Objectives: The salivary gland tumor shows heterogeneity in histologic patterns and biological behavior. The aim of this study is to elucidate the relationships between apoptosis and expressions of apoptosis-related factors(bcl-2, bax, M30), p53 and MIB-1 in the salivary gland tumors. Methods: Immunohistochemical stains for apoptosis-related factors, p53 and MIB-1 and TUNEL study for apoptosis were performed in 46 cases of salivary gland tumors 02 benign and 34 malignant). Results: Twenty(43.5%) of 46 cases showed positive reaction for apoptosis, and the expression rates of bcl-2, bax, M30, p53 and MIB-1 were 85.3%, 68.8%, 65.9%, 39.1% and 26.1%, respectively. A significant difference between benign and malignant tumors was only noted in MIB-1 expression(p=0.0167). In malignant tumors, apoptosis showed no significant relationships to expressions of apoptosis-related factors. There were inverse relationships between p53 and bcl-2 expression(p=0.0375), and between M30 and MIB-1 expressions(p=0.0379). No significant differences of apoptosis, bcl-2, bax, M30, p53 and MIB-1 expression rates according to the tumor size, lymph node status, recurrence and survival were found. Conclusion: In the development of benign and malignant salivary gland tumors, apoptosis might be associated, however, apoptosis and expressions of apoptosis-related factors seemed to be not reliable prognostic factors in malignant salivary gland tumors.
Objective : To investigate the relation to the organs, shu points and mu points. The labeled common locations of the spinal cord and brain were observed following injection of pseudorabies virus(PRV) into the the kidney, UB23 and GB25. Methods : After survival times of 96 hours following injection of PRV, The fifteen rats were perfused, and their spinal cord and brain were frozen sectioned($30{\mu}m$). These sections were stained by PRV immunohistochemical staining method, and observed with light microscope. Results : In spinal cord, PRV labeled neurons projecting to the kidney, BL23 and GB25 were founded in cervical, thoracic, lumbar and sacral spinal segments. Dense labeled areas of cervical segments were overlap in lateral cervical n. and lamina III-V area. Thoracic segments were overlap in lateral spinal n., intermediolateral n. and lamina V-X areas. Lumbar segments were overlap in lamina I-V areas. Sacral segments were overlap in lamina IV, V and X areas. In brain, PRV labeled areas projecting to the kidney, UB23 and GB25 were overlap in the A1 noradrenalin cells/C1 adrenalin cells/caudoventrolateral reticular n./rostroventrolaterai n., raphe obscurus n,, raphe pallidus n., raphe magnus n., gigantocellular reticular n., locus coeruleus, subcoeruleus n., A5 cell group and paraventricular hypothalamic n.. Conclusions : This results suggest that PRV labeled overlap areas of projecting to the kidney may be correlated to shu and mu points related to the kidney. These morphological results provide that organs-shu(transport) and mu(alarm) points interrelationship may be related to the central autonomic pathways.
Purpose: Among cell adhesion molecules, serum levels of intercellular adhesion molecule-1 and E-selectin are known to be correlated with the metastatic potential of gastric cancer. In the present study, the authors investigated the expression of intercellular adhesion molecule-1 and E-selectin in gastric cancer tissues and cultured gastric cancer cells, and examined their clinical value in gastric cancer. Materials and Methods: The protein was extracted from gastric cancer tissues and cultured gastric cancer cells (MKN-28 and Kato-III) and the expression of intercellular adhesion molecule-1 and E-selectin was examined by western blotting. The clinical significance of intercellular adhesion molecule-1 and E-selectin was explored, using immunohistochemical staining of specimens from 157 gastric cancer patients. Results: In western blot analysis, the expressions of intercellular adhesion molecule-1 in gastric cancer tissues and cultured gastric cancer cells were increased, however, E-selectin in gastric cancer tissues and cells were not increased. Among 157 gastric cancer patients, 79 patients (50%) were intercellular adhesion molecule-1 positive and had larger tumor size, an increased depth of tumor invasion, lymph node metastasis and perineural invasion. The intercellular adhesion molecule-1 positive group showed a higher incidence of tumor recurrence (40.5%), and a poorer 3-year survival than the negative group (54.9 vs. 85.9%, respectively). Conclusions: Intercellular adhesion molecule-1 is overexpressed in gastric cancer tissues and cultured gastric cancer cells, whereas E-selectin is not overexpressed. Increased expression of intercellular adhesion molecule-1 in gastric cancer could be related to the aggressive nature of the tumor, and has a poor prognostic effect on gastric cancer.
