COVID-19 and COVID-19 vaccination experiences and perceptions among health workers during the pandemic in Ebonyi state, Nigeria: An analytical cross-sectional study.

BACKGROUND: COVID-19 continues to be a disease of global public health importance and requires long-term management and control. Health workers' (previous) experiences and perceptions regarding the COVID-19 pandemic and COVID-19 vaccination/vaccination process will influence not only their subsequent use of control measures but also public experiences/perceptions. We explored the COVID-19 and COVID-19 vaccination and the vaccination process experiences and perceptions, and their predictors, among the health workers in Ebonyi state, Nigeria. METHODS: We conducted an online-offline analytical cross-sectional survey between March 12 and May 9, 2022 among all categories of health workers (clinical/non-clinical, public/private) working/living in Ebonyi state who consented to participate and were selected by convenience/snowballing techniques. A structured electronic questionnaire was used to collect data: self-administered via WhatsApp and interviewer-administered via KoBoCollect for participants who did not have WhatsApp. Data was analysed using descriptive statistics and bivariate/multivariate generalized linear models. RESULTS: Of the 1276 health workers surveyed: 55.8% had strong COVID-19 experience and perception, 80.7% had good COVID-19 vaccination expectation and perception, and 87.7% had positive COVID-19 vaccination process experience and perception. The most important predictors of the extent and level of COVID-19 and COVID-19 vaccination and the vaccination process experiences and perceptions were level of place of work (primary-secondary/tertiary), level of attitude towards COVID-19 (vaccination), and level of knowledge about COVID-19. Another important predictor was place of work (public/private). CONCLUSIONS: The evidence indicate the factors that should guide subsequent policy actions in the strategies to enhance the COVID-19 and COVID-19 vaccination and the vaccination process experiences and perceptions of health workers (and their use of control measures) in Ebonyi state, Nigeria, and other similar contexts. It also indicate factors to be considered by future policy actions regarding similar diseases.

COVID-19 information sources, knowledge, attitude, control practices and the predictors among health workers during the pandemic in Ebonyi state, Nigeria.

The COVID-19 pandemic has changed into an endemic COVID-19 disease and health workers continue to be at high risk. The situation requires continued use of COVID-19 control measures by health workers and this will likely depend on their sources of information/knowledge/attitude about COVID-19 and previous use of COVID-19 control measures. We explored the COVID-19 information sources, knowledge, attitude, control practices, and the predictors, among health workers in Ebonyi state, Nigeria. We implemented an online-offline analytical cross-sectional survey from March 12 to May 9, 2022 among all categories of health workers (clinical/non-clinical, public/private) working/living in Ebonyi state who gave consent and were selected via convenience/snowballing sampling. Data was collected with a structured self-administered/interviewer-administered questionnaire via WhatsApp/KoBoCollect. Descriptive/inferential analyses were done including multivariate generalized linear models. 1276 health workers were surveyed. The commonest individual source of information about COVID-19 was health workers (used by 83.8%), followed by radio (67.9%), television (59.6%), family members/relatives/friends (57.9%) etc. The main individual source of information for majority of the participants was health workers (for 35.0%) followed by radio (24.5%), television (14.4%) etc. The most trusted individual source of information for majority of the participants was health workers (for 39.4%) followed by radio (26.0%), television (14.3%) etc. Interpersonal sources were the main/most trusted source of information for the majority (48.0%/49.8%) followed by traditional media (39.4%/40.6%) and internet/social media/SMS (12.6%/9.6%). 42.3%, 81.3%, and 43.0% respectively had good knowledge, good attitude, and good control practice about COVID-19. The most important predictors of the main/most trusted sources of information about COVID-19 were place of work (public/private), level of place of work (primary-secondary/tertiary), age, and years of working experience. Good knowledge about COVID-19, good attitude towards COVID-19, strong COVID-19 experience/perception, working at a tertiary facility, tertiary education, and decrease in years of working experience were strong predictors of good control practice about COVID-19. This study's evidence regarding the commonest/main/most trusted information sources and control practice about COVID-19 should be considered by later COVID-19/similar health emergencies' policy actions to optimise emergency health information dissemination and use of control measures by health workers in Ebonyi state/Nigeria/other similar settings.

