The human oral mucosa has noncornified lining epithelium, cornified masticatory epithelium, and complex epithelium. The epithelium of human tongue shows diverse morphological variations from one site to another, and conflicting reports exist in the literature concerning the type of lingual epithelium. Cytokeratin[CK] have been shown to characterize different type of epithelia. In the present study to clarify intermediate filament patterns of tongue mucosa and lingual gland in human fetus from second trimester of pregnancy and adult, cytokeratin expression was investigated immunohistochemically using antibodies for cytokeratins in the dorsal surface of tongue, taste bud, and lingual gland, and comparison with the expression between fetus and adult was made. The epithelium of the fetal lingual papillae consisted of 4 to 6 layered stratified cells, and that of the inferior surface of tongue consisted of 6-8 layered stratified cells in PAS-hematoxylin stain. The lingual gland was well differentiated and the alveolus was strongly positive to PAS reaction. The dorsal surface of the adult tongue was composed of lingual papillae. The papillae was covered by keratinized stratified squamous epithelium and interpapillary area by nokeratinized epithelium in hematoxylin-eosin stain. The taste bud was present in the fungiform papilla. The lingual gland appeared among the muscle layers near the inferior surtace and was composed of mucous and serous cells. By immunohistochemical stain, the epithelium of the lingual papillae exhibited various staining-intensities for cytokeratin antibodies, and showed same staining patterns bosh epithelium in tip of papilla and interpapillary area in fetus. However, the dorsal epithelium of the adult tongue showed different staining patterns between tip of the papilla and interpapillary area. In fetal lingual papilla CK7 and CK8 were expressed in superficial cells, AE8 in intermediate and superficial cells, CKl4 in basal cells. MNFI116 and AE3 showed a strong reaction in basal and suprabasal cells. The epithelium of the inferior lingual surface reacted positively with AE8 and CK14, MNF116, and AE3. CK7 and CK8, however, were not reacted. In adult lingual papilla CK10 was expressed in superficial cells of the tip of the papilla, AE8 in suprabasal cells of interpapillary epithelium, CKl4 in basal cells of papillary and interpapillary epithelium, CKl9 in superficial cells of interpapillary epithelium, MNFI116 and AE3 in suprabasal cells of papillary and interpapillary epithelium. However, CK7, CK8, CK18, and 5D3 were not expressed in the epithelium of the dorsal tongue. The cells of taste bud in fetus showed positive reactions for CK7, CK8, MNF116, and AE3, but negative reactions with CK10 and AE8. The cells of taste bud in adult were stained with CK7, CK8, CK18, and MNF116, but not stained with CK10 and AE8. In lingual gland of fetus, CK7, CK8, CKl8, 5D3, MNF116, and AE3 were expressed in alveolar cells. Only CK10 gave a negative staining in ductal cells. The mucous cells of the adult lingual gland were reacted with CK7, CK10, CK18, CK19, and MNF116, and the serous cell with CK7, CK19, and MNF116. The ductal cells of the adult lingual gland were stained with CK7, AE8, CK18, CKl9, 5D3, MNF116, and AE3. CK14 was expressed in the cells of intralubular ductule, not in the ductal cells. By electron microscopy, the epithelia of both dorsal and inferior lingual surfaces in fetus consisted of nonkeratinized stratified squamous epithelium. A cell with clear cytoplasm and some dense granules was noted among the basal cells. These results indicate that the epithelium of fetal lingual papillae is non-keratinized type and the epithelium of the papillary tip is keratinized type and interpapillary epithelium is nonkeratinized type in adult, and suggest that the superficial cell containing cytokeratins 7 and 8 in dorsal lingual epithelium of fetus has a similar role to the periderm of fatal skin.
Adult ; Antibodies ; Cytoplasm ; Epithelium* ; Female ; Fetus* ; Humans* ; Immunohistochemistry ; Intermediate Filaments ; Keratins ; Microscopy, Electron ; Mouth Mucosa ; Mucous Membrane ; Negative Staining ; Periodic Acid-Schiff Reaction ; Pregnancy ; Pregnancy Trimester, Second ; Skin ; Taste Buds ; Tongue

