Inflation volatility: A Bayesian approach

The ongoing trend of high inflation across much of the world has reignited interest in inflation volatility with varying foci and methods. In this paper, we employ a Bayesian framework to estimate inflation volatility using a sample of G20 countries. Estimation results suggest persistent heterogeneity in price volatility across time and countries. Furthermore, we use the Bayesian estimates of volatility to conduct several empirical analyses on the implications of interdependence of economies, development status for uncertainty. Further analyses on the determinants of price volatility suggest that trade openness, COVID-19, and the Ukraine crisis have positive impacts on volatility. Additionally, the nature of the political institutions and the share of manufacturing in total national output are also found to affect volatility to some extent. © 2023 The Author(s)

An emerging natural antioxidant therapy for COVID-19 infection patients: Current and future directions

Objective: Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) affects millions of people worldwide. The article aims to review the therapeutic perspective on natural antioxidants, their mechanism of action, pharmacokinetics in management and cure of COVID-19/ SARS-CoV-2 infection. Methods: We conducted a literature search including World Health Organization and National Institute of Health guidelines and clinical trials registered with ClinicalTrials.gov limited to antioxidants in COVID-19 management. Results: Elderly, immunocompromised patients, and others with underlying health conditions or multiple comorbidities have a high mortality rate. Disrupted redox homeostasis and oxidative stress seem to be biological pathways that may increase personal vulnerability to infection. Antioxidants like vitamins C, D, E, epigallocatechin-3 gallate, and morin have been reported to protect against COVID-19 disease. Reactive oxygen species are immunological regulatory elements of viral replication. Natural antioxidants exhibit potential action in preventing inflammation and organ dysfunction during viral infection. They also increase glutathione level, oxygenation rate, and immunological responses in the treatment of sepsis and acute respiratory distress syndrome. Conclusion: No wonder the selection of prevention, treatment, and cure of COVID-19 and SARS-CoV-2 mainly depends upon the antiviral and immunoregulatory activity which they possess. Yet, their efficacy against COVID-19 is of great concern and demands extensive study. © 2023 The Authors. Food Frontiers published by John Wiley & Sons Australia, Ltd and Nanchang University, Northwest University, Jiangsu University, Zhejiang University, Fujian Agriculture and Forestry University.

Role of foreign direct investments in agriculture, forestry and fishing in developing countries

The primary sector is vital for growth and sustainable development in emerging countries. The combined effects of COVID-19 and geopolitical uncertainty on capital flows are likely to have profound impacts on many developing countries. In particular, decreased capital inflows into agriculture will negatively affect food security and growth. However, there remain limited literature on the role of capital inflows in this sector. In this paper, we examine the role that foreign capital inflows play in the development of the agricultural, forestry and fishing sectors in developing countries. Specifically, we use the panel vector autoregression approach that accounts for endogeneity. Using data from sixteen developing economies, we find that there exists bidirectional causality between foreign direct investments in agriculture, forestry and fishing and value added in these sectors. These bidirectional relationships reflect a cyclical effect between FDI and value added in the agriculture, forestry and fishing. The effect of FDI on value added in agriculture, forestry and fishing remains positive for up to five years in our model. This implies FDI has a medium- to long-term positive impact on value added in agriculture, forestry and fishing. The implication of this result is that countries with currently high FDI transaction costs or that have a generally less conducive investment environment can improve agriculture by eliminating these obstacles. This is because FDIs can lead to improved technologies and technical expertise, practices, management and other systems that benefit the host countries.