1
|
Devalckeneer A, Lu T, Bourgeois P, Maurage CA, Loiez C, Grolez GP, Morales O, Menovsky T, Aboukaïs R, Delhem N. Oral bacterial genic expression detection in aneurysm wall of a French population sample - preliminary monocentric study. Neurosurg Rev 2024; 47:325. [PMID: 39001998 DOI: 10.1007/s10143-024-02548-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 06/18/2024] [Accepted: 07/02/2024] [Indexed: 07/15/2024]
Abstract
INTRODUCTION The etiology of brain aneurysms remains poorly understood. Finnish research suggests that oral bacteria might contribute to the development and rupture of brain aneurysms. Previous studies by our team have not confirmed these findings, likely due to methodological differences. We aimed to replicate the Finnish study with a French population, using the same primers and comparing the results to internal controls. METHODS We used RT-qPCR to retrospectively analyze the expression of oral bacterial genes in eight patients. During surgical procedures, four tissue types were consistently sampled from each patient: the aneurysmal wall, the superficial temporal artery (STA), the middle meningeal artery (MMA), and the dura mater (DM). Results were expressed as fold differences employing the 2-∆∆Ct method, and statistical analyses were performed accordingly. RESULTS Our cohort included eight patients, evenly split into ruptured and unruptured groups. The sex distribution was balanced (4 females, 4 males). We observed DNA expression from oral bacteria in all sampled tissues; however, there were no significant differences between the ruptured and unruptured groups. CONCLUSION We detected oral bacterial gene expression in the aneurysmal wall, STA, MMA, and DM in a sample of French patients. Although limited by the small sample size, our results suggest a potential role for bacterial involvement in vascular invasiveness related to bacteremia. These findings do not definitively link oral bacteria to the pathogenesis of aneurysm development and rupture.
Collapse
Affiliation(s)
- Antoine Devalckeneer
- Department of Neurosurgery, Lille University Hospital, Rue E. Laine, Hôpital Nord, Lille cedex, 59037, France.
- Lille University, INSERM, CHU Lille, U1189-ONCO-THAI-Image Assisted Laser Therapy for Oncology, Lille, F-59000, France.
| | - Tuong Lu
- Department of Neurosurgery, Lille University Hospital, Rue E. Laine, Hôpital Nord, Lille cedex, 59037, France
| | - Philippe Bourgeois
- Department of Neurosurgery, Lille University Hospital, Rue E. Laine, Hôpital Nord, Lille cedex, 59037, France
| | | | - Caroline Loiez
- Department of Microbiology, Lille University Hospital, Hôpital Nord, France
| | - Guillaume Paul Grolez
- Lille University, INSERM, CHU Lille, U1189-ONCO-THAI-Image Assisted Laser Therapy for Oncology, Lille, F-59000, France
| | - Olivier Morales
- Lille University, INSERM, CHU Lille, U1189-ONCO-THAI-Image Assisted Laser Therapy for Oncology, Lille, F-59000, France
- University Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277 - CANTHER - Cancer Heterogeneity Plasticity and Resistance to Therapies, Lille, F-59000, France
| | - Thomas Menovsky
- Department of Microbiology, Lille University Hospital, Hôpital Nord, France
- Department of Neurosurgery, Antwerpen University Hospital, Antwerp, Belgium
| | - Rabih Aboukaïs
- Department of Neurosurgery, Lille University Hospital, Rue E. Laine, Hôpital Nord, Lille cedex, 59037, France
- Lille University, INSERM, CHU Lille, U1189-ONCO-THAI-Image Assisted Laser Therapy for Oncology, Lille, F-59000, France
| | - Nadira Delhem
- Lille University, INSERM, CHU Lille, U1189-ONCO-THAI-Image Assisted Laser Therapy for Oncology, Lille, F-59000, France
| |
Collapse
|