COVID-19 and COVID-19 vaccination experiences and perceptions and their predictors among community members during the COVID-19 pandemic in Ebonyi state, Nigeria: an analytical cross-sectional study.

BACKGROUND: COVID-19 is still a disease of global public health importance which requires long term application of control measures as millions of new infections or re-infections and thousands of related deaths still occur worldwide and the risk of an upsurge from new strains of the virus continues to be a threat. The decrease in the use of and non-use of preventive public health measures are among the factors fuelling the disease. The (previous) experiences and perceptions of people regarding the COVID-19 pandemic, COVID-19 vaccination, and the vaccination process are factors that will influence subsequent use of preventive/control measures. We explored the COVID-19 and COVID-19 vaccination and the vaccination process experiences and perceptions, and their predictors, among the community members in Ebonyi state, Nigeria. METHODS: We conducted an analytical cross-sectional study between March 12 and May 9, 2022 among all consenting/assenting community members aged 15 years and above in 28 randomly selected geographical clusters. A structured interviewer-administered electronic questionnaire in KoBoCollect installed in android devices was used to collect data which was analysed using descriptive statistics and bivariate and multivariate generalized estimating equations. RESULTS: Of the 10,825 community members surveyed: only 31.6% had strong COVID-19 experience and perception, 72.2% had good COVID-19 vaccination expectation and perception, and only 54.2% had positive COVID-19 vaccination process experience and perception. The most important predictors of the extent/level of COVID-19 and COVID-19 vaccination and the vaccination process experiences and perceptions were level of attitude towards COVID-19 and COVID-19 vaccination and level of knowledge about COVID-19. Other important predictors were marital status, educational level, and main occupation. CONCLUSIONS: This study's evidence, including the identified predictors, will inform subsequent policy actions regarding COVID-19 in the strategies to improve the COVID-19 and COVID-19 vaccination and the vaccination process experiences and perceptions of community members (and their use of preventive/control measures) in Ebonyi state and Nigeria, and other similar contexts. It will also inform future policy actions/strategies regarding similar diseases.

COVID-19 vaccination acceptance (uptake, hesitancy, intention to receive and timeliness of the intention to receive) and the determinants among health workers in Ebonyi state, Nigeria: an analytical cross-sectional study.

OBJECTIVES: Health workers are at particular risk of contracting the COVID-19. However, non-acceptance of COVID-19 vaccination has been a noticeable challenge the world over and in Nigeria where supply constraints have also been an issue. We evaluated COVID-19 vaccination acceptance (the uptake, hesitancy, intention to receive and timeliness of the intention to receive) and the determinants, and the predictive power of acceptance factor compared with availability/access factor, among health workers in Ebonyi state. METHODS: We conducted an online-offline survey, between 12 March 2022 and 9 May 2022, among all consenting health workers (clinical/non-clinical, public/private) working/living in Ebonyi state and who were selected by convenience and snowballing techniques. Data were collected using structured self-administered questionnaire distributed via WhatsApp and interviewer-administered questionnaire in KoBoCollect installed in android devices. Data were analysed using descriptive statistics and generalised linear models. RESULTS: 1276 health workers were surveyed. Uptake was 68.2% vaccinated, 47.4% fully vaccinated and 20.9% partially vaccinated. Hesitancy was 22.6% or 71.2% among the unvaccinated (76.3% of hesitancy due to refusal and 23.7% to delay). Intention to receive was 36.0% of which 55.1% gave the intended time (days) to receive with a median (IQR) of 30 days (7-133). The strongest and most important predictor of COVID-19 vaccination acceptance was COVID-19 vaccination expectations and perceptions. Other important predictors were COVID-19/COVID-19 vaccination process experiences and perceptions. Acceptance factor was a stronger predictor compared with availability/access factor. CONCLUSION: The slow pace of COVID-19 vaccination coverage among the health workers in Ebonyi state/Nigeria may encounter a bottle-neck due to the high refusal rate among the unvaccinated. COVID-19 vaccination policy interventions in Nigeria and other similar settings should, in addition to sustaining availability and access, prioritise improvement of COVID-19 vaccination expectations and perceptions (regarding importance/safety/effectiveness) and COVID-19 risk communication among the health workers. TRIAL REGISTRATION NUMBER: ISRCTN16735844.

