Journal
ARCHIVES OF TOXICOLOGY
Volume 97, Issue 1, Pages 3-38Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00204-022-03391-2
Keywords
Polyphenols; Bioavailability; Bioaccessibility; Bioactivity; Chronic non-communicable diseases; Gut microbiota; Delivery nanosystems; Personalized medicine
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Non-communicable diseases (NCDs) are major global causes of mortality and morbidity. Unhealthy lifestyle habits are closely associated with NCDs, and improving these habits may help alleviate symptoms and prolong the life expectancy of affected individuals. Polyphenols (PPLs) derived from plants have shown positive results in preventing and treating NCDs and are considered safe.
Chronic pathologies or non-communicable diseases (NCDs) include cardiovascular diseases, metabolic syndrome, neurological diseases, respiratory disorders and cancer. They are the leading global cause of human mortality and morbidity. Given their chronic nature, NCDs represent a growing social and economic burden, hence urging the need for ameliorating the existing preventive strategies, and for finding novel tackling therapies. NCDs are highly correlated with unhealthy lifestyle habits (such as high-fat and high-glucose diet, or sedentary life). In general, lifestyle approaches that might improve these habits, including dietary consumption of fresh vegetables, fruits and fibers, may contrast NCD symptoms and prolong life expectancy of affected people. Polyphenols (PPLs) are plant-derived molecules with demonstrated biological activities in humans, which include: radical scavenging and anti-oxidant activities, capability to modulate inflammation, as well as human enzymes, and even to bind nuclear receptors. For these reasons, PPLs are currently tested, both preclinically and clinically, as dietary adjuvants for the prevention and treatment of NCDs. In this review, we describe the human metabolism and bioactivity of PPLs. Also, we report what is currently known about PPLs interaction with gastro-intestinal enzymes and gut microbiota, which allows their biotransformation in many different metabolites with several biological functions. The systemic bioactivity of PPLs and the newly available PPL-delivery nanosystems are also described in detail. Finally, the up-to-date clinical studies assessing both safety and efficacy of dietary PPLs in individuals with different NCDs are hereby reported. Overall, the clinical results support the notion that PPLs from fruits, vegetables, but also from leaves or seeds extracts, are safe and show significant positive results in ameliorating symptoms and improving the whole quality of life of people with NCDs.
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