Biology subjects

D'Amico, F.

Publications and source records attributed to D'Amico, F..

3 recordsLinked to original sources

bioRxiv2026

Identification of potential colorectal-cancer-protective bioactive natural compounds in the human gut microbiome

Increasing evidence links the gut microbiome to the development and progression of colorectal cancer (CRC). Despite the remarkable diversity of microbial biosynthetic gene clusters (BGCs), no CRC-protective bioactive natural compounds originating from gut microbiome BGCs have yet been detected. Here, we investigated BGCs within de novo gut metagenome-assembled species reconstructed from 559 individuals, including healthy controls, adenoma and CRC patients. Comparative analysis revealed distinct BGC patterns across groups, with four BGCs being significantly enriched in healthy individuals. One of these was predicted to be involved in the biosynthesis of a metabolite closely related to the anticancer compound curacin-A. Notably, this BGC was also overrepresented in healthy centenarians, suggesting a role in achieving long-term cancer-free health. Our findings highlight the importance of exploring gut microbiome BGCs as a source of novel bioactive molecules for cancer prevention and treatment, as well as for other health purposes.

microbiology↗

bioRxiv2019

Gut microbiome structure and adrenocortical activity in dogs with aggressive and phobic behavioral disorders

Accompanying human beings since the Paleolithic period, dogs has been recently regarded as a reliable model for the study of the gut microbiome connections with health and disease. In order to provide some glimpses on the connections between the gut microbiome layout and host behavior, we profiled the phylogenetic composition and structure of the canine gut microbiome of dogs with aggressive (n = 17), phobic (n = 15) and normal behavior (n = 17). According to our findings, aggressive behavioral disorder was found to be characterized by a peculiar gut microbiome structure, with high biodiversity and enrichment in generally subdominant bacterial genera. On the other hand, phobic dogs were enriched in Lactobacillus, a bacterial genus with known probiotic and psychobiotic properties. Although further studies are needed to validate our findings, our work supports the intriguing opportunity that different behavioral phenotypes in dogs may be associated with peculiar gut microbiome layouts, suggesting possible connections between the gut microbiome and the central nervous system and indicating the possible adoption of probiotic interventions aimed at restoring a balanced host-symbiont interplay for mitigating behavioral disorders.

microbiology↗

bioRxiv2018

Gut microbiome response to a modern Paleolithic diet in a Western lifestyle context

The progressive reduction of gut microbiome (GM) biodiversity along human evolutionary history has been found to be particularly exacerbated in Western urban compared to traditional rural populations, and supposed to contribute to the increasing incidence of chronic non-communicable diseases. Together with sanitation, antibiotics and C-section, the Western diets, low in microbiota-accessible carbohydrates (MACs) while rich in industrialized and processed foods, are considered one of the leading causes of this shrinkage. However, significant questions remain unanswered, especially whether high-MAC low-processed diets may be sufficient to recover GM diversity in Western urban populations. Here, we profiled the GM structure of urban Italian subjects adhering to the modern Paleolithic diet (MPD), a dietary pattern featured by high consumption of MACs and low-to-zero intake of refined sugars and processed foods, and compared data with other Italian individuals following a Mediterranean Diet (MD), as well as worldwide traditional hunter-gatherer populations from previous publications. Notwithstanding a strong geography effect on the GM structure, our results show an unexpectedly high degree of GM biodiversity in MPD subjects, which well approximates that of traditional populations. Increasing the consumption of MACs at the expense of refined sugars, and minimizing the intake of processed foods, both hallmarks of the MPD, could be the key to rewild the Western microbiota, counteracting the loss of GM diversity and thus restoring evolutionarily important functionality to our gut for improved human health.

microbiology↗