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Bacteriology of the appendix and the ileum in health and in appendicitis
H Thadepalli1, A K Mandal, S K Chuah
1Department of Internal Medicine, Charles R. Drew University of Medicine and Science, UCLA School of Medicine 90059.
Abstract:
The bacteriology of the ileum and the appendix in appendicitis patients with or without perforation and compared with patients who had "incidental appendectomy" was studied. Of 42 appendicitis patients, 24 (57%) of them had anaerobic bacteria in the appendix compared with two of eight (25%) with normal appendix. Anaerobes were found in the ileal aspirates of 20 of 42 (47.6%) appendicitis patients and two of eight (25%) in normal persons. This suggests that anaerobic bacteria increasingly colonize the appendix and the ileum in cases of appendicitis.
Insights
Anaerobic bacteria are more prevalent in the appendix and ileum of appendicitis patients. This bacterial overgrowth suggests a potential role in the development of appendicitis.
Area of Science:
- Microbiology
- Gastroenterology
- Surgical Pathology
Background:
- Appendicitis is a common surgical emergency.
- The role of bacterial infection in appendicitis pathogenesis is not fully understood.
- Previous studies have focused on aerobic bacteria, with less attention to anaerobic flora.
Purpose of the Study:
- To investigate the prevalence and types of anaerobic bacteria in the appendix and ileum of patients with appendicitis.
- To compare the appendiceal and ileal bacteriology between appendicitis patients and those undergoing incidental appendectomy.
- To determine if anaerobic bacteria colonization is associated with appendicitis.
Main Methods:
- Bacteriological analysis of ileal aspirates and appendiceal tissue samples.
- Comparison of bacterial findings between appendicitis cases and controls (incidental appendectomy).
- Quantitative and qualitative assessment of anaerobic bacterial presence.
Main Results:
- Anaerobic bacteria were detected in 57% of appendicitis patients' appendices versus 25% in controls.
- Ileal aspirates from appendicitis patients showed a 47.6% prevalence of anaerobes, compared to 25% in controls.
- A higher incidence of anaerobic bacteria was observed in both the appendix and ileum of appendicitis patients.
Conclusions:
- Anaerobic bacteria are frequently found in the appendix and ileum of patients with appendicitis.
- The increased colonization by anaerobic bacteria suggests a potential contributing factor in the development of appendicitis.
- Further research is warranted to elucidate the specific role of these anaerobes in appendicitis pathogenesis.