[Chemosensitivity test for 170 human breast carcinoma samples].

Area of Science:

• Oncology
• Pharmacology
• Cancer Research

Context:

• Breast carcinoma is a significant global health concern.
• Chemotherapy remains a cornerstone of breast cancer treatment.
• Understanding in vitro drug sensitivity is crucial for optimizing treatment strategies.

Purpose:

• To evaluate the in vitro sensitivity of primary breast carcinoma samples to a panel of commonly used chemotherapeutic agents.
• To identify drugs with higher efficacy and explore factors influencing drug response.
• To investigate the potential of Cyclosporin A in overcoming adriamycin resistance.

Summary:

• This study assessed the in vitro sensitivity of 170 primary breast carcinoma samples to nine chemotherapy drugs.
• High sensitivity rates were observed for 5-fluorouracil (57.1%), mitomycin C (49.4%), and cisplatin (48.3%).
• No significant correlation was found between drug sensitivity and pathological type, clinical stage, ER, or EGFR expression. Cyclosporin A showed potential in enhancing sensitivity in adriamycin-resistant cells.

Impact:

• Identifies 5-fluorouracil, mitomycin C, and cisplatin as potentially more effective agents for breast carcinoma based on in vitro sensitivity.
• Suggests that drug selection should not be based on ER, EGFR status, or tumor type.
• Highlights a potential strategy to overcome adriamycin resistance in breast cancer treatment.