Study protocol for a cluster-randomised controlled trial of hybrid parents and health workers adaptive intervention for optimal routine childhood immunisation coverage in the communities of Ebonyi state, Nigeria: the AGINTOPIC trial protocol.

INTRODUCTION: Vaccine-preventable infectious diseases (VPDs) are major causes of morbidity/mortality among children under 5 years of age worldwide and in Nigeria/Ebonyi state. Routine childhood immunisation is an invaluable prevention strategy for many VPDs. Due to suboptimal coverage and untimely receipt/delay in receipt of vaccinations, outbreaks of VPDs such as measles, yellow fever, diphtheria and others continue to reoccur around the world and in Nigeria/Ebonyi state. This study aims to evaluate the effectiveness of hybrid parents and health workers adaptive intervention in increasing the optimal/timely (cumulative age-appropriate) routine childhood immunisation coverage in the communities in Ebonyi state, Nigeria. METHODS AND ANALYSES: A two-arm, parallel, open label, covariate-constrained cluster-randomised controlled trial with 1:1 allocation of 16 geographical clusters (the nearest catchment areas for at least one public primary healthcare (PHC) facility with at least 500 households or a population size of 3000) will be used to evaluate the effects of hybrid/combined parents and PHC workers adaptive engagement compared with control. The primary outcomes are the optimal/timely (cumulative age-appropriate) receipt of the recommended vaccines in the routine childhood immunisation schedule by children aged 5-9 completed months and 10-11 completed months and the age-appropriate vaccines receipt score for the recommended vaccines. The outcomes will be measured through a population-based household survey of at least 15 children aged 5-9 and 10-11 months per cluster at baseline and at the end of the study using a structured interviewer-administered questionnaire in KoBoCollect installed in android devices. All analyses will be done using a cluster-level method on as-randomised basis. ETHICS AND DISSEMINATION: Ethical approval for the trial was obtained from the Ebonyi State Health Research and Ethics Committee (EBSHREC/01/06/2022-31/05/2023) and verbal consent will be obtained from participants. Study findings will be reported at local/national and international levels as appropriate. TRIAL REGISTRATION NUMBER: ISRCTN59811905.

COVID-19 vaccination acceptance among community members and health workers in Ebonyi state, Nigeria: study protocol for a concurrent-independent mixed method analyses of intention to receive, timeliness of the intention to receive, uptake and hesitancy to COVID-19 vaccination and the determinants.

INTRODUCTION: The COVID-19 pandemic has gravely affected the lives and economies of the global population including Nigeria. The attainment of herd immunity through mass COVID-19 vaccination is the foremost control strategy, however, the deployments of COVID-19 vaccinations are facing challenges of non-acceptance. Despite the efforts of the Nigerian government and COVAX facility in making COVID-19 vaccination more available/accessible, the vaccination rate remains unexpectedly very low in Nigeria/Ebonyi state. Therefore, it is important to investigate the acceptability of COVID-19 vaccination to elucidate the explanations for the very low coverage rate. This study aims to evaluate/explore COVID-19 vaccination acceptance and the determinants among community members and health workers in Ebonyi state, Nigeria. METHODS AND ANALYSES: The study is an analytical cross-sectional survey with a concurrent-independent mixed method design. Quantitative data will be collected from all consenting/assenting community members aged 15 years and above, in 28 randomly selected geographical clusters, through structured interviewer-administered questionnaire household survey using KoBoCollect installed in android devices. Quantitative data will be collected from all consenting health workers, selected via convenience and snowball techniques, through structured self-administered questionnaire survey distributed via WhatsApp and interviewer-administered survey using KoBoCollect installed in android devices. Qualitative data will be collected from purposively selected community members and health workers through focus group discussions. Quantitative analyses will involve descriptive statistics, generalised estimating equations (for community members data) and generalised linear model (for health workers data). Qualitative analyses will employ the thematic approach. ETHICS AND DISSEMINATION: Ethical approval for this study was obtained from the Ebonyi State Health Research and Ethics Committee (EBSHREC/15/01/2022-02/01/2023) and Research and Ethics Committee of Alex Ekwueme Federal University Teaching Hospital Abakaliki (14/12/2021-17/02/2022), and verbal consent will be obtained from participants. Study findings will be reported at local, national and international levels as appropriate. TRIAL REGISTRATION NUMBER: ISRCTN16735844.

