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Immunohistochemical localization of lysozyme, lactoferrin, alpha 1-antichymotrypsin, and alpha 1-antitrypsin in salivary gland of human fetuses. 1990

S K Lee, and C Y Lim, and J G Chi, and K Yamada, and M Kunikata, and K Hashimura, and M Mori
Department of Oral Pathology, College of Dentistry, Seoul National University Korea.

26 human fetuses were examined to elucidate the immunohistochemical distributions of lysozyme, lactoferrin, alpha 1-antichymotrypsin, and alpha 1-antitrypsin in prenatal salivary glands. Development of fetal salivary glands was divided into 4 stages: The early developmental stage (EDS), the early intermediate developmental stage (EIDS), the late intermediate developmental stage (LIDS), and the late developmental stage (LDS) and were used to compare antigen localization during salivary gland development. Lysozyme (LY) staining was prominent in serous or demilune cells of the mucous acinar compartment. Lactoferrin (LF) was rarely seen in the fetal glands; only trace amounts were seen in serous cells, alpha 1-antichymotrypsin (alpha 1-ACT) was diffusely positive particularly in glandular ducts, alpha 1-antitrypsin (alpha 1-AT) was also diffusely distributed in all salivary gland elements and was more abundant in ductal cells than acinar cells. During the EDS, immunohistochemical staining of LY, LF, alpha 1-ACT, and alpha 1-AT could be observed with glandular intensity increases corresponding to the advance of cytodifferentiation of granular epithelium occurring in the subsequent EIDS and LIDS. Staining intensities were continuous during the LDS even though the amount of those materials in the fetal salivary glands was not of the extent seen in the adult salivary gland. These results suggest that production of LY, LF, alpha 1-ACT, and alpha 1-AT was positive during prenatal development of human salivary glands. The present study discusses the protective roles and defense mechanisms of LY, LF, alpha 1-ACT, and alpha 1-AT in developing human salivary glands.

UI MeSH Term Description Entries
D007150 Immunohistochemistry Histochemical localization of immunoreactive substances using labeled antibodies as reagents. Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D007781 Lactoferrin An iron-binding protein that was originally characterized as a milk protein. It is widely distributed in secretory fluids and is found in the neutrophilic granules of LEUKOCYTES. The N-terminal part of lactoferrin possesses a serine protease which functions to inactivate the TYPE III SECRETION SYSTEM used by bacteria to export virulence proteins for host cell invasion. Lactotransferrin
D009113 Muramidase A basic enzyme that is present in saliva, tears, egg white, and many animal fluids. It functions as an antibacterial agent. The enzyme catalyzes the hydrolysis of 1,4-beta-linkages between N-acetylmuramic acid and N-acetyl-D-glucosamine residues in peptidoglycan and between N-acetyl-D-glucosamine residues in chitodextrin. EC 3.2.1.17. Lysozyme,Leftose,N-Acetylmuramide Glycanhydrolase,Glycanhydrolase, N-Acetylmuramide,N Acetylmuramide Glycanhydrolase
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D002454 Cell Differentiation Progressive restriction of the developmental potential and increasing specialization of function that leads to the formation of specialized cells, tissues, and organs. Differentiation, Cell,Cell Differentiations,Differentiations, Cell
D002455 Cell Division The fission of a CELL. It includes CYTOKINESIS, when the CYTOPLASM of a cell is divided, and CELL NUCLEUS DIVISION. M Phase,Cell Division Phase,Cell Divisions,Division Phase, Cell,Division, Cell,Divisions, Cell,M Phases,Phase, Cell Division,Phase, M,Phases, M
D005260 Female Females
D005333 Fetus The unborn young of a viviparous mammal, in the postembryonic period, after the major structures have been outlined. In humans, the unborn young from the end of the eighth week after CONCEPTION until BIRTH, as distinguished from the earlier EMBRYO, MAMMALIAN. Fetal Structures,Fetal Tissue,Fetuses,Mummified Fetus,Retained Fetus,Fetal Structure,Fetal Tissues,Fetus, Mummified,Fetus, Retained,Structure, Fetal,Structures, Fetal,Tissue, Fetal,Tissues, Fetal
D005865 Gestational Age The age of the conceptus, beginning from the time of FERTILIZATION. In clinical obstetrics, the gestational age is often estimated from the onset of the last MENSTRUATION which is about 2 weeks before OVULATION and fertilization. It is also estimated to begin from fertilization, estrus, coitus, or artificial insemination. Embryologic Age,Fetal Maturity, Chronologic,Chronologic Fetal Maturity,Fetal Age,Maturity, Chronologic Fetal,Age, Embryologic,Age, Fetal,Age, Gestational,Ages, Embryologic,Ages, Fetal,Ages, Gestational,Embryologic Ages,Fetal Ages,Gestational Ages
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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