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Electrochemotherapy associated with calcium electroporation in metastatic feline cutaneous malignant melanoma

Anjos, Denner Santos Dos; Rodrigues, Cecilia Gomes; Silva, Nicilene Cardoso; De Nardi, Andrigo Barboza; Fonseca-Alves, Carlos Eduardo.
Acta sci. vet. (Online); 47(suppl.1): Pub. 435, Oct. 30, 2019. ilus, tab
Artigo em Inglês | VETINDEX | ID: vti-25726

Resumo

Background: Calcium electroporation (CaEP) is a novel therapeutic treatment that has been studied for cancer due to itsselective killing cancer cells by necrosis and danger signals. Besides that, electrochemotherapy (ECT) is an effective local treatment that involves the administration of chemotherapeutic drugs followed by delivery of electrical pulses to thetumor. The combination with ECT and CaEP has been reported in literature suggesting that additional response of immunesystem could have been enhanced by electroporation with calcium. This case, report on the successful treatment with CaEPcombined with ECT for treatment of a regional metastasis in a feline model of malignant melanoma.Case: A 9-year-old, mixed breed cat was referred to the veterinary clinic with a 2-month history of cutaneous peripalpebralplaque lesion (0.19 cm³) and a submandibular lymph node enlargement (0.5 cm³). Incisional biopsy of the cutaneous lesionand fine-needle aspiration of submandibular lymph node confirmed a cutaneous melanoma with submandibular lymph nodemetastasis. Tumor staging was set in T1N1M0 according to WHO staging criteria. ECT for the primary lesion and lymphnode metastasis was proposed. For the ECT, bleomycin (15,000 UI/m²) application was performed intravenous followedby electroporation (8 pulses of 100 μs at 1000 V/cm, and 1 Hz) using a needle array electrode consisted of two parallelrows with six needles in each row. At 28-day post-ECT complete remission of the primary tumor and metastatic foci wasachieved. However, 120 days after ECT, recurrence was observed in submandibular and retropharyngeal...(AU)
Biblioteca responsável: BR68.1
Localização: BR68.1