No abstract available.
Carcinoma, Squamous Cell* ; Female ; Ovary*

No abstract available.
Aorta, Thoracic* ; Blood Flow Velocity* ; Pregnancy*

We investigated the effect of lysophosphatidic acid (LPA) in experimental acetaminophen (APAP)-induced acute liver injury. LPA administration significantly reduced APAP-challenged acute liver injury, showing attenuated liver damage, liver cell death and aspartate aminotransferase and alanine aminotransferase levels. APAP overdose-induced mortality was also significantly decreased by LPA administration. Regarding the mechanism involved in LPA-induced protection against acute liver injury, LPA administration significantly increased the glutathione level, which was markedly decreased in APAP challenge-induced acute liver injury. LPA administration also strongly blocked the APAP challenge-elicited phosphorylation of JNK, ERK and GSK3β, which are involved in the pathogenesis of acute liver injury. Furthermore, LPA administration decreased the production of TNF-α and IL-1β in an experimental drug-induced liver injury animal model. Mouse primary hepatocytes express LPA₁(,)₃–₆, and injection of the LPA receptor antagonist KI16425 (an LPA₁(,)₃-selective inhibitor) or H2L 5765834 (an LPA₁(,)₃(,)₅-selective inhibitor) did not reverse the LPA-induced protective effects against acute liver injury. The therapeutic administration of LPA also blocked APAP-induced liver damage, leading to an increased survival rate. Collectively, these results indicate that the well-known bioactive lipid LPA can block the pathogenesis of APAP-induced acute liver injury by increasing the glutathione level but decreasing inflammatory cytokines in an LPA₁(,)₃(,)₅-independent manner. Our results suggest that LPA might be an important therapeutic agent for drug-induced liver injury.

No abstract available.

BACKGROUND: Patients with sinus rhythm, the left atrial appendage(LAA) appeared as a vigorously contracting structure and the blood flow patterns of LAA showed biphasic configuration. However, patients with AF rhythm the blood flow showed irregular or no configuration in doppler echocardiographic study. The purpose of this study is to evaluate relationship between the blood flow patterns of LAA with the presence of spontaneous contrast(SC) and thrombi in LAA. METHODS: We performed TEE and TTE simultaneously to 58 consecutive patients who had native mitral valve disease or mitral prosthesis. Spontaneous contrast(SC) and the presence and location of LAA thrombi were evaluated during TEE and left atrial dimension(LAD) & ejection fraction(EF) were evaluated during TTE. We divided the whole subjects into three groups according to the blood flow patterns ; regular pattern(Group 1), irregular pattern(Group 2), no flow pattern(Group 3). RESULTS: 1) Blood flow within the left atrial appendage is divided with three groups among of them, atrial fibrillation have two blood flow patterns. 2) Peak prositive & negative flow velocity within LAA in AF rhythm groups were slower than normal sinus rhythm group.(p<0.01) 3) Left atrial dimension in group 3 is significantly larger than others groups.(p<0.01) 4) Spontaneous contrast(SC) with LAA could be detected in 2(6.8%) of the 29 patients of group 1, 6(31.5%) of the 19 patients of group 2, 10(100%) of the 10 patients of group 3. Incidence of SC within LAA in group 3 is significantly higher than others groups. 5) LAA thrombi could be detected in 1(3.4%) of the 29 patients of group 1, 1(5.2%) of the 19 patients of group 2, 3(30%) of the 10 patients of group 3. Incidence of LAA thrombi is significangly higher than other groups. CONCLUSIONS: We can suggest that blood flow within LAA is divided into three groups according to the blood flow patterns, and spontaneous contrast and thrombi in LAA were closely related with the blood flow pattern.
Atrial Appendage ; Atrial Fibrillation ; Echocardiography ; Humans ; Incidence ; Mitral Valve ; Prostheses and Implants

The soleal line in 115 (left; 61, right; 54) cases of tibiae was studied morphometrically by the method of Mysorekar and Nandedkar. 1. The soleal line showed a uniform character throughout in 26 cases and a mixed characters in 89 cases. The bones showing uniform character were seen generally as a lineal line or wide line. 2. The soleal line having mixed characters divided into three parts. In the upper and middle thirds, the major type of line was wide line. In the lower third, the line was commonly seen as a lineal line. In about 12% of the bones examined the line was seen as a groove, particularly in the middle and lower thirds. 3. The soleal line commenced 1-2cm below the fibular facet In about 61% of cases. 4. The length of the soleal line was 10.5cm, and the ratio to that of the tibia was about 30%. The results of this study provide the characters of the soleal tne of the tibia in Korean. The soleal line, unlike the textbook description, generally shows mixed characters of a line.
Methods ; Tibia*

