Lymph Node Metastasis, Microbial Colonization, Pancreatic Cancer
Conditions
Keywords
pancreatic cancer, microbiome, metabolite, lymph node metastasis
Brief summary
This study investigates the association between gut microbiota and lymph node metastasis (LNM) in pancreatic cancer. While gut microbial dysbiosis has been linked to pancreatic cancer development and distant metastasis, its role in LNM remains unclear. By comparing the gut microbiota and metabolite profiles of patients with and without LNM, the study aims to identify key microbial and metabolic signatures linked to metastasis. Additionally, predictive models will be developed to facilitate preoperative identification of high-risk patients, with the goal of improving clinical decision-making and treatment planning.
Detailed description
Pancreatic cancer is one of the most aggressive malignancies of the digestive system, characterized by an insidious onset, early lymph node metastasis (LNM), poor prognosis, and resistance to chemotherapy and radiotherapy. LNM is recognized as an independent prognostic factor affecting patient survival. Dysbiosis of the gut microbiota has been implicated in cancer development and progression by influencing metabolic and immune functions. Previous studies demonstrated that gut microbiota is altered in patients with pancreatic cancer, and microbial signatures may serve as potential diagnostic markers. Moreover, gut microbiota has been reported to predict distant metastasis in pancreatic cancer patients. However, the relationship between gut microbiota and lymph node metastasis in pancreatic cancer remains unexplored. This study aims to characterize the differences in gut microbial composition between pancreatic cancer patients with and without LNM, identify key microbial taxa and metabolites associated with LNM, and elucidate their potential roles in mediating metastasis. Furthermore, we seek to develop predictive models based on microbiome and metabolite profiles for LNM to facilitate preoperative identification of high-risk patients, ultimately optimizing clinical decision-making and therapeutic strategies.
Interventions
OTHERlymph node metastasis
Histopathological examination confirmed the presence of at least one lymph node metastasis
Sponsors
Peking Union Medical College Hospital
Study design
Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No
Inclusion criteria
* 18-75 years * Agree to participate in the study
Exclusion criteria
* A prior diagnosis of other malignancies, infectious diseases, psychiatric or neurodegenerative disorders, or conditions affecting the oral or gastrointestinal systems; * Recent medical treatments or procedures within specific time frames, including: (a) Use of antibiotics, hormone therapy, or immunosuppressive agents within the past three months. (b) Undergoing gastrointestinal reconstructive surgery within the past three months. (c) Regular use of laxatives, antidiarrheal medications, or high-dose probiotics within the past month. (d) Participation in gastrointestinal examinations within the past three days
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| microbiota profiles | Through the completion of study, an average of 3 years | microbiota profile by metagenomic of the two groups |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| metabolite profiles | Through the completion of study, an average of 3 years | metabolite profile by metabolomic of the two groups |
Countries
China
Outcome results
None listed