Park, Won-Young;Shin, Dong-Hoon;Kim, Jae-Ho;Lee, Min-Ki;Lee, Ho-Seok;Lee, Chang-Hun
Tuberculosis and Respiratory Diseases
/
v.72
no.2
/
pp.132-139
/
2012
Background: Periostin is preferentially expressed in periosteum, indicating a potential role in bone formation. Recently, there have been emerging controversies about its role in invasion and metastasis of human malignancies. We attempted to determine the clinicopathological significance of periostin expression in non-small cell lung carcinoma (NSCLC). Methods: Immunohistochemical staining of periostin protein from 91 cases of NSCLCs was performed using tissue microarray blocks. The results were correlated with clinicopathological parameters. Results: Positive reaction to periostin was predominantly noted in the tumor stroma. The strongest reaction presented as a band-like pattern just around the tumor nests. Non-neoplastic lung tissue and most in-situ carcinomas did not show a positive reaction in their stroma. With respect to tumor differentiation, moderate to poor differentiated tumors (47/77) revealed even higher periostin expression than the well-differentiated ones (4/14) (p=0.024). High periostin expression was positively correlated with E-cadherin and p53 expression, but was not related with patient age, sex, tumor type, PCNA index, b-catenin, cyclin D1, pTNM-T, pTNM-N, stage, and patient survival (p>0.05). Conclusion: These results suggest that periostin might play a role during the biological progression of NSCLC, but may not be related to the clinical prognostic parameters.
Jo, Mee-Hyeong;Ahn, Chang-Beohm;Song, Choon-Ho;Yoon, Hyoun-Min;Kim, Cheol-Hong;Jang, Kyung-Jeon
Korean Journal of Acupuncture
/
v.21
no.4
/
pp.101-115
/
2004
Objective : The present studies investigated the effects of 120 Hz high frequency electroacupuncture (EA) on the stress-induced stomach dysfunction in relation to its effect on the level of stress hormones and gastric mucosal damages. The gastric mucosal injury was induced by cold-restraint stress and two acupoints corresponding to Zusanli and Sanyinjiao in man were used. Methods : Cold-restraint stress produced typical gastric lesions in all rats of the stressed groups, but the number of ulcers as well as the mean ulcer diameter were reduced by 120 Hz EA pre-treatment. Results : The degranulation value of gastric mast cell was significantly higher in cold-restrained rats than in control ones. However, with the significant reduction of degranulation values of gastric mast cells in EA pre-treated rats compared with cold-restrained rats. Cold-restarint stress induced an elevated mRNA expression of pro-inflammatory gene such as cyclooxygenases-2 and tumor necrosis factor $(TNF)-{\alpha}$, but these expression were down-regulated in EA pre-treated rats. Immunohistochemical analysis showed that while the $inhibitory-{\kappa}B{\alpha}$ and $TNF-{\alpha}$ immunorection in the surface epithelium of the stomach tended to increase, both reactions in the EA pre-treated rats showed similar pattern as observed in controls. Conclusion : These results suggest that 120 Hz EA may act as a therapeutical means for gastric mucosal damages through an activation of pituitary adrenal system. It could be concluded that 120 Hz high frequency electroaucupuncture affords a good protective potential against stress-induced gastrointestinal dysfunction.
