenges Ebola" and "Economic impact Ebola systems." Only studies focusing on epidemiology, diagnostics, sequencing, vaccination, therapeutics, ecology, work force, governance, healthcare provision and health system, and social, political, and economic aspects were considered. The search included the electronic archives of EVD outbreak reports from government and partners. RESULTS: EVD outbreaks negatively impacts the functions of countries. The disruption in activities is proportional to the magnitude of the epidemic and slows down the transport of goods, decreases the region's tourist appeal, and increases 'brain drain'. Most low- and medium-income countries, such as the DRC, do not have a long-term holistic emergency plan for unexpected situations or sufficient resources to adequately implement countermeasures against EVD outbreaks. Although the DRC has acquired sufficient expertise in diagnostics, genomic sequencing, administration of vaccines and therapeutics, clinical trials, and research activities, deployment, operation, and maintenance of these expertise and associated tools remains a concern. LIMITATIONS: Despite the data search extension, additional reports addressing issues related to social aspects of EVD outbreaks in DRC were not retrieved. CONCLUSION: National leadership has not yet taken the lead in strategic, operational, or financial aspects. Therefore, national leaders should double their efforts and awareness to encourage local fundraising, sufficient budget al.location, infrastructure construction, equipment provision, and staff training, to effectively support a holistic approach in response to outbreaks, providing effective results, and all types of research activities.


Subject(s)
Hemorrhagic Fever, Ebola , Humans , Hemorrhagic Fever, Ebola/epidemiology , Democratic Republic of the Congo/epidemiology , Disease Outbreaks/prevention & control
3.
Int J Mol Sci ; 24(7)2023 Mar 27.
Article in English | MEDLINE | ID: mdl-37047270

ABSTRACT

The Ebola virus (EBOV) is still highly infectious and causes severe hemorrhagic fevers in primates. However, there are no regulatorily approved drugs against the Ebola virus disease (EVD). The highly virulent and lethal nature of EVD highlights the need to develop therapeutic agents. Viral protein 40 kDa (VP40), the most abundantly expressed protein during infection, coordinates the assembly, budding, and release of viral particles into the host cell. It also regulates viral transcription and RNA replication. This study sought to identify small molecules that could potentially inhibit the VP40 protein by targeting the N-terminal domain using an in silico approach. The statistical quality of AutoDock Vina's capacity to discriminate between inhibitors and decoys was determined, and an area under the curve of the receiver operating characteristic (AUC-ROC) curve of 0.791 was obtained. A total of 29,519 natural-product-derived compounds from Chinese and African sources as well as 2738 approved drugs were successfully screened against VP40. Using a threshold of -8 kcal/mol, a total of 7, 11, 163, and 30 compounds from the AfroDb, Northern African Natural Products Database (NANPDB), traditional Chinese medicine (TCM), and approved drugs libraries, respectively, were obtained after molecular docking. A biological activity prediction of the lead compounds suggested their potential antiviral properties. In addition, random-forest- and support-vector-machine-based algorithms predicted the compounds to be anti-Ebola with IC50 values in the micromolar range (less than 25 µM). A total of 42 natural-product-derived compounds were identified as potential EBOV inhibitors with desirable ADMET profiles, comprising 1, 2, and 39 compounds from NANPDB (2-hydroxyseneganolide), AfroDb (ZINC000034518176 and ZINC000095485942), and TCM, respectively. A total of 23 approved drugs, including doramectin, glecaprevir, velpatasvir, ledipasvir, avermectin B1, nafarelin acetate, danoprevir, eltrombopag, lanatoside C, and glycyrrhizin, among others, were also predicted to have potential anti-EBOV activity and can be further explored so that they may be repurposed for EVD treatment. Molecular dynamics simulations coupled with molecular mechanics Poisson-Boltzmann surface area calculations corroborated the stability and good binding affinities of the complexes (-46.97 to -118.9 kJ/mol). The potential lead compounds may have the potential to be developed as anti-EBOV drugs after experimental testing.