[Anatomy for ablation of ventricular extrasystoles and tachycardia in the right ventricle]. / Anatomie für die Ablation ventrikulärer Extrasystolen und Tachykardien im rechten Ventrikel.

BACKGROUND: Catheter ablation of ventricular tachycardias (VTs) is one of the most complex tasks in interventional electrophysiology. It is complicated by the fact that VT can recur during treatment which can affect the hemodynamic stability of the patient. In addition, navigation with the ablation or mapping catheter through the valvular apparatus and the trabecularization of the ventricle can be challenging. MATERIALS AND METHODS: In most cases, a three-dimensional mapping system is used to facilitate orientation and the search for the site where the tachycardia originates. Access to the right ventricle is usually via the tricuspid valve, but in exceptional cases it may also be necessary to use the epicardial venous system. The structures most commonly responsible for an arrhythmia from the right ventricle are the right ventricular outflow tract, the moderator band and the tricuspid valve annulus. The right ventricle is adjacent to vulnerable neighboring structures in many places: In the right ventricular outflow tract, the sinus valsalva, the pulmonary artery and the left ventricular endocardial transition between the aortic and mitral valves must be considered. When ablating along the tricuspid valve annulus, the proximity to the septum and thus to the specific conduction system is particularly important. CONCLUSION: Knowledge of the surrounding structures helps, on the one hand, to draw the right conclusions about the point of origin in the surface ECG, and, on the other hand, to carry out the ablation successfully and safely.

Women and Science

The Women and Science page provides a central access point for detailed information on European Union gender related activities in the domain of research and technological development The website provides details on research, policy documents, and indicator data on gender distribution and women's participation in research. There are also events, and a virtual for young researchers. The page is part of the EU's CORDIS web site (Community Research and Development Information Service)

Europa. CORDIS. Servicio de Información Comunitario sobre Investigación y Desarrollo

Proporciona acceso a información sobre investigación, desarrollo e investigación impulsados por la Comisión Europea.Contiene noticias sobre las investigaciones que responden a los objetivos de la UE, incluyendo las actualizaciones periódicas de cada Presidencia del Consejo, y ofrece a los usuarios un servicio de alerta por correo eléctronico y RSS. Dispone también de una serie de bases de datos que incluyen noticias, programas de investigación, siglas utilizadas en la investigación y el desarrollo, listas de posibles socios para la colaboración europea, incluidos documentos oficiales relativos a la legislación de la UE sobre el tema. La información se ofrece inglés, francés, alemán, italiano y español.

Niacin-bound chromium enhances myocardial protection from ischemia-reperfusion injury.

A novel niacin-bound, chromium-based energy formula (EF; InterHealth Nutraceuticals, Benicia, CA) has been developed in conjunction with D-ribose, caffeine, ashwagandha extract (containing 5% withanolides), and selected amino acids. We have assessed the efficacy of oral administration of EF (40 mg x kg body wt(-1) x day(-1)) in male and female rats over a period of 90 consecutive days on the cardiovascular and pathophysiological functions in an isolated rat heart model. After 30, 60, and 90 days of treatment with EF, the hearts of male and female rats were subjected to 30 min of global ischemia followed by 2 h of reperfusion and were measured for myocardial ATP, creatine phosphate (CP), phosphorylated AMP kinase (p-AMPK), and heat shock proteins. Myocardial ATP and CP levels were increased in both male and female rats after EF treatment compared with the controls. Western blot analyses were performed to quantify the expression of stress-related proteins such as heat shock proteins (HSP-70, -32, and -25) and are found to be increased in both male and female rats after EF treatment. The p-AMPK level, which is a sensor for the energy state in various cell types, was also found to be increased after treatment with EF in both male and female rats. Aortic flow, maximum first derivative of developed pressure, left ventricular developed pressure, and infarct size were observed after ischemia-reperfusion and found to be significantly improved in EF-treated rats compared with control animals. Thus EF demonstrated long-term safety as well as exhibiting significant cardioprotective ability during ischemia and reperfusion injury by increased energy production, improved cardiac function, and reduced infarct size.

Cardioprotection with palm tocotrienol: antioxidant activity of tocotrienol is linked with its ability to stabilize proteasomes.

