Abstract
Background and Aims
Fecal microbiota transplantation (FMT) has become the cornerstone in management of recurrent Clostridium difficile infection (RCDI) in adults. However, data on efficacy, safety, long-term outcomes, and microbiota alterations are limited in elderly patients (>65 years).
Methods
Twenty-nine consecutive elderly patients with RCDI underwent FMT with combined jejunal and colonic method and monitored for long-term outcomes. Fecal samples from five elderly RCDI patients (G65) were subjected to genomic analysis before and after FMT, and microbiota changes were compared with matched RCDI patients below 65 years (L65).
Results
FMT resulted in marked improvement in all clinical parameters, including abdominal pain, bloating, and diarrhea in all elderly RCDI patients. Fecal C. difficile toxin was positive in all 29 patients and turned negative in all 27 patients, who agreed to undergo this test after FMT. Statistically significant improvement in leukocytosis was noted (p < 0.05). Only adverse events reported were transient mild fever (2/29) and bloating (3/29). Long-term follow-up over 25.4 ± 12.8 months did not reveal any additional adverse events or RCDI recurrence. Genomic analysis suggested that overall microbiota diversity increased post-FMT in elderly RCDI patients. However, this response was less robust than the younger group. While Firmicutes did not change markedly, Proteobacteria decreased significantly in post-FMT samples in elderly RCDI patients.
Conclusions
These observations suggest that FMT in elderly patients with RCDI appears to be highly efficacious with no recurrence of infection over long-term follow-up. Alterations in microbiota in this group of patients are characterized by less robust increase in microbial diversity and marked reduction in phylum Proteobacteria.
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