Subject(s)
Ebolavirus , Hemorrhagic Fever, Ebola , Animals , Hemorrhagic Fever, Ebola/metabolism , Viral Proteins/metabolism , Molecular Docking Simulation , Cheminformatics , Ebolavirus/metabolism
4.
Molecules ; 28(3)2023 Jan 17.
Article in English | MEDLINE | ID: mdl-36770606

ABSTRACT

Many of the medicinally active molecules in the flavonoid class of phytochemicals are being researched for their potential antiviral activity against various DNA and RNA viruses. Quercetin is a flavonoid that can be found in a variety of foods, including fruits and vegetables. It has been reported to be effective against a variety of viruses. This review, therefore, deciphered the mechanistic of how Quercetin works against some of the deadliest viruses, such as influenza A, Hepatitis C, Dengue type 2 and Ebola virus, which cause frequent outbreaks worldwide and result in significant morbidity and mortality in humans through epidemics or pandemics. All those have an alarming impact on both human health and the global and national economies. The review extended computing the Quercetin-contained natural recourse and its modes of action in different experimental approaches leading to antiviral actions. The gap in effective treatment emphasizes the necessity of a search for new effective antiviral compounds. Quercetin shows potential antiviral activity and inhibits it by targeting viral infections at multiple stages. The suppression of viral neuraminidase, proteases and DNA/RNA polymerases and the alteration of many viral proteins as well as their immunomodulation are the main molecular mechanisms of Quercetin's antiviral activities. Nonetheless, the huge potential of Quercetin and its extensive use is inadequately approached as a therapeutic for emerging and re-emerging viral infections. Therefore, this review enumerated the food-functioned Quercetin source, the modes of action of Quercetin for antiviral effects and made insights on the mechanism-based antiviral action of Quercetin.


Subject(s)
Quercetin , Virus Diseases , Humans , Quercetin/pharmacology , Quercetin/therapeutic use , Quercetin/chemistry , Flavonoids/pharmacology , Flavonoids/therapeutic use , Functional Food , Virus Diseases/drug therapy , Antiviral Agents/pharmacology , Antiviral Agents/therapeutic use , Antiviral Agents/chemistry
5.
J Immunol Sci ; Suppl 3: 88-101, 2023 May 12.
Article in English | MEDLINE | ID: mdl-38333360

ABSTRACT

While treating a disease, patients or their relatives make decisions to pursue different therapeutic options, and various stages are involved in searching for a cure. This paper explored the pattern of health-seeking in the Democratic Republic of Congo (DRC) during the 10th Ebola virus disease (EVD) outbreak. Eight hundred randomly selected adults were surveyed using a questionnaire. Qualitative data were also collected through in-depth interviews with 17 community leaders and 20 focus group discussions with community members. The results showed that modern healthcare facilities are not usually considered the first option for treatment. The therapeutic journey generally begins with the patients, who treat themselves based on the what they know about the disease and the resources they have at their disposal. However, if the disease is not cured through self-medication, then patients or their relatives will visit a pharmacy. Patients request medication they know to be effective in treating the disease, and relatives can also assist in obtaining medication in the case of immobile patients. Pharmacies commonly sell the medication to patients or their relatives without a medical prescription.

6.
EMBO Rep ; 23(11): e51709, 2022 11 07.
Article in English | MEDLINE | ID: mdl-36094794

ABSTRACT

Phosphatidylserine (PS) is a critical lipid factor in the assembly and spread of numerous lipid-enveloped viruses. Here, we describe the ability of the Ebola virus (EBOV) matrix protein eVP40 to induce clustering of PS and promote viral budding in vitro, as well as the ability of an FDA-approved drug, fendiline, to reduce PS clustering and subsequent virus budding and entry. To gain mechanistic insight into fendiline inhibition of EBOV replication, multiple in vitro assays were run including imaging, viral budding and viral entry assays. Fendiline lowers PS content in mammalian cells and PS in the plasma membrane, where the ability of VP40 to form new virus particles is greatly lower. Further, particles that form from fendiline-treated cells have altered particle morphology and cannot significantly infect/enter cells. These complementary studies reveal the mechanism by which EBOV matrix protein clusters PS to enhance viral assembly, budding, and spread from the host cell while also laying the groundwork for fundamental drug targeting strategies.