Tocotrienols, isomers of vitamin E, have been found to possess many health benefits. The present study was designed to determine whether tocotrienol has a direct cardioprotective role. Isolated rat hearts were perfused for 15 min with Krebs-Ringer bicarbonate buffer in the absence or presence of palm tocotrienol derived from the tocotrienol-rich fraction (0.035%) of palm oil (TRF). In another group of studies, the hearts were preperfused for 15 min in the presence of a c-Src inhibitor, 4-amino-5-(4-methylphenyl)-7-(t-butyl)-pyrazolo-3,4-d-pyrimidine (PPI). The hearts were then subjected to 30 min of global ischemia followed by 2 h of reperfusion. As expected, ischemia-reperfusion caused ventricular dysfunction, electrical rhythm disturbances, and increased myocardial infarct size. PPI or TRF could reverse the ischemia-reperfusion-mediated cardiac dysfunction. Ischemia-reperfusion also upregulated c-Src expression and phosphorylation. Although TRF only minimally affected c-Src expression, it significantly inhibited the phosphorylation of c-Src. Ischemia-reperfusion reduced 20S and 26S proteasome activities, an effect prevented by TRF pretreatment. PPI exerted a cardioprotective effect that is not mediated by the proteasome but, rather, through direct inhibition of c-Src. The results of this study support a role for c-Src in postischemic cardiac injury and dysfunction and demonstrate direct cardioprotective effects of TRF. The cardioprotective properties of TRF appear to be due to inhibition of c-Src activation and proteasome stabilization.

Pharmacological preconditioning with resveratrol: role of CREB-dependent Bcl-2 signaling via adenosine A3 receptor activation.

Recent studies demonstrated that resveratrol, a grape-derived polyphenolic phytoalexin, provides pharmacological preconditioning (PC) of the heart through a NO-dependent mechanism. Because adenosine receptors play a role in PC, we examined whether they play any role in resveratrol PC. Rats were randomly assigned to groups perfused for 15 min with 1) Krebs-Henseleit bicarbonate buffer (KHB) only; 2) KHB containing 10 microM resveratrol; 3) 10 microM resveratrol + 1 microM 8-cyclopentyl-1,3-dimethylxanthine (CPT; adenosine A(1) receptor blocker); 4) 10 microM resveratrol + 1 microM 8-(3-chlorostyryl)caffeine (CSC; adenosine A(2a) receptor blocker); 5) 10 microM resveratrol + 1 microM 3-ethyl-5-benzyl-2-methyl-4-phenylethynyl-6-phenyl-1,4-(+/-)-dihydropyridine-3,5-dicarboxylate (MRS-1191; adenosine A(3) receptor blocker); or 6) 10 microM resveratrol + 3 microM 2-(4-morpholinyl)-8-phenyl-1(4H)-benzopyran-4-one hydrochloride [LY-294002, phosphatidylinositol (PI)3-kinase inhibitor], and groups perfused with adenosine receptor blockers alone. Hearts were then subjected to 30-min ischemia followed by 2-h reperfusion. The results demonstrated significant cardioprotection with resveratrol evidenced by improved ventricular recovery and reduced infarct size and cardiomyocyte apoptosis. CPT and MRS 1191, but not CSC, abrogated the cardioprotective abilities of resveratrol, suggesting a role of adenosine A(1) and A(3) receptors in resveratrol PC. Resveratrol induced expression of Bcl-2 and caused its phosphorylation along with phosphorylation of cAMP response element-binding protein (CREB), Akt, and Bad. CPT blocked phosphorylation of Akt and Bad without affecting CREB, whereas MRS 1191 blocked phosphorylation of all compounds, including CREB. LY-294002 partially blocked the cardioprotective abilities of resveratrol. The results indicate that resveratrol preconditions the heart through activation of adenosine A(1) and A(3) receptors, the former transmitting a survival signal through PI3-kinase-Akt-Bcl-2 signaling pathway and the latter protecting the heart through a CREB-dependent Bcl-2 pathway in addition to an Akt-Bcl-2 pathway.

CORDIS: Research and Innovation

It presents information about the following issues: What's new in FP6, Finding your research theme, Preparing to make a proposal, Making and submitting a proposal, What happens after submission, Managing a project (Au)

Third European Report on Science & Technology Indicators 2003: Towards a Knowledge-based Economy

Available as pdf: Full electronic version (3,603 kb). It contains: a) the new dynamics for S&T and Innovation, b) Production and mobility of human resources, c) Industry, competitiveness and research, d) Universities and public research centres, e) European perspectives on research and innovation. Additional documents related to the Report:Extended technical annex of the bibliometric analyses.

