Administration of exogenous surfactant and cytosolic phospholipase A2α inhibitors may help COVID-19 infected patients with chronic disease

Coronaviruses ◽  
2021 ◽  
Vol 02 ◽  
Author(s):  
Mohammed Abdalla Hussein
Keyword(s):  
Chronic Diseases ◽  
Public Health Problem ◽  
Lung Damage ◽  
Lung Mechanics ◽  
Cochrane Library ◽  
Exogenous Surfactant ◽  
Viral Attachment ◽  
Phospholipases A2 ◽  
Cytosolic Phospholipase ◽  
Cytosolic Phospholipase A2α

Background : Cronavirus-19 (COVID-19) pandemic is a worldwide public health problem causing 347,070 deaths from December 25, 2019 until May 25, 2020. Phospholipids are structural components of mammalian cytoskeleton and cell membranes. Phosphatidylglycerol is an anionic lipid found in mammalian membranes in low amounts (1–2%) of the total phospholipids. Also, phosphatidylglycerol suppressed viral attachment to the plasma membrane and subsequent replication in lung cells. Phosphatidylglycerol depletion caused by over expression of cytosolic phospholipase A2α induce lipid accumulation in lung alveoli and promote acute respiratory distress syndrome (ARDS). Exogenous-surfactant replacement has been successfully achieved in ARDS and improve oxygenation and lung mechanics. Inhibition of cytosolic phospholipase A2alpha impairs an early step of COVID-19 replication. Aim: The present study was carried out to explain the correlation between the administration of exogenous artificial surfactant as well as cytosolic phospholipase A2α inhibitors to improve oxygenation and lung mechanics and inhibit COVID-19 replication. Methods: Database research was carried out on Medline, Embase, Cochrane Library, country specific journals, and following-up WHO reports published between December 25, 2019 – May 25, 2020. Results: Till 25 May 2020, Coronavirus cases; 5,307,298, deaths; 347,070, recovered; 2,314,849. According to the WHO reports, most COVID-19 deaths seen are in people suffered from other chronic diseases characterized by phospholipidosis and phosphatidylglycerol deficiency, included hypertension, liver, heart, lung, and diabetes diseases. Phospholipases A2 (PLA2) catalyze the cleavage of fatty acids esterified at the sn-2 position of glycerophospholipids leading to enhanced inflammation and lung damage. Also, cytosolic phospholipase A2α inhibitors may reduce the accumulation of viral proteins and RNA. In addition, administration of exogenous phospholipid surfactant may help COVID-19 infected patients with ARDS to remove inflammatory mediators. Conclusion: The present study was showed that there is a relation between phosphatidylglycerol deficiency in COVID-19 infected patients with ARDS and/or chronic diseases and their mortality. These findings also showed an important approach for the prevention and treatment of COVID-19 infections by cytosolic phospholipase A2α inhibitors and exogenous administration of a specific phospholipid surfactant.

Attitudes Toward Intimate Partner Violence Against Women in the European Union: A Systematic Review

2020 ◽  
Vol 25 (2) ◽  
pp. 104-121 ◽  
Author(s):  
Enrique Gracia ◽  
Marisol Lila ◽  
Faraj A. Santirso
Keyword(s):  
Systematic Review ◽  
Intimate Partner Violence ◽  
Violence Against Women ◽  
Partner Violence ◽  
Public Health Problem ◽  
Intimate Partner ◽  
Cochrane Library ◽  
Effective Prevention ◽  
Partner Violence Against Women ◽  
The Eu

Abstract. Attitudes toward intimate partner violence against women (IPVAW) are increasingly recognized as central to understanding of this major social and public health problem, and guide the development of more effective prevention efforts. However, to date this area of research is underdeveloped in western societies, and in particular in the EU. The present study aims to provide a systematic review of quantitative studies addressing attitudes toward IPVAW conducted in the EU. The review was conducted through Web of Science, PsychINFO, Medline, EMBASE, PUBMED, and the Cochrane Library, in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) recommendations. This review aimed to identify empirical studies conducted in the EU, published in English in peer-reviewed journals from 2000 to 2018, and analyzing attitudes toward IPVAW. A total of 62 of 176 eligible articles were selected according to inclusion criteria. Four sets of attitudes toward IPVAW were identified as the main focus of the studies: legitimation, acceptability, attitudes toward intervention, and perceived severity. Four main research themes regarding attitudes toward IPVAW emerged: correlates of attitudes, attitudes as predictors, validation of scales, and attitude change interventions. Although interest in this research area has been growing in recent years, the systematic review revealed important gaps in current knowledge on attitudes toward IPVAW in the EU that limits its potential to inform public policy. The review outlines directions for future study and suggests that to better inform policy making, these future research efforts would benefit from an EU-level perspective.

scholarly journals Anemia as a risk factor for tuberculosis: a systematic review and meta-analysis

2021 ◽  
Vol 26 (1) ◽  
Author(s):  
Yemataw Gelaw ◽  
Zegeye Getaneh ◽  
Mulugeta Melku
Keyword(s):  
Systematic Review ◽  
Risk Factor ◽  
Infectious Diseases ◽  
Low Socioeconomic Status ◽  
Meta Analysis ◽  
Public Health Problem ◽  
Cochrane Library ◽  
Major Public Health Problem ◽  
Double Burden ◽  
Mesh Terms