Subject(s)
Ebolavirus , Hemorrhagic Fever, Ebola , Animals , Hemorrhagic Fever, Ebola/metabolism , Ebolavirus/physiology , Phosphatidylserines/metabolism , Fendiline/metabolism , Viral Matrix Proteins/metabolism , Virus Assembly , Cluster Analysis , Mammals/metabolism
7.
Int J Mol Sci ; 23(5)2022 Feb 27.
Article in English | MEDLINE | ID: mdl-35269770

ABSTRACT

Ebola virus disease (EVD), a disease caused by infection with Ebola virus (EBOV), is characterized by hemorrhagic fever and a high case fatality rate. With limited options for the treatment of EVD, anti-Ebola viral therapeutics need to be urgently developed. In this study, over 500 extracts of medicinal plants collected in the Lingnan region were tested against infection with Ebola-virus-pseudotyped particles (EBOVpp), leading to the discovery of Maesa perlarius as an anti-EBOV plant lead. The methanol extract (MPBE) of the stems of this plant showed an inhibitory effect against EBOVpp, with an IC50 value of 0.52 µg/mL, which was confirmed by testing the extract against infectious EBOV in a biosafety level 4 laboratory. The bioassay-guided fractionation of MPBE resulted in three proanthocyanidins (procyanidin B2 (1), procyanidin C1 (2), and epicatechin-(4ß→8)-epicatechin-(4ß→8)-epicatechin-(4ß→8)-epicatechin (3)), along with two flavan-3-ols ((+)-catechin (4) and (-)-epicatechin (5)). The IC50 values of the compounds against pseudovirion-bearing EBOV-GP ranged from 0.83 to 36.0 µM, with 1 as the most potent inhibitor. The anti-EBOV activities of five synthetic derivatives together with six commercially available analogues, including EGCG ((-)-epigallocatechin-3-O-gallate (8)), were further investigated. Molecular docking analysis and binding affinity measurement suggested the EBOV glycoprotein could be a potential molecular target for 1 and its related compounds.


Subject(s)
Catechin , Ebolavirus , HIV Fusion Inhibitors , Hemorrhagic Fever, Ebola , Maesa , Catechin/chemistry , Catechin/pharmacology , HIV Fusion Inhibitors/pharmacology , Hemorrhagic Fever, Ebola/drug therapy , Molecular Docking Simulation , Plant Extracts/chemistry , Plant Extracts/pharmacology
8.
J Transcult Nurs ; 33(1): 72-78, 2022 01.
Article in English | MEDLINE | ID: mdl-34096376

ABSTRACT

INTRODUCTION: According to the Centers for Disease Control and Prevention, Ebola has affected the lives of thousands, including health care workers. With few studies describing the experience of nurses who survived Ebola, the study aimed to describe Ugandan nurses' experiences. METHOD: Using a phenomenological design, in-depth interviews were conducted among five Ugandan nurses who contracted Ebola and survived. RESULT: Thematic analysis revealed themes of expectations of dying, hopelessness, loneliness, and betrayal by family, community, and the health system. DISCUSSION: Results support the need for policies targeting holistic practice protocols to protect all health care professionals during future outbreaks. Last, nursing survivors should have access to government-guaranteed support programs, including free health care and financial stipends. These results and recommendations transcend to the current reality of living with COVID-19 (coronavirus disease 2019). Efficient practice protocols could protect all rights and privileges and contribute to access to treatment and stigma removal.


