期刊
MOLECULES
卷 21, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/molecules21080974
关键词
caffeine; cancer; diabetes; methylxanthine; neurodegenerative diseases; structure-activity relationship; theobromine; theophylline
资金
- Portuguese Fundacao para a Ciencia e a Tecnologia-FCT [SFRH/BPD/80451/2011, SFRH/BPD/108837/2015]
- CICS-UBI [PestC/SAU/UI0709/2014]
- UMIB [Pest-OE/SAU/UI0215/2014]
- FEDER via Programa Operacional Fatores de Competitividade-COMPETE/QREN FSE
- POPH funds
Methylxanthines are a group of phytochemicals derived from the purine base xanthine and obtained from plant secondary metabolism. They are unobtrusively included in daily diet in common products as coffee, tea, energetic drinks, or chocolate. Caffeine is by far the most studied methylxanthine either in animal or epidemiologic studies. Theophylline and theobromine are other relevant methylxanthines also commonly available in the aforementioned sources. There are many disseminated myths about methylxanthines but there is increased scientific knowledge to discuss all the controversy and promise shown by these intriguing phytochemicals. In fact, many beneficial physiologic outcomes have been suggested for methylxanthines in areas as important and diverse as neurodegenerative and respiratory diseases, diabetes or cancer. However, there have always been toxicity concerns with methylxanthine (over) consumption and pharmacologic applications. Herein, we explore the structure-bioactivity relationships to bring light those enumerated effects. The potential shown by methylxanthines in such a wide range of conditions should substantiate many other scientific endeavors that may highlight their adequacy as adjuvant therapy agents and may contribute to the advent of functional foods. Newly designed targeted molecules based on methylxanthine structure may originate more specific and effective outcomes.
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