Changes in PDGF concentration in surgically treated colorectal carcinoma

Area of Science:

• Oncology
• Biochemistry
• Clinical Diagnostics

Background:

• Colorectal cancer (CRC) is a significant global health concern with high recurrence rates.
• Platelet-derived growth factor (PDGF) is implicated in various cancers.
• Understanding factors influencing PDGF-AB levels in CRC is crucial for diagnostic advancements.

Purpose of the Study:

• To evaluate the impact of tumor advancement, differentiation grade, and surgical treatment on PDGF-AB levels and platelet (PLT) counts in colorectal cancer patients.
• To investigate the influence of blood collection site (arterial vs. venous) on these measurements.
• To explore the relationship between PDGF-AB concentration and PLT count in CRC.

Main Methods:

• A study involving 38 colorectal cancer patients (G2 and G3 differentiation grades) and 24 healthy controls.
• Blood samples collected from CRC patients pre-surgery, intraoperatively, and 90 days post-surgery.
• Serum PDGF-AB concentration measured using ELISA; platelet counts analyzed.

Main Results:

• PDGF-AB levels were several times higher in CRC patients compared to controls, irrespective of tumor grade or blood collection site.
• Significantly higher PDGF-AB levels were observed in advanced G3 tumors compared to G2 tumors, with no difference between arterial and venous blood.
• No significant correlation was found between platelet count and PDGF-AB concentration.

Conclusions:

• Elevated blood PDGF-AB in CRC patients, independent of platelet count, suggests a tumor-derived source.
• PDGF-AB determination in serum shows potential for early diagnosis of colorectal cancer.
• This finding could have implications for monitoring high-recurrence CRC cases.