Subject(s)
COVID-19 , Hemorrhagic Fever, Ebola , Disease Outbreaks , Hemorrhagic Fever, Ebola/prevention & control , Humans , SARS-CoV-2 , Uganda
9.
Front Immunol ; 12: 721328, 2021.
Article in English | MEDLINE | ID: mdl-34526994

ABSTRACT

The unprecedented 2013-2016 West Africa Ebola outbreak accelerated several medical countermeasures (MCMs) against Ebola virus disease (EVD). Several investigational products (IPs) were used throughout the outbreak but were not conclusive for efficacy results. Only the Randomized Controlled Trial (RCT) on ZMapp was promising but inconclusive. More recently, during the second-largest Ebola outbreak in North Kivu and Ituri provinces, Democratic Republic of the Congo (DRC), four IPs, including one small molecule (Remdesivir), two monoclonal antibody (mAb) cocktails (ZMapp and REGN-EB3) and a single mAb (mAb114), were evaluated in an RCT, the Pamoja Tulinde Maisha (PALM) study. Two products (REGN-EB3 and mAb114) demonstrated efficacy as compared to the control arm, ZMapp. There were remarkably few side effects recorded in the trial. The FDA approved both medications in this scientifically sound study, marking a watershed moment in the field of EVD therapy. These products can be produced relatively inexpensively and can be stockpiled. The administration of mAbs in EVD patients appears to be safe and effective, while several critical knowledge gaps remain; the impact of early administration of Ebola-specific mAbs on developing a robust immune response for future Ebola virus exposure is unknown. The viral mutation escape, leading to resistance, presents a potential limitation for single mAb therapy; further improvements need to be explored. Understanding the contribution of Fc-mediated antibody functions such as antibody-dependent cellular cytotoxicity (ADCC) of those approved mAbs is still critical. The potential merit of combination therapy and post-exposure prophylaxis (PEP) need to be demonstrated. Furthermore, the PALM trial has accounted for 30% of mortality despite the administration of specific treatments. The putative role of EBOV soluble Glycoprotein (sGP) as a decoy to the immune system, the virus persistence, and relapses might be investigated for treatment failure. The development of pan-filovirus or pan-species mAbs remains essential for protection. The interaction between FDA-approved mAbs and vaccines remains unclear and needs to be investigated. In this review, we summarize the efficacy and safety results of the PALM study and review current research questions for the further development of mAbs in pre-exposure or emergency post-exposure use.


Subject(s)
Antibodies, Monoclonal/therapeutic use , Antiviral Agents/therapeutic use , Ebolavirus/drug effects , Hemorrhagic Fever, Ebola/drug therapy , Hemorrhagic Fever, Ebola/virology , Animals , Antibodies, Monoclonal/pharmacology , Antigens, Viral/immunology , Antiviral Agents/pharmacology , Clinical Studies as Topic , Drug Approval , Drug Evaluation, Preclinical , Ebola Vaccines , Ebolavirus/immunology , Hemorrhagic Fever, Ebola/mortality , Hemorrhagic Fever, Ebola/prevention & control , Humans , Prognosis , Treatment Failure , Treatment Outcome , United States , United States Food and Drug Administration , Vaccination
10.
Viruses ; 13(9)2021 09 08.
Article in English | MEDLINE | ID: mdl-34578374

ABSTRACT

Ebola virus (EBOV), one of the most infectious human viruses and a leading cause of viral hemorrhagic fever, imposes a potential public health threat with several recent outbreaks. Despite the difficulties associated with working with this pathogen in biosafety level-4 containment, a protective vaccine and antiviral therapeutic were recently approved. However, the high mortality rate of EBOV infection underscores the necessity to continuously identify novel antiviral strategies to help expand the scope of prophylaxis/therapeutic management against future outbreaks. This includes identifying antiviral agents that target EBOV entry, which could improve the management of EBOV infection. Herein, using EBOV glycoprotein (GP)-pseudotyped particles, we screened a panel of natural medicinal extracts, and identified the methanolic extract of Perilla frutescens (PFME) as a robust inhibitor of EBOV entry. We show that PFME dose-dependently impeded EBOV GP-mediated infection at non-cytotoxic concentrations, and exerted the most significant antiviral activity when both the extract and the pseudoparticles are concurrently present on the host cells. Specifically, we demonstrate that PFME could block viral attachment and neutralize the cell-free viral particles. Our results, therefore, identified PFME as a potent inhibitor of EBOV entry, which merits further evaluation for development as a therapeutic strategy against EBOV infection.


