Although the fertilized eggs were found to contain microbes in early studies, the detailed composition of yolk microbiota and its influence on embryo intestinal microbiota have not been satisfactorily examined yet. In this study, the yolk microbiota was explored by using 16s rRNA sequencing at different developmental stages of the broiler embryo. The results showed that the relative abundance of yolk microbiota was barely changed during embryogenesis. According to the KEGG analysis, the yolk microbiota were functionally related to amino acid, carbohydrate, and lipid metabolisms during chicken embryogenesis. The yolk microbiota influences the embryonic intestinal microbiota through increasing the colonization of Proteobacteria, Firmicutes, and Bacteroidetes in the intestine, particularly. The intestinal microbes of neonatal chicks showed higher proportions of Faecalibacterium, Blautia, Coprococcus, Dorea, and Roseburia compared to the embryonic intestinal microbiota. Our findings might give a better understanding of the composition and developmental change of yolk microbiota and its roles in shaping the intestinal microbiota.

The metabolic processes of animals are usually affected by sex. Egg yolk is the major nutrient utilized for the growth and development of a chicken embryo. In this study, we explored the differences of yolk metabolites in male and female chicken embryos by LC–MS/MS. Furthermore, we investigated the mRNA expression of lipoprotein lipase (LPL) and fatty acid synthase (FAS) in chicken embryo liver with different sexes in different embryonic stages. The results showed that the nutrient metabolites in the yolk of female chickens were mainly related to lipid metabolism and amino acid metabolism in the early embryonic stage, and vitamin metabolism in the late embryonic stage. The male yolk metabolites were mainly associated with lipid metabolism and nucleic acid metabolism in the early developmental stage, and amino acids metabolism in the late embryonic stage. There was no significant difference in the expression of LPL or FAS in livers of male and female chicken embryos at different embryonic stages. Our results may lead to a better understanding of the sexual effect on yolk nutrient metabolism during chicken embryonic development.

An essential multiprotein complex in the innate immune system is the NOD-like receptor family, pyrin domain-containing 3 (NLRP3) inflammasome. Through the coordination of upstream sensors and the adaptor protein ASC, which converge on the inflammasome complex in response to pathogens and cellular homeostatic disruptions, a broad range of metabolic danger signals activate the NLRP3 inflammasome. New research demonstrates the anti-inflammatory qualities of natural products, suggesting that they could be used as supplemental treatments for a number of chronic inflammatory conditions, such as diabetes mellitus and cardiovascular disorders. The literature related to inhibition of the NLRP3 inflammasome was compiled using keywords such as “NLRP3 Inflammasome”, “Natural products”, and “Inhibitor” from scientific databases, including “China Knowledge Resource Integrated Databases (CNKI)”, “Google Scholar”, “PubMed”, and “Web of Science” and so on, covering the period from 1997 to 2025. Herbal remedies have shown protection against the activation of the NLRP3 inflammasome. For the treatment of chronic inflammatory illnesses, natural products’ capacity to prevent NLRP3 inflammasome activation offers a novel and practical therapeutic approach. The impact of natural compounds made from medicinal plants on NLRP3 inflammasome activation and their underlying mechanisms of action are the main topics of this review.