The immune system is the set of cells and their activity against antigens or infectious agents that comprises the body's defense system against diseases. The immune system does a great job of keeping people healthy and preventing infections.
Besides foods and nutritional supplements, herbs also play an important role in helping the immune system defend against viruses and bacteria attacks.
Infectious diseases are a medical condition caused by pathogenic microorganisms, including bacteria, viruses, parasites, or fungi.
Most cases of infectious diseases are contagious by spreading directly or indirectly, from one person to another.
In other words, if you kiss, or are coughed or sneezed on by an infectious person, you are at risk of developing the same infectious disease.
According to the statistic provided by the World Health Organization, 3 infectious diseases were ranked in the top ten causes of death worldwide in 2016.
More precisely, lower respiratory infections, diarrheal diseases, and tuberculosis induced 3.0 million, 1.4 million, and 1.3 million deaths, respectively.
Conventionally, most cases of infectious diseases except those caused by viruses are treated by antibiotics.
Microorganism, first observed by Anton van Leeuwenhoek in 1675 is a class of microscopic organisms, including a bacterium, virus, or fungus.
Believe or not, single-celled like bacteria, algae, and protozoa, or multicellular, such as algae and fungi can survive under all types of extreme environments.
And less than 1% of bacteria, can invade and cause infection and diseases.
Although the discovery of human antibiotics is medicines that kill or slow the growth of bacteria, however, overuses of the antibiotics have been found to induce microbial resistance to certain drugs.
On finding a natural ingredient for the prevention and treatment of infectious diseases, scientists examined the antimicrobial effects on the essential oil extracted from Eyebright, Euphrasia rostkoviana Hayne (Scrophulariaceae).
Eyebright is one of the species of flowering plants, genus Euphrasia, belonging to the family Orobanchaceae, native to Europe.
The plant has been used in traditional and herbal medicine to treat eye infection and to relieve inflammation caused by colds, coughs, sinus infections, sore throats, and hay fever.
According to the analysis of eye infections induced by Enterococcus faecalis, Escherichia coli, Klebsiella pneumonia, Staphylococcus aureus, S. epidermidis, Pseudomonas aeruginosa, and Candida albicans,
* 70 constituents isolated from the essential oil that inhibited infection, the n-hexadecanoic acid (18.47%) was the main constituent followed by thymol (7.97%), myristic acid (4.71%), linalool (4.65%), and anethole (4.09%).
* The essential oil showed antimicrobial effect against all organisms tested with the exception of P. aeruginosa.
* Most importantly, the best activity was observed against all Gram-positive bacteria tested with the minimum inhibitory concentrations of 512 µg/mL.
Based on the results, researchers suggest, "This is the first report on the chemical composition of E. rostkoviana essential oil and its antimicrobial activity".
Taken altogether, Eyebright (Euphrasia) may be considered a remedy for the treatment of microbial infection, pending to the confirmation of the larger sample size and multicenter human study.
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Author Biography
Kyle J. Norton (Scholar, Master of Nutrition, All right reserved)
Health article writer and researcher; Over 10.000 articles and research papers have been written and published online, including worldwide health, ezine articles, article base, health blogs, self-growth, best before it's news, the karate GB daily, etc.,.
Named TOP 50 MEDICAL ESSAYS FOR ARTISTS & AUTHORS TO READ by Disilgold.com Named 50 of the best health Tweeters Canada - Huffington Post
Nominated for shorty award over last 4 years
Some articles have been used as references in medical research, such as international journal Pharma and Bioscience, ISSN 0975-6299.
Sources
(1) Composition and Antimicrobial Activity of Euphrasia rostkoviana Hayne Essential Oil by Novy P1, Davidova H1, Serrano-Rojero CS1, Rondevaldova J2, Pulkrabek J3, Kokoska L. (PubMed)
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