Subject(s)
Antiviral Agents/pharmacology , Ebolavirus/drug effects , Ebolavirus/physiology , Perilla frutescens/chemistry , Plant Extracts/pharmacology , Viral Envelope Proteins , Virus Internalization/drug effects , Ebolavirus/chemistry , Ebolavirus/genetics , HEK293 Cells , Humans , Methanol/chemistry , Methanol/pharmacology , Plant Extracts/chemistry , Viral Envelope Proteins/genetics
11.
Article in English | MEDLINE | ID: mdl-33806086

ABSTRACT

Fourteen years of civil war left Liberia with crumbling infrastructure and one of the weakest health systems in the world. The 2014-2015 Ebola virus disease (EVD) outbreak exposed the vulnerabilities of the Liberian health system. Findings from the EVD outbreak highlighted the lack of infection prevention and control (IPC) practices, exacerbated by a lack of essential services such as water, sanitation, and hygiene (WASH) in healthcare facilities. The objective of this intervention was to improve IPC practice through comprehensive WASH renovations conducted at two hospitals in Liberia, prioritized by the Ministry of Health (MOH). The completion of renovations was tracked along with the impact of improvements on hand hygiene (HH) practice audits of healthcare workers pre- and post-intervention. An occurrence of overall HH practice was defined as the healthcare worker practicing compliant HH before and after the care for a single patient encounter. Liberia Government Hospital Bomi (LGH Bomi) and St. Timothy Government Hospital (St. Timothy) achieved World Health Organization (WHO) minimum global standards for environmental health in healthcare facilities as well as Liberian national standards. Healthcare worker (HCW) overall hand hygiene compliance improved from 36% (2016) to 89% (2018) at LGH Bomi hospital and from 86% (2016) to 88% (2018) at St. Timothy hospital. Improved WASH services and IPC practices in resource-limited healthcare settings are possible if significant holistic WASH infrastructure investments are made in these settings.


Subject(s)
Epidemics , Hand Hygiene , Hemorrhagic Fever, Ebola , Hemorrhagic Fever, Ebola/epidemiology , Hemorrhagic Fever, Ebola/prevention & control , Humans , Hygiene , Liberia/epidemiology , Sanitation , Water
12.
BMC Infect Dis ; 21(1): 324, 2021 Apr 07.
Article in English | MEDLINE | ID: mdl-33827424

ABSTRACT

BACKGROUND: Ebola virus disease (EVD) is a severe, often fatal illness in humans and nonhuman primates caused by the Ebola virus. The recently approved rVSV-EBOV vaccine is not available in many high-risk countries hence prevention is paramount. The design of effective prevention interventions requires an understanding of the factors that expose communities at risk. It was based on this that we investigated the Baka community of Abong-Mbang Health District in tropical rain forest of Cameroon. METHODS: A cross-sectional study was conducted with participants randomly selected from 13 villages in Abong-Mbang by multi-stage cluster sampling. A questionnaire was administered to them to collect demographic information, data on knowledge of EVD, their feeding and health-seeking behaviour. Data was analyzed using the chi-square test. Knowledge of EVD was assessed using an 8 item Morisky Scale. An adapted Threat Capability Basic Risk Assessment Guide was used to determine their risk of exposure to infection. RESULTS: A total of 510 participants, most of whom were hunters (31.4%), farmers (29.8%), and had primary education (62.7%), were included in this study. Although 83.3% participants had heard of EVD, most (71%) did not know its cause. Their source of information was mainly informal discussions in the community (49%). Misconceptions were identified with regards to the cause and mode of transmission. Only 43.1% accepted EVD could be transmitted from human-to-human. Generally, participants' knowledge of EVD was poor. Demographic factors such as level of education, occupation and ethnic group significantly affected knowledge of EVD. The majority of participants were at a very high risk of exposure to infection as they consumed various forms of bush meat and were involved in other risky practices such as scarification and touching of corpses. Although over half of participants seek medical care, most of them preferred traditional medicine. Socio-cultural and service-related factors were deterrent factors to medical care. CONCLUSION: Participants generally had poor knowledge of EVD and were at high risk of infection. We recommend rigorous sensitization campaigns in the study area to educate the population on EVD and clarify the misconceptions identified. EVD surveillance is recommended particularly as outbreaks have often been reported in the Congo Basin.


