ABSTRACT
Fusarium mycotoxins are the most economically important fungal toxins. Fumonisins, zearalenone and trichothecenes (T-2 toxin, HT-2 toxin, deoxynivalenol, nivalenol etc) are the major representatives and most studied of Fusarium mycotoxins. The Fusarium mycotoxins contaminate cereal grains, animal feeds and human food products, and cause huge economic losses and pose a threat to animal and human health globally. Depending on the type, the toxicity of Fusarium mycotoxins and the mechanisms have been well investigated. Epigenetic modifications (DNA methylation, histone modifications and regulation of non-coding RNA) have been implicated in various human diseases and the toxicities in animals caused by Fusarium mycotoxins, including carcinogenesis, genotoxicity and reproductive disorders. On the basis of recently documented data, this review discussed the relationship between the epigenetic modifications and Fusarium mycotoxins-induced toxicities.
Subject(s)
Epigenesis, Genetic/drug effects , Fusarium/metabolism , Mycotoxins/toxicity , Animal Feed/analysis , Animals , Food Contamination/analysis , Humans , Mycotoxins/metabolismABSTRACT
Several humans' diseases such as; cancer, heart disease, diabetes retain an etiology of epigenetic, and a new therapeutic option termed as "epigenetic therapy" can offer a potential way to treat these diseases. A numbers of epigenetic agents such as; inhibitors of DNA methyltransferase (DNMT) and histone deacetylases (HDACs) have grew an intensive investigation, and many of these agents are currently being tested in a clinical trial, while some of them have been approved for the use by the authorities. Since miRNAs can act as tumor suppressors or oncogenes, the miRNA mimics and molecules targeted at miRNAs (antimiRs) have been designed to treat some of the diseases. Much naturally occurring nutrition were discovered to alter the epigenetic states of cells. The nutrition, including polyphenol, flavonoid compounds, and cruciferous vegetables possess multiple beneficial effects, and some can simultaneously change the DNA methylation, histone modifications and expression of microRNA (miRNA). This review mainly summarizes the information of epigenetic agents of DNMTs and HDACs inhibitors, miRNA mimics and antimiRs, as well as the natural nutrition. In addition, some future perspectives related to the epigenetic therapy are also included.
Subject(s)
Biological Products/pharmacology , Enzyme Inhibitors/pharmacology , Epigenesis, Genetic/drug effects , Histone Methyltransferases/antagonists & inhibitors , MicroRNAs/metabolism , Animals , Biological Products/chemistry , DNA Methylation/drug effects , Enzyme Inhibitors/chemistry , Histone Methyltransferases/genetics , Histone Methyltransferases/metabolism , Humans , MicroRNAs/geneticsABSTRACT
Oral submucous fibrosis (OSF) is a common pre-malignant condition of the mouth in arecanut chewers in Indian subcontinent. It is characterized by restriction in opening of the mouth, tongue protrusion, and cheek flexibility. Reports of muscle changes in OSF, using light microscopy are few. Incisional biopsy sections of thirty OSF patients were stained with Masson's Trichrome stain, to study the fibrosis involving the muscle. Wide spectrum of changes were observed where fibrosis was being evident sub-epithelially, not extending in to the muscle to cases where only a few remnants of muscle fibers were seen and the missing muscle bundle area being replaced by fibrous tissue. The probable mechanism by which these changes occur is discussed.