Localization of lysozyme mRNA in the labial salivary glands by in situ hybridization in Sjögren's syndrome.
In this study, lysozyme mRNA in labial salivary glands has been localized with in situ hybridization technique using 35S-labeled hen lysozyme cDNA (cDNALZM) as a hybridization probe in normals and in patients with Sjögren's syndrome, 35S-DNALZM:mRNA hybrids were detected only in acinar serous cells, although lysozyme was identified in ductal cells using immunohistochemical techniques. Our results suggest that the serous acinar cells are the only site of lysozyme synthesis in small salivary glands. The presence of lysozyme in ductal cells may be a result of reabsorption from the saliva or concentration from the blood or surrounding tissues.
Fourth Department of Medicine, Helsinki University Central Hospital, Finland.
Y T
YT
Konttinen
M
M
Kulomaa
M
M
Segerberg-Konttinen
D
D
Nordström
R
R
Keinänen
M
M
Grönblad
M
M
Malmström
D001345:Autoradiography; D015342:DNA Probes; D006801:Humans; D007150:Immunohistochemistry; D008046:Lip; D009113:Muramidase / Q000235:genetics*; D009693:Nucleic Acid Hybridization; D012333:RNA, Messenger / Q000378:metabolism*; D012469:Salivary Glands / Q000201:enzymology*; D012470:Salivary Glands, Minor / Q000201:enzymology* / Q000648:ultrastructure; D012859:Sjogren's Syndrome / Q000201:enzymology* / Q000473:pathology
D015342:DNA Probes; D012333:RNA, Messenger; D009113:Muramidase