Subject(s)
Ebolavirus , Health Knowledge, Attitudes, Practice , Hemorrhagic Fever, Ebola/transmission , Adolescent , Adult , Cameroon , Cross-Sectional Studies , Female , Hemorrhagic Fever, Ebola/epidemiology , Hemorrhagic Fever, Ebola/etiology , Humans , Male , Middle Aged , Rainforest , Risk Factors , Surveys and Questionnaires , Young Adult
13.
Global Health ; 17(1): 46, 2021 04 14.
Article in English | MEDLINE | ID: mdl-33853631

ABSTRACT

Health innovations are generally oriented on a techno-economic vision. In this perspective, technologies are seen as an end in themselves, and there is no arrangement between the technical and the social values of innovation. This vision prevails in sanitary crises, in which management is carried out based on the search for punctual, reactive, and technical solutions to remedy a specific problem without a systemic/holistic, sustainable, or proactive approach. This paper attempts to contribute to the literature on the epistemological orientation of innovations in the field of public health. Taking the Covid-19 and Ebola crises as examples, the primary objective is to show how innovation in health is oriented towards a techno-economic paradigm. Second, we propose a repositioning of public health innovation towards a social paradigm that will put more emphasis on the interaction between social and health dimensions in the perspective of social change. We will conclude by highlighting the roles that public health could play in allowing innovations to have more social value, especially during sanitary crises.


Subject(s)
Biomedical Technology , COVID-19/therapy , Health Care Reform , Health Priorities , Hemorrhagic Fever, Ebola/therapy , Public Health , Access to Information , COVID-19/prevention & control , Cost-Benefit Analysis , Diffusion of Innovation , Health Equity , Health Services Accessibility , Hemorrhagic Fever, Ebola/prevention & control , Humans , Pharmaceutical Preparations , Social Conditions , Social Environment , Social Values , Technology , Vaccines
14.
Public Health Nutr ; 24(1): 139-145, 2021 01.
Article in English | MEDLINE | ID: mdl-32814598

ABSTRACT

OBJECTIVE: To evaluate the inclusion and exclusion of nutritional content in guidance materials related to nutritional care for hospitalised Ebola Virus Disease (EVD) patients of any age with the aim to provide recommendations for future revised nutritional care guidelines in Ebola Treatment Units (ETU). DESIGN: Qualitative and quantitative analyses of ETU protocols and other guidance materials were conducted. Materials were obtained from practitioners, their organisations and governments active in EVD outbreaks since 2014. SETTING: Guinea, Liberia, Sierra Leone and Democratic Republic of Congo. RESULTS: Guidance materials showed a wide variety of topics. Most contained information on different feeding phases during illness, the use of specialised products, what and how to feed children aged 0-23 months, and meal and snack frequency for different age groups. Most materials lacked guidance on how to assess or accommodate patients' dietary preferences, how to obtain feedback on nutritional care from patients or how to assess whether patients need feeding support. These aspects are particularly relevant to prevent deterioration of the patients' nutritional status. There was limited guidance on operational aspects of food preparation and provision. CONCLUSIONS: Since 2014, numerous materials have been developed by organisations and governments on nutritional support in ETU. Although every EVD outbreak response must be contextualised because of the complexity of EVD and its case management, it is important to resolve technical differences and to provide comprehensive and more practical guidance. The findings of this study may inform future revised guidelines from normative UN organisations and governments of countries affected by EVD.


