[Importance of sucking stimulation in lactation: histological aspects of the mammary gland in the rat].
The Authors refer the results of a study concerning the mammary gland of lactating rats subjected to suctional stimuli of different intensities. We made used of Wistar rats subdivided in 3 groups: Group A: each lactating 8 pups; Group B: 8 days before the birth we provided to hide the nipples of a half of the breasts with sutures like tobacco-pouch. The animals were anesthetized with ether. Each rat lactates 4 pups. Group C: They do not lactate. In the 6th day of suckling we took away the newborn from theirs mothers for 8 Hours and then we put them to lactate for other 4 hours. After this period we removed the mammary glands. We prepared this material as the routine methods for optical microscopy and after wards we stained with Hematoxylin-Eosin. Direct relationship is demonstrated between the intensity of suctional stimulus and morphologically evaluated synthetic activity.
D000818:Animals; D005260:Female; D007774:Lactation; D008321:Mammary Glands, Animal / Q000166:cytology*; D011247:Pregnancy; D051381:Rats; D011919:Rats, Inbred Strains; D013391:Sucking Behavior
Importanza dello stimolo suzionale nell'allattamento: quadri istologici di ghiandola mammaria di ratto.