A NOVEL THERAPEUTIC COMBINATION OF VINCRISTINE AND IVERMECTIN IN THE TREATMENT OF TRANSMISSIBLE VENEREAL TUMOUR IN BITCHES
760 / 317
Keywords:
Ivermectin, Transmissible venereal tumour, Treatment, VincristineAbstract
The transmissible venereal tumour (TVT) is a contagious neoplasm that is sexually transmitted between dogs. TVT lesions affect the mucus membranes of the external genitalia in dogs of both sexes. Tumour masses are seen in the caudal aspect of the penis and frequently the prepuce area in males and the posterior vaginal area, particularly the vestibule vaginal junction of females. Sixteen bitches of various ages (2-6 years) and breeds were brought to the clinics at Veterinary Clinical Complex, Gannavaram with the history of continuous oozing of blood from vagina, anorexia and depression. All these were diagnosed as TVT based on the history, clinical symptoms and cytological examination and therapy was initiated. At weekly intervals, all the bitches were administered with combination therapy of Vincristine sulphate (0.025 mg/kg body weight, strict and slow I/V) and Ivermectin (0.2 mg/kg body weight, strict S/C) for four consecutive weeks. All of the bitches underwent significant reduction in tumour size with improvement in general health during the course of therapy with exception that one bitch showed signs of anorexia and dullness.
Downloads
References
Abeka, Y.T. (2019). Review on Canine Transmissible Venereal Tumor (CTVT). Cancer Therapy and Oncology International Journal, 14: 86-94.
Bulhosa, L.F., Estrela-Lima, A., da Silva Solcà, M., Gonçalves, G.S.D., Larangeira, D.F., de Pinho, F.A. and Barrouin-Melo, S.M. (2020). Vincristine and ivermectin combination chemotherapy in dogs with natural transmissible venereal tumor of different cyto-morphological patterns: A prospective outcome evaluation. Animal Reproduction Science, 216: 106358.
Frampton, D., Schwenzer, H., Marino, G., Butcher, L.M., Pollara, G., Kriston- Vizi, J., Venturini, C., Austin, R., De Castro, K.F., Ketteler, R. and
Chain, B. (2018). Molecular signatures of regression of the canine transmissible venereal tumor. Cancer cell, 33(4): 620-633.
Gaspar, L.F.J., Ferreira, I., Colodel, M.M., Brandão, C.V.S. and Rocha, N.S. (2010). Spontaneous canine transmissible venereal tumor: cell morphology and influence on P-glycoprotein expression. Turkish Journal of Veterinary and Animal Sciences, 34(5): 447-454
Jiang, L., Wang, P., Sun, Y.J. and Wu, Y.J. (2019). Ivermectin reverses the drug resistance in cancer cells through EGFR/ERK/Akt/NF-κB pathway. Journal of Experimental and Clinical Cancer Research, 38(1): 1-18.
Kumar, K., Jha, A.K., Ray, K., Gautam, A.K. and Singh, D. (2021). Diagnosis of TVT with cell cytology and efficacy of treatment with vincristine sulfate in non-descriptive Indian canine breeds. Indian Journal of Animal Research, 55(11): 1352-1355.
Ramadinha, R.R., Teixeira, R.D.S., Bomfim, P.C., Mascarenhas, M.B., França, T.D.N., Peixoto, T.D.C., Costa, S.Z.R. and Peixoto, P.V. (2016).
Response of canine transmissible venereal tumor to vincristine sulfate and vinblastine sulfate chemotherapy. Revista Brasileira de Medicina Veterinária, 38(Suppl. 1): 65-69.
Filho, R.,Torres, N.P., Silva, A.A.A., Ventura, M.P.C., Basso, R.F.A., Ferreira, K.M., De Nardi, M.G.P.A., Floriano, A.B and Calderón, C. (2020). Transmissible venereal tumor: cell proliferation (agnor) and response to chemotherapy correlated with cytomorphological classification. Ars Veterinaria, 36(2): 140-147.
Said, R. and Tsimberidou, A.M. (2014). Pharmacokinetic evaluation of vincristine for the treatment of lymphoid malignancies. Expert opinion on drug metabolism and toxicology, 10(3): 483-494.
Scarpelli, K.C., Valladao, M.L. and Metze, K. (2010). Predictive factors for the regression of canine transmissible venereal tumor during vincristine therapy. The Veterinary Journal, 183(3): 362-363.
Sewoyo, P.S. and Kardena, I.M. (2022). Canine transmissible venereal tumor: treatment review and updates. Revista Electronica de Veterinaria, 01-07.
Downloads
Submitted
Published
Issue
Section
License
All the copy right belongs to the sponsoring Organization, Tamil Nadu Veterinary and Animal Sciences University, Chennai - 51.