Lavielle RE, Carmona AMB, Pérez-Martínez M

Language: English/Spanish
References: 23
Page: 229-236
PDF size: 340.23 Kb.

ABSTRACT

The present study was carried out to determine the pattern of distribution of mast cells (MC) in the dermis of bitches exposed to two climatic conditions in Mexico: sub-humid temperate and sub-humid warm. Skin samples were obtained from adult bitches of different breeds, which came from Mexico City (n = 5) and the Port of Veracruz, Mexico (n = 5). These samples were obtained from four different anatomical sites (dorsal, costal, lateral femoral and ventral) and were fixed in saline formaldehyde during 72 hours. After fixation dyed with toluidine blue to count the MC per mm² in superficial and reticular dermis. The total number of these cells was greater in the animals exposed to the sub-humid warm climate than the amount found in the animals exposed to the sub-humid temperate climate. Statistically there were significant differences between the two climatic conditions at level of the papillary dermis of the dorsal (P = 0.01), ventral (P = 0.09) and costal (P = 0.14) regions and in the reticular dermis of the femoral region (P = 0.12). These results provide evidence that the number of mast cells differs in the bitch dermis and show that these quantitative differences are related to the climatic condition.

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