Effects of pre- and postnatal protein deprivation on rat's hard palatine mucosae: a scanning electron microscopic study of the connective tissue papillae.
The primary (connective tissue papillae) and secondary projections of the subepithelial connective tissue of the lamina propria were studied in the hard palate of normal (control group), and in protein-deficient pups (experimental group) obtained through maternal protein deprivation during pregnancy and lactation. At birth, the primary projections in the control group are more developed in width whereas in the experimental group they are thin with a crest-like shape. On day 7 of lactation, the primary projections are abundant, well developed and regularly arranged in the control group. They are few in number and are irregular in shape and disposition in the experimental group. The secondary projections are located posterior to the primary ones in the control group and are intercalated with them in the experimental group. On day 21 of lactation, the characteristic foliate aspect of the primary projections are noted in the control group. In the experimental group they remain thin with a crest-like aspect.
Boldrini
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SC
Department of Anatomy, Biomedical Sciences Institute, University of São Paulo, Brazil.
Watanabe
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I
König Júnior
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B
Liberti
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EA
D000818:Animals; D003238:Connective Tissue / Q000473:pathology / Q000648:ultrastructure*; D005260:Female; D007774:Lactation; D008855:Microscopy, Electron, Scanning; D009061:Mouth Mucosa / Q000473:pathology / Q000648:ultrastructure*; D010159:Palate / Q000473:pathology / Q000648:ultrastructure*; D011247:Pregnancy; D011248:Pregnancy Complications; D011297:Prenatal Exposure Delayed Effects; D011502:Protein-Energy Malnutrition / Q000196:embryology / Q000473:pathology; D051381:Rats; D017208:Rats, Wistar; D012016:Reference Values