Subject(s)
Hemorrhagic Fever, Ebola , Nutritional Support , Adolescent , Adult , Child , Congo , Female , Hemorrhagic Fever, Ebola/rehabilitation , Humans , Lactation , Liberia , Male , Middle Aged , Sierra Leone , Young Adult
15.
Sex Reprod Health Matters ; 28(1): 1818376, 2020 Dec.
Article in English | MEDLINE | ID: mdl-33073741

ABSTRACT

This study provides insight into the extent to which public commitment to reduce teenage pregnancy made by the President of Sierra Leone made the issue a political priority and the factors that facilitated and hindered this. Using historical observations from government and civil society actors who were involved in the formulation and implementation of the country's National Strategy for the Reduction of Teenage Pregnancy (NSRTP), the study presents lessons learnt, with a particular focus on advocacy. It does not examine the extent to which the NSRTP was operationalised and its objectives fulfilled. Findings indicate that the availability of locally relevant data as well as advocacy from international and national NGOs were factors that led to the President's commitment and the development of a national strategy. Whilst continued verbal support from political leaders and administrative mechanisms for implementation assured that teenage pregnancy reduction stayed on the political agenda, the scarcity of resources as well as the necessary diversion of efforts and resources to the Ebola epidemic impeded implementation. Overall, the findings demonstrate that public commitments made by political leaders - starting with President Ernest Bai Koroma's public declaration in 2012 - kick-started efforts to reduce teenage pregnancy in Sierra Leone; and that despite inadequate human and financial resources for the implementation of the NSRTP, actions taken by both the government and partners over time have contributed to tangible progress.


Subject(s)
Health Priorities , Policy Making , Politics , Pregnancy in Adolescence/prevention & control , Public Policy , Adolescent , Female , Humans , National Health Programs , Organizations , Pregnancy , Sierra Leone
16.
Viruses ; 12(9)2020 08 22.
Article in English | MEDLINE | ID: mdl-32842671

ABSTRACT

Filoviruses, including Ebola virus (EBOV) and Marburg virus (MARV), cause severe hemorrhagic fever in humans and nonhuman primates with high mortality rates. There is no approved therapy against these deadly viruses. Antiviral drug development has been hampered by the requirement of a biosafety level (BSL)-4 facility to handle infectious EBOV and MARV because of their high pathogenicity to humans. In this study, we aimed to establish a surrogate animal model that can be used for anti-EBOV and -MARV drug screening under BSL-2 conditions by focusing on the replication-competent recombinant vesicular stomatitis virus (rVSV) pseudotyped with the envelope glycoprotein (GP) of EBOV (rVSV/EBOV) and MARV (rVSV/MARV), which has been investigated as vaccine candidates and thus widely used in BSL-2 laboratories. We first inoculated mice, rats, and hamsters intraperitoneally with rVSV/EBOV and found that only hamsters showed disease signs and succumbed within 4 days post-infection. Infection with rVSV/MARV also caused lethal infection in hamsters. Both rVSV/EBOV and rVSV/MARV were detected at high titers in multiple organs including the liver, spleen, kidney, and lungs of infected hamsters, indicating acute and systemic infection resulting in fatal outcomes. Therapeutic effects of passive immunization with an anti-EBOV neutralizing antibody were specifically observed in rVSV/EBOV-infected hamsters. Thus, this animal model is expected to be a useful tool to facilitate in vivo screening of anti-filovirus drugs targeting the GP molecule.


Subject(s)
Disease Models, Animal , Ebolavirus/genetics , Marburgvirus/genetics , Vesicular Stomatitis/virology , Vesiculovirus/genetics , Viral Envelope Proteins/genetics , Animals , Antibodies, Viral/administration & dosage , Cricetinae , Disease Susceptibility , Drug Evaluation, Preclinical , Ebolavirus/immunology , Mesocricetus , Mice , Rats , Vaccines, Synthetic , Vesicular Stomatitis/pathology , Vesicular Stomatitis/prevention & control , Vesicular Stomatitis/therapy , Vesiculovirus/pathogenicity , Viral Envelope Proteins/immunology , Viral Load
17.
Eur J Med Chem ; 203: 112653, 2020 Oct 01.
Article in English | MEDLINE | ID: mdl-32693294

ABSTRACT

Flavaglines are cyclopenta[b]benzofurans found in plants of the genus Aglaia, several species of which are used in traditional Chinese medicine. These compounds target the initiation factor of translation eIF4A and the scaffold proteins prohibitins-1 and 2 (PHB1/2) to exert various pharmacological activities, including antiviral effects against several types of viruses, including coronaviruses. This review is focused on the antiviral effects of flavaglines and their therapeutic potential against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).