Abstract Background Tuberculosis is a major public health problem caused by Mycobacterium tuberculosis, occurring predominantly in population with low socioeconomic status. It is the second most common cause of death from infectious diseases. Tuberculosis becomes a double burden among anemic patients. Anemia increases an individual’s susceptibility to infectious diseases including tuberculosis by reducing the immunity level. Therefore, the purpose of this study was to determine whether anemia is a risk factor for tuberculosis. Method Relevant published articles were searched in electronic databases like PubMed, Google Scholar, EMBASE, and Cochrane Library using the following MeSH terms: risk factor, predictors, tuberculosis, TB, Anaemia, Anemia, hemoglobin, Hgb, and Hb. Articles written in the English, observational studies conducted on the incidence/prevalence of tuberculosis among anemic patients, or papers examined anemia as risk factors for tuberculosis were included. From those studies meeting eligibility criteria, the first author’s name, publication year, study area, sample size and age of participants, study design, and effect measure of anemia for tuberculosis were extracted. The data were entered using Microsoft Excel and exported to Stata version 11 for analysis. The random-effects model was applied to estimate the pooled OR and HR, and 95% CI. The sources of heterogeneity were tested by Cochrane I-squared statistics. The publication bias was assessed using Egger’s test statistics. Results A total of 17 articles with a 215,294 study participants were included in the analysis. The odd of tuberculosis among anemic patients was 3.56 (95% CI 2.53–5.01) times higher than non-anemic patients. The cohort studies showed that the HR of tuberculosis was 2.01 (95% CI 1.70–2.37) times higher among anemic patients than non-anemic patients. The hazard of tuberculosis also increased with anemia severity (HR 1.37 (95% CI 0.92–2.05), 2.08 (95% CI 1.14–3.79), and 2.66 (95% CI 1.71–4.13) for mild, moderate, and severe anemia, respectively). Conclusion According to the current systematic review and meta-analysis, we can conclude that anemia was a risk factor for tuberculosis. Therefore, anemia screening, early diagnose, and treatment should be provoked in the community to reduce the burden of tuberculosis.

scholarly journals Cytosolic Phospholipase A2α–deficient Mice Are Resistant to Collagen-induced Arthritis

2003 ◽  
Vol 197 (10) ◽  
pp. 1297-1302 ◽  
Author(s):  
Martin Hegen ◽  
Linhong Sun ◽  
Naonori Uozumi ◽  
Kazuhiko Kume ◽  
Mary E. Goad ◽  
...  
Keyword(s):  
Critical Role ◽  
Wild Type ◽  
Collagen Induced Arthritis ◽  
Cytosolic Phospholipase ◽  
Severity Scores ◽  
In The Wild ◽  
Cytosolic Phospholipase A2α ◽  
Antibody Levels ◽  
Deficient Mice

Pathogenic mechanisms relevant to rheumatoid arthritis occur in the mouse model of collagen-induced arthritis (CIA). Cytosolic phospholipase A2α (cPLA2α) releases arachidonic acid from cell membranes to initiate the production of prostaglandins and leukotrienes. These inflammatory mediators have been implicated in the development of CIA. To test the hypothesis that cPLA2α plays a key role in the development of CIA, we backcrossed cPLA2α-deficient mice on the DBA/1LacJ background that is susceptible to CIA. The disease severity scores and the incidence of disease were markedly reduced in cPLA2α-deficient mice compared with wild-type littermates. At completion of the study, >90% of the wild-type mice had developed disease whereas none of the cPLA2α-deficient mice had more than one digit inflamed. Furthermore, visual disease scores correlated with severity of disease determined histologically. Pannus formation, articular fibrillation, and ankylosis were all dramatically reduced in the cPLA2α-deficient mice. Although the disease scores differed significantly between cPLA2α mutant and wild-type mice, anti-collagen antibody levels were similar in the wild-type mice and mutant littermates. These data demonstrate the critical role of cPLA2α in the pathogenesis of CIA.

scholarly journals Regulation of cytosolic phospholipase A2α by hsp90 and a p54 kinase in okadaic acid-stimulated macrophages

2008 ◽  
Vol 84 (3) ◽  
pp. 798-806 ◽  
Author(s):  
Dawn E. Tucker ◽  
Miguel A. Gijón ◽  
Diane M. Spencer ◽  
Zhi-Hua Qiu ◽  
Michael H. Gelb ◽  
...  
Keyword(s):  
Okadaic Acid ◽  
Cytosolic Phospholipase ◽  
Cytosolic Phospholipase A2α

scholarly journals Trends, Coverage and Influencing Determinants of Influenza Vaccination in the Elderly: A Population-Based National Survey in Spain (2006–2017)

Vaccines ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 327
Author(s):  
Silvia Portero de la Cruz ◽  
Jesús Cebrino
Keyword(s):  
Influenza Vaccination ◽  
Chronic Diseases ◽  
Vaccination Coverage ◽  
Public Health Problem ◽  
Risk Groups ◽  
The Elderly ◽  
Population Based ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Significant Public Health

Influenza is a significant public health problem and the elderly are at a greater risk of contracting the disease. The vaccination coverage of the elderly is below the Spanish target of 65% for each influenza season. The aims of this study were to report the coverage of influenza vaccination in Spain among the population aged ≥65 years and high-risk groups for suffering chronic diseases, to analyze the time trends from 2006 to 2017 and to identify the factors which affect vaccination coverage. A nationwide cross-sectional study was conducted including 20,753 non-institutionalized individuals aged ≥65 years who had participated in the Spanish National Health Surveys in 2006, 2011/2012, and 2017. Sociodemographic, health-related variables, and influenza vaccination data were used. A logistic regression analysis was performed to determine the variables associated with influenza vaccination. Influenza vaccination coverage was 60%. By chronic condition, older people with high cholesterol levels and cancer had the lowest vaccination coverage (62.41% and 60.73%, respectively). This coverage declined from 2006 to 2017 in both groups. Higher influenza vaccination was associated with males, Spanish nationality, normal social support perceived, polypharmacy, worse perceived health, participation in other preventive measures, and increasing age and the number of chronic diseases.

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