20 research outputs found

    Personalized and Targeted Gut Microbiome Modulation in the Prevention and Treatment of Chronic Diseases

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    The gut microbiota is being recognized as a factor with a significant influence on host physiology, health maintenance, and disease prevention. Distinct alterations of the gut microbiota are correlated with several chronic diseases. Currently, gut microbiota can be modulated by diet, probiotics, prebiotics, postbiotics, pharmabiotics, and fecal microbiota transplantation. An effective strategy in gut microbiota modulation is needed for the prevention and supportive treatment of chronic diseases. New and more effective approaches toward gut microbiota modulation are emerging, namely personalization and targeted modulation. The composition of novel products and treatments based on the individual gut microbiome, metabolome, strain specificity, and clinical data analysis can reveal and address specific changes to the diversity, composition, and function of gut microbiota. These analyses enable the development of personalized and targeted gut microbiota modulation, by the application of beneficial microorganisms, their consortia, their metabolites, and their effective combination

    Effectiveness of Bioactive Food Components in Experimental Colon Carcinogenesis

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    The aim of the present study was the evaluation of possible protective effects of selected bioactive food components in experimental N,N-dimethylhydrazine (DMH)-induced colon carcinogenesis. Wistar albino rats (n = 92) were fed a high fat diet or conventional laboratory diet. Two weeks after the beginning of the trial, DMH injections were given to six groups of rats at the dose of 20 mg/kg b.w. twice weekly. The activity of bacterial enzymes in faeces and serum bile acid concentrations were determined. High fat diet, DMH injections, and their combination significantly increased the activies of β-galactosidase, β-glucuronidase, and α-glucosidase (p p < 0.001), as well as the bile acid concentration compared to the group at the highest risk. The protective effects of selected bioactive food components in experimentally induced colon carcinogenesis allow for their possible use in cancer prevention or treatment

    Ishrana inulinom kao terapija na hemopreventivne i zapaljenske markere tumorogeneze kolorektalnih kancera

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    The aim of this experiment was to investigate the infl uence of inulin administration on chemopreventive and inflammatory markers in dimethylhydrazine induced colorectal cancer development in rats. A group of 30 Sprague-Dawley rats was divided into a control group (CG), a group with dimethylhydrazine (DMH), and a group given dimethylhydrazine combined with the prebiotic (DMH+PRE). Dimethylhydrazine injection significantly (p&lt;0.001) elevated the immunoreactivity chemopreventive markers COX-2, NFκB, iNOS, elevated serum and jejunal mucosa levels of proinfl ammatory cytokine IL-2, and decreased serum and jejunal mucosa levels of regulatory cytokine IL-10. Inulin diet intervention significantly suppressed immunoreactivity of COX- 2, NFκB, iNOS positive cells in the tunica mucosae and tela submucosae of rat colon tissue, increased levels of IL-2 and decreased levels of IL-10. By determining the chemopreventive markers COX-2, iNOS and NFkB, which can be characterized as inflammatory markers, we confirmed the presence of inflammation in the colon as the number of COX-2, NFkB and iNOS immunoreactive cells was significantly higher after DMH application than in the control group. These findings indicate that dietary intake of inulin suppressed the expression of the observed markers, which play an important role in carcinogenesis and inflammation, which predispose the use of inulin i

    Any Future for Faecal Microbiota Transplantation as a Novel Strategy for Gut Microbiota Modulation in Human and Veterinary Medicine?

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    Alterations in the composition of the intestinal microbiome, also known as dysbiosis, are the result of many factors such as diet, antibiotics, stress, diseases, etc. There are currently several ways to modulate intestinal microbiome such as dietary modulation, the use of antimicrobials, prebiotics, probiotics, postbiotics, and synbiotics. Faecal microbiota transplantation (FMT) represents one new method of gut microbiota modulation in humans with the aim of reconstructing the intestinal microbiome of the recipient. In human medicine, this form of bacteriotherapy is successfully used in cases of recurrent Clostridium difficile infection (CDI). FMT has been known in large animal medicine for several years. In small animal medicine, the use of FMT is not part of normal practice

    Prebiotics and bioactive natural substances induce changes of composition and metabolic activities of the colonic microflora in cancerous rats

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    Prebiotics are defined as selectively fermented food ingredients that induce specific changes in the composition and/or activity in the gastrointestinal microbiota beneficial to the host well-being and health. The aim of the presented experiment was to investigate the effect of a prebiotic applied alone or in combination with Hyppocastani extractum siccum, and Lini oleum virginale in rats with dimethylhydrazine induced colon cancer. Wistar albino rats were fed high fat diet supplemented with the prebiotic alone or in combination with Horse chestnut and flaxseed oil. The activity of faecal glycolytic enzymes, lipid parameters, bile acids, short chain fatty acids and counts of coliforms and lactobacilli were determined. Treatment with the prebiotic alone and in combination with selected substances significantly decreased the activity of glycolytic bacterial enzyme β-glucuronidase (P<0.001) and increased activities of β-galactosidase and β-glucosidase. Bile acids concentration was significantly decreased (P<0.01) except for the combination of the prebiotic with Horse chestnut. The prebiotic alone decreased the lipid parameters (P<0.001) and enhanced production of short chain fatty acids. Application of prebiotic and bioactive natural substances significantly reduced number of coliforms (P<0.05). Prebiotic alone significantly increased the count of lactobacilli (P<0.05). These results show that prebiotics have a protective effect and may be the useful for colon cancer prevention and treatment

    Prebiotics and bioactive natural substances induce changes of composition and metabolic activities of the colonic microflora in cancerous rats

    No full text
    Prebiotics are defined as selectively fermented food ingredients that induce specific changes in the composition and/or activity in the gastrointestinal microbiota beneficial to the host well-being and health. The aim of the presented experiment was to investigate the effect of a prebiotic applied alone or in combination with Hyppocastani extractum siccum, and Lini oleum virginale in rats with dimethylhydrazine induced colon cancer. Wistar albino rats were fed high fat diet supplemented with the prebiotic alone or in combination with Horse chestnut and flaxseed oil. The activity of faecal glycolytic enzymes, lipid parameters, bile acids, short chain fatty acids and counts of coliforms and lactobacilli were determined. Treatment with the prebiotic alone and in combination with selected substances significantly decreased the activity of glycolytic bacterial enzyme β-glucuronidase (P&lt;0.001) and increased activities of β-galactosidase and β-glucosidase. Bile acids concentration was significantly decreased (P&lt;0.01) except for the combination of the prebiotic with Horse chestnut. The prebiotic alone decreased the lipid parameters (P&lt;0.001) and enhanced production of short chain fatty acids. Application of prebiotic and bioactive natural substances significantly reduced number of coliforms (P&lt;0.05). Prebiotic alone significantly increased the count of lactobacilli (P&lt;0.05). These results show that prebiotics have a protective effect and may be the useful for colon cancer prevention and treatment
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