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The coronavirus disease – 2019 (COVID-19) pandemic, caused by severe acute respiratory syndrome coronavirus virus – 2 (SARS-CoV-2), set it foots in China during December 2019 as a high-alert public health emergency This malady had thereafter spread rapidly across the globe in more than 215 countries, affecting more than 50 million people and causing the death of nearly 1 3 million as of 9th November, 2020 and resulted in a massive panic, fear, and economic crashes in most of the world A better understanding of the disease, the virus, structural biology, clinical manifestations, risk factors, transmission, diagnosis, treatment, and management can be extrapolated from the literature review of the research up to date In addition, deliberations on animal linkages, spillover and zoonotic implications for exploring the actual origin of the disease and all possible animal-human interfaces, intermediate host;diagnosis for devising specific and sensitive tests of ease, accessibility and affordability;advances in the development of safe and effective vaccines and therapeutics for prevention and treatment;management of COVID-19 practicable in all countries;application of traditional or regularly used modalities including plant-based products and medicinal herbs against SARS-COV-2;nutritious dietary foods against this disease;and socio-economic impacts of COVID-19 can provide valuable information on these various aspects Most of the research currently focuses on disease, development of a vaccine or therapeutic modalities But the future mortality rate and virulence of virus not only depends on the evolution of the virus, but also on how we develop preventive measures and effective treatment as well as in advance preparedness The present review highlights salient aspects of SARS-CoV-2 / COVID-19, pathology, risk factors, transmission, diagnosis, potential treatment, and alternative / supportive therapeutic options © 2020, Editorial board of Journal of Experimental Biology and Agricultural Sciences All rights reserved

Newly emerging severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causing coronavirus disease 2019 (COVID-19) pandemic has now spread across the globe in past few months while affecting 26 million people and leading to more than 0.85 million deaths as on 2nd September, 2020. Severity of SARS-CoV-2 infection increases in COVID-19 patients due to pre-existing health co-morbidities. This mini-review has focused on the three significant co-morbidities viz., heart disease, hypertension, and diabetes, which are posing high health concerns and increased mortality during this ongoing pandemic. The observed co-morbidities have been found to be associated with the increasing risk factors for SARS-CoV-2 infection and COVID-19 critical illness as well as to be associated positively with the worsening of the health condition of COVID-19 suffering individuals resulting in the high risk for mortality. SARS-CoV-2 enters host cell via angiotensin-converting enzyme 2 receptors. Regulation of crucial cardiovascular functions and metabolisms like blood pressure and sugar levels are being carried out by ACE2. This might be one of the reasons that contribute to the higher mortality in COVID-19 patients having co-morbidities. Clinical investigations have identified higher levels of creatinine, cardiac troponin I, alanine aminotransferase, NT-proBNP, creatine kinase, D-dimer, aspartate aminotransferase and lactate dehydrogenase in patients who have succumbed to death from COVID-19 as compared to recovered individuals. More investigations are required to identify the modes behind increased mortality in COVID-19 patients having co-morbidities of heart disease, hypertension, and diabetes. This will enable us to design and develop suitable therapeutic strategies for reducing the mortality. More attention and critical care need to be paid to such high risk patients suffering from co-morbidities during COVID-19 pandemic.

Anemia is a common and predominant blood disorder globally, in which the level of hemoglobin or healthy red blood cells are abnormally lower. The most common type of anemia is iron-deficiency anemia (IDA), and the treatment is iron supplementation to the individuals. In some conditions, the iron supplementation does not alter the hemoglobin range, which means the iron given is not taken up by the body of the individual. This condition is found to be iron-refractory IDA (IRIDA). It is the genetic condition, in which the hepcidin, an iron regulatory hormone expression is altered. IRIDA is a rare genetic disorder, which is autosomal recessive in inheritance pattern. Hepcidin alteration blocks the iron absorption, which in turn causes anemic condition. The transmembrane protease serine 6 (TMPRSS6) gene is involved in negative regulation of hepcidin along with the encoding of matriptase-2 enzyme, which is crucial for iron balance in the human body. Matriptase-2 regulates the iron homeostasis by balancing the hepcidin hormone. The genetic polymorphisms in the TMPRSS6 gene result in this a rare type of anemic condition. Therefore, this review particularly focuses on the IRIDA and TMPRSS6 gene, hepcidin, and matriptase-2 enzyme. The review on IRIDA is being found to be important since the clear metabolism of hepcidin and matriptase-2 in iron metabolism are still unclear.