In the context of migration, different perspectives of child agency can influence childcare practices and may create tensions within families and in the host society.This study explores the individual, relational, environmental, and cultural factors that influence how child agency is understood and exercised within immigrant households. Focus group discussions were conducted with first-and secondgeneration immigrant children (12-to 17-year-old) (N = 46) and parents (N = 19) from South-Asia, Latin-America and the Caribbean in Montreal. Our findings suggest that children exercise agency by taking actions to ensure their own safety and contributing to their families' needs. Moreover, we found that negotiating children's agency is influenced by the nature of the parent-child relationship, the material and social resources available to the family, and the perceived and lived experiences of authority and safety in the host society. This study advances our understanding of how immigrant children contribute to their families and the role that contextual factors play in shaping, promoting and hindering child agency. Policy makers and service providers in host societies should consider the perspectives of immigrant children and parents in order to develop a more culturally responsive understanding of the elements and processes that influence childcare and supervision practices of immigrant families.
Background
The standard treatment of colorectal cancer (CRC) consists of a surgical resection of the colonic segment with the tumor, followed by a reconnection of the remaining bowel ends, or "anastomosis". The anastomosis may fail to heal in up to 20% of patients, which leads to anastomotic leak, a major complication that increases postoperative morbidity and mortality. This complication is unpredictable and its causes remain poorly understood.
Purpose
The objective of this study is to investigate the possible role of the gut microbiome in anastomotic healing after surgery in patients with CRC.
Method
We collected preoperative fecal samples and intraoperative mucosal samples from CRC patients undergoing surgery with anastomosis. The gut microbiota of patients with AL and of others that presented optimal healing after surgery was analyzed and compared using the Anchor 16S pipeline. To assess the role of the patients' microbiota in healing, fecal microbiota transplantation (FMT) was performed in mice using preoperative fecal samples from CRC patients with and without AL. Mice were then subjected to colonic surgery using a colonic anastomosis model. Six days after surgery, anastomotic healing was assessed macroscopically and microscopically. The gut barrier function was also assessed. The gut microbiota composition was compared between the groups colonized with samples from patients with and without AL to detect potential differences.
Result(s)
Mice colonized by FMT with the microbiota of donors with AL displayed poor anastomotic healing macroscopically, and a weaker wound microscopically. These same mice displayed a weaker gut barrier, as objectified by higher bacterial translocation to the spleen. The anastomoses of mice receiving the microbiota of AL donors displayed lower concentrations of collagen and fibronectin and higher inflammatory cytokines and collagenolytic enzymes, indicating poor extracellular matrix formation and collagen degradation locally.The beta-diversity of the gut microbiota was significantly different between mice receiving the microbiota of donors with and without AL, and several bacterial species were differentially abundant between the two groups.
Conclusion(s)
The preoperative gut microbiota in CRC patients who experience anastomotic leak after surgery induces poor anastomotic healing in mice and a weaker gut barrier after colonic surgery. Several bacterial species were found to be associated with the healing process.
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CIHR, Other
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NSERC, FRQS, New Frontiers in Research, Montreal Cancer Institute.
Disclosure of Interest
None Declared
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