Subject(s)
Aglaia/chemistry , Antiviral Agents/therapeutic use , Biological Products/therapeutic use , Coronavirus Infections/drug therapy , Eukaryotic Initiation Factor-4A/genetics , Pneumonia, Viral/drug therapy , Repressor Proteins/genetics , Animals , COVID-19 , Eukaryotic Initiation Factor-4A/drug effects , Humans , Medicine, Chinese Traditional , Pandemics , Prohibitins , Repressor Proteins/drug effects
18.
BMC Complement Med Ther ; 20(1): 137, 2020 May 06.
Article in English | MEDLINE | ID: mdl-32375765

ABSTRACT

BACKGROUND: Considerable number of patients, including Ebola survivors, in Sierra Leone, are using traditional and complementary medicine (T&CM). Healthcare providers' (HCPs) views about T&CM is crucial in addressing the increased need for T&CM among patients. However, healthcare providers' views about T&CM in Sierra Leone is unknown. Our study explores healthcare providers' knowledge of and perception towards T&CM and how that influence their personal and professional T&CM use, communication with Ebola survivors about T&CM as well as its integration into the healthcare system in Sierra Leone. METHODS: We employed a qualitative exploratory study design using semi-structured interviews to collect data from 15 conveniently sampled HCPs in all four geographical regions of Sierra Leone. We analysed our data using thematic network analysis framework. RESULTS: Healthcare providers perceived their knowledge about T&CM to be low and considered T&CM to be less effective and less safe than conventional medicine as well as not evidence-based. HCPs perception of T&CM as non-scientific and their lack of knowledge of T&CM were the key barriers to HCPs' self-use and recommendation as well as their lack of detailed discussion about T&CM with Ebola survivors. HCPs are open to T&CM integration into mainstream healthcare in Sierra Leone although at their terms. However, they believe that T&CM integration could be enhanced by effective professional regulation of T&CM practice, and by improving T&CM evidenced-based knowledge through education, training and research. CONCLUSION: Changing HCPs' negative perception of and increasing their knowledge about T&CM is critical to promoting effective communication with Ebola survivors regarding T&CM and its integration into the healthcare system in Sierra Leone. Strategies such as educational interventions for HCPs, conducting rigorous T&CM research, proper education and training of T&CM practitioners and effective professional regulation of T&CM practice could help in that direction.


Subject(s)
Attitude of Health Personnel , Complementary Therapies , Hemorrhagic Fever, Ebola/therapy , Survivors , Adult , Female , Humans , Male , Middle Aged , Qualitative Research , Sierra Leone
19.
Complement Ther Clin Pract ; 39: 101127, 2020 May.
Article in English | MEDLINE | ID: mdl-32379665

ABSTRACT

BACKGROUND: and Purpose: This study explores Ebola survivors' healthcare-seeking experiences within the context of Sierra Leone's free healthcare initiative (FHCI) and comprehensive package for Ebola survivors (CPES) program while also exploring the enablers and barriers to their use of informal healthcare. MATERIALS AND METHODS: We employed an inductive, exploratory qualitative approach using focus group discussion with 41 adults Ebola survivors in the four administrative regions of Sierra Leone. RESULTS: Biomedical care was the first choice of treatment option for most survivors immediately following post-ETC discharge. Survivors' healthcare-seeking experience varies before and after their inclusion into FHCI and the establishment of the CPES program. Personal and health system factors influenced survivors' decision to seek multiple healthcare approaches, especially T&CM. CONCLUSION: Our findings suggest the determinants of Ebola survivors' healthcare-seeking experiences should be considered when developing and implementing programs aimed at improving the current health status of Ebola survivors in Sierra Leone.


Subject(s)
Delivery of Health Care/statistics & numerical data , Hemorrhagic Fever, Ebola/therapy , Medicine, Traditional/statistics & numerical data , Survivors/statistics & numerical data , Adolescent , Adult , Female , Focus Groups , Humans , Male , Middle Aged , Sierra Leone , Young Adult
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