2000, Number 4
<< Back Next >>
Vet Mex 2000; 31 (4)
A paraffin inclusion method for fast diagnosis using microwaves
Garrido FGI, Cornejo CMÁ
Language: English/Spanish
References: 9
Page: 373-377
PDF size: 40.76 Kb.
ABSTRACT
A protocol for fast embedded paraffin by a microwave process for histological and clinical samples for light microscopy was developed. Tissue specimens, dog’s liver, polyp, skin and lung, cat’s brain, kidney, and rat’s ovary, uterine horn and artery were processed by using a standard household microwave oven (600 watts) at 75% power. This study was done using progressive alcohol solutions (dehydratation), bencene-etanol solutions (clearing) and paraffin for the infiltration. A group of specialists reviewed the material and photographs of the different organs processed with three different inclusion techniques. Results of the observation revealed: no difference between the histokinette (HK) and microwave oven. There were apparent morphological differences between the last two processes and the Robinson & Fayen technique (RF). This process could allow results to be reported within 30 min after the specimens were evaluated in the laboratory. The morphology for the microwave-processed samples was better than the one observed by the fast diagnostic process technique of RF, and no discerning differences with the routine histokinette method were found.
REFERENCES
Degen T, Standler E. Ovoposition of carrot fly Psila rosae in response to foliage and leaf surface extracts of host plants. Chemoecology 1998;8:39-49.
Ueda K. On the drying characteristics of soil column in a microwave oven. Bulletin of the University Osaka Prefecture. Series B. Agric Life Sci 1996;48:65-67.
Alegría A, Barbera R, Farre R, Lagarda MJ, Lorente RM, Torres A. Efectiveness of microwave based digestion procedures for the demineralization of human milk and infant formulas prior to fluorometric determination of selenium. Nährung 1996;40:92-95.
Arellano B, Valero G. Uso del horno de microondas en la fijación de tejidos para histopatología. Memorias del XIV Congreso Panamericano de Ciencias Veterinarias; 1994 octubre 9-15; Acapulco (Guerrero) México. México (DF): Asociación Panamericana de Ciencias Veterinarias, 1994:201.
Davis C, Neill S, Pushker R, Raj P. Microwave fixation of rabies specimens for fluorescent antibody testing. J Virol Methods 1997;68:177-182.
Kanai K, Nunoya T, Shibuya K, Nakamura T, Tajima M. Variations in effectiveness of antigen retrieval pretreatments for diagnostic immunohistochemistry. Res Vet Sci 1998;64:57-61.
Giberson RT, Demaree RS Jr., Nordhausen RW. Four-hour processing of clinical/diagnostic specimens for electron microscopy using microwave technique. J Vet Diagn Invest 1997;9:61-67.
Tanimoto T, Ohsuki Y. Evaluation of antibodies reactive with porcine lymphocytes and lymphoma cells in formalin-fixed, paraffin-embedded, antigen-retrieved tissue sections. Am J Vet Res 1996;57:853-859.
Robinson y Fayer. Técnica de Róbinson y Fayen. Curso de técnicas histológicas e histopatológicas. México (DF): Escuela Superior de Medicina, Instituto Politécnico Nacional, 1991.