World of S&T indicators for ERA (STI-ERA).

These web pages include current publications about S&T indicators for 15 EU Member States, the US and Japan, ongoing projects on the development of new indicators, calls forproposals and studies, links to databases.

cAMP-mediated suppression of a Th1 clone associated with an alteration of the intracellular redox environment.

We have shown previously that the elevation of intracellular cAMP in antigen or anti-CD3-activated murine Th1 clones in the absence of antigen inhibits antigen-induced proliferation and the production of IL-2 by H2O2-mediated oxidation of p56lck and inhibits antigen-induced production of interferon-gamma by the induction of intracellular nitric oxide. Moreover, activated Th1 clones are resistant to cAMP-induced suppression. These results suggest that the immunosuppression of Th1 cells mediated by elevated intracellular cAMP is associated with an alteration in the intracellular oxidation/reduction environment. Here we report that the culture of an antigen or anti-CD3-activated murine Th1 clone with the adenylcyclase agonist forskolin (FSK) in the absence of antigen reduces the activity of intracellular catalase, and diminishes levels of intracellular reduced glutathione (GSH). Resting cells resistant to cAMP-induced suppression have higher intracellular GSH levels than antigen-activated cells susceptible to cAMP-induced suppression. The results provide further evidence that cAMP-induced suppression of Th1 clones is mediated by profound alterations in the intracellular redox environment and may be used to selectively inactivate Th1 cells activated by antigen.

European Research Area vision the Science and Society

Policy and working documents. European Research Area vision the Science and Society: Scientific Advice, Ethics, S&T Awareness, Young people and science, and Women and Science. Also, it presents the thematic areas:Bringing research closer to society, Responsible research and application of science and technology, Stepping up the science-society dialogue and women in science.

HFE mutation and dietary iron content interact to increase ischemia/reperfusion injury of the heart in mice.

Hereditary hemochromatosis is an inherited pathological condition characterized by iron overload in several vital organs including heart. To increase our understanding of the underlying pathogenic mechanisms of hereditary hemochromatosis, we used a HFE gene knockout mouse model that replicates hereditary hemochromatosis. A group of mice with no copies of HFE gene and corresponding wild-type mice were maintained either on low-iron (30 ppm) or high-iron (300 ppm) diet since birth. The results of our study revealed that HFE gene knockout mouse hearts were susceptible to ischemia-reperfusion injury as evidenced by increased postischemic ventricular dysfunction, increased myocardial infarct size and cardiomyocyte apoptosis compared with wild-type control hearts. The degree of injury increased in the hearts of the mice fed high-iron diet. The hearts of the HFE knockout mice showed increased iron deposition, increased content of reactive oxygen species (ROS) as evidenced by the increased formation of malondialdehyde, and reduced antioxidant enzymes including superoxide dismutase, catalase, and glutathione peroxidase. The results suggest that increased amount of ROS and reduced antioxidant reserve secondary to iron overloading may be instrumental for the susceptibility of the HFE gene knockout mice to cardiac injury.

Oxidative damage in colon and mammary tissue of the HFE-knockout mouse.

The HFE mutation is common and, when homozygous, can lead to a morbid accumulation of body iron and the disease hereditary hemochromatosis. Heterozygotes compose 10-15% of the European-American population, and have evidence of elevated body iron compared to homozygous normal people. Dietary iron content was hypothesized to interact with the HFE genotype to influence oxidative damage in mammary and colon tissue. Two groups of HFE-knockout mice were fed a standard iron diet (300 ppm) or a low iron diet (30 ppm). There was a significantly elevated concentration of malondialdehyde (by HPLC) in mammary (305 pmol/g vs. 166, p =.04) and colon (349 pmol/g vs. 226, p =.02) tissue among those mice on the standard iron diet compared to those on the low iron diet. These results suggest that dietary modification may affect the course of iron overload from HFE mutations.

Portal de investigación & desarrollo: enlaces externos

Presenta enlaces de instituciones europeas, sitios web corresponsales de CORDIS e enlaces de investigación y desarrollo de la Unión Europea, con destaque para los ministerios y consejos nacionales.