BACKGROUND: Although a number of indices of diastolic function based on transmitral flow have been proposed, no single factor seems to be adequate for seperating patients with normal from with abnormal diastolic functions. Pulsed Doppler echocardiography of pulmonary venous flow(PVF) is another non-invasive method to evaluate left ventricular diastolic performance. The purpose of this study is to evaluate the normal PVF pattern by TEE. METHOD: We performed pulsed-wave Doppler studies of the PVF and of the mitral flow by transesophageal-(TEE) and transthoracic echocardiography(TTE) in a healthy young adults. RESULTS: In TEE, all sublects showed four phases of the PVE pattern ; two antewgrade systolic phase(early and late : SE and SL), one antewgrade diastolic phase(D) and one retrograde diastolic phase(A). In TTE, there were three phases of the PVF pattern ; two antewgrade phase(systolic, diastolic) and one retrograde diastolic phase but we couldn't find out early systolic phase flow. Peak velocity of each phase of PVF was as follows:SE was 48.9+/-14.1cm/sec, SL was 56.3+/-16.1cm/sec, D was 52.6+/-14.9cm/sec. The timing of SL flow was correlated significantly with that of peak aortic flow(r=0.42, p=<0.01), while the timing of D flow and that of A flow were correlated significntly with timing of mitral E peak and A peak, respectively(r=0.84, p<0.01 ; r=0.80, p<0.01). CONCLUSIONS: In the young normal subject, PVF showed four phase of flow pattern and could be easily obtained by TEE. Furthermore it may be used for evaluation of left ventricular function.
Echocardiography, Doppler, Pulsed ; Echocardiography, Transesophageal* ; Humans ; Ventricular Function, Left ; Young Adult*

BACKGROUND AND OBJECTIVES: The identification of a specific etiology of effusive pericardial disease is difficult because of the limited yield of cytologic and microbiologic pericardial fluid analysis. We performed retrospective study to find out whether pericardial biopsy was superior to pericardial fluid analysis in search of the etiology of pericardial effusion. MATERIALS AND METHOD: We reviewed 76 cases of moderate to severe pericardial effusion on which we performed surgical pericardial biopsy from Sep. 1986 to Sep. 1996. The results of pericardial fluid analysis, clinical manifestation, pericardial biopsy were compared retrospectively. RESULTS: 1)Clinical diagnosis of pericardial effusion were as follow:neoplastic disease (7.9%), tuberculosis (72.4%), constrictive pericarditis (17.1%), and others (2.6%). 2)By the percutaneous pericardial biopsy, we confirmed 19 cases (25%). Etiology of 4 cases (5.3%) were malignancy and 15 cases (19.7%) tuberculosis. Fifteen out of 76 patients who were diagnosed by biopsy as tuberculous pericarditis and 28 patients who were suspected as tuberculous pericarditis clinically were treated with antituberculous medications. Ten patients (66.7%) of pathologically diagnosed patients and 18 patients (69.2%) of clinically diagnosed patients showed complete resolution of pericarditis. CONCLUSION: By pericardial biopsy, we only confirmed 19 cases (25.0%). It means that pericardial biopsy is not superior to pericardial fluid analysis in searching of etiology of pericardial effusion. Moreover, it is not sufficient for final diagnosis of pericardial effusion.
Biopsy* ; Diagnosis ; Humans ; Pericardial Effusion ; Pericarditis ; Pericarditis, Constrictive ; Pericarditis, Tuberculous ; Retrospective Studies ; Tuberculosis

Ganglioneuromas of retroperitoneal cavity which not originate from adrenal gland are very rare tumor, and usually recognized incidental to some other aliment or on a routine physical examination. Ganglioneuromas are generally considered to be the mature form of a triad of tumors arising from neural crest tissue which include malignant neuroblastoma and ganglioneuroblastoma. We report one case of retroperitoneal non-adrenal ganglioneuroma with review of literature.
Adrenal Glands ; Ganglioneuroblastoma ; Ganglioneuroma* ; Neural Crest ; Neuroblastoma ; Physical Examination