Yahi, Dauda;Ojo, Nicholas Adetayo;Mshelia, Gideon Dauda
Journal of Animal Science and Technology
/
v.59
no.5
/
pp.12.1-12.7
/
2017
Background: Despite the widespread use of dexamethasone in veterinary and human medicine, it is reported to cause some severe pregnancy related side effects like abortion in some animals. The mechanism of the response is not clear but seems to be related to interspecies and/or breed difference in response which may involve alterations in the concentrations of some reproductive hormones. Methods: Twenty Sahel goats comprising 18 does and 2 bucks were used for this study. Pregnancies were achieved by natural mating after synchronization. Repeated dexamethasone injections were given at 0.25 mg/kg body weight. Blood samples were collected biweekly for hormonal assay. Uterine biopsies were harvested at days 28 and day 78 of gestation through caesarean section for immunohistochemical analysis using 3 pregnant does randomly selected from each group at each instant. Data were expressed as Means ${\pm}$ Standard Deviations and analyzed using statistical soft ware package, GraphPad Instant, version 3.0 (2003) and progesterone receptor (PR) were scored semi-quantitatively. Results: Dexamethasone treatments had no significant (p > 0.05) effect on progesterone and estrogen concentrations in pregnant Sahel goats but up regulated PR from 2+ to 3+ in second trimester. Conclusion: As dexamethasone adverse effect on placenta is an established fact, the lack of effect on progesterone level in this study may be due to the fact that unlike other species whose progesterone production during pregnancy is placenta - dependent, in goats is corpus luteum - dependent. Consequently dexamethasone adverse effect on placenta reported in literatures did not influence progesterone levels during pregnancy in Sahel goat. The up regulation of progesterone receptor (PR) in Sahel goat gravid uterus is a beneficial effects and that dexamethasone can safely be used in corpus luteum - dependent progesterone secreting pregnant animal species like Sahel goat and camel. Therefore source of progesterone secretions during pregnancy should be considered in clinical application of dexamethasone in pregnancy.
Kim, Hyun;Matsuwaki, Takashi;Yamanouchi, Keitaro;Nishihara, Masugi;Yang, Boh-Suk;Ko, Yeoung-Gyu;Kim, Sung-Woo
Journal of Embryo Transfer
/
v.26
no.4
/
pp.229-235
/
2011
Sloan-Kettering virus gene product of a cellular protooncogene c-Ski is an unique nuclear pro-oncoprotein and belongs to the Ski/Sno proto-oncogene family. Ski plays multiple roles in a variety of cell types, it can induce both oncogenic transformation and terminal muscle differentiation when expressed at high levels. Ski protein is implicated in proliferation/differentiation in a variety of cells. The alternative fate of granulosa cells other than apoptosis is to differentiate to luteal cells, however, it is unknown whether Ski is expressed and has a role in granulosa cells undergoing luteinization. Thus, the aim of this study was, by means of immunohistochemical methods, to locate Ski protein in the rat ovaries during ovulation and corpora lutea (CL) formation to predict the possible involvement of Ski in luteinization. In addition, we performed to examine whether the initiation of luteinization with luteinizing hormone (LH) directly regulates expression of Ski in the luteinized granulosa and luteal cells after ovulation by in vivo models. In order to examine the expression pattern of Ski protein along with the progress of luteinization, follicular growth was induced by administration of equine chorionic gonadtropin to immature female rat, and luteinization was induced by human chorionic gonadtropin treatment to mimic luteinizing hormone (LH) surge. While no Ski-positive granulosa cells were present in preovulatory follicle, Ski protein expression was induced in response to LH surge, and was maintained after the formation of corpus luteum (CL). These results indicate that Ski is profoundly expressed in the luteinized granulosa cells and luteal cells of CL during luteinization, and suggest that Ski may play a role in luteinization of granulosa cells.
Mutant form of the p53 gene product is abnormally accumulated in the nuclei of the tumor cells due to prolonged half life, and readily detected by immunohistochemical methods. To determine the positivity rate of p53 in body cavity fluid according the primary site and histological types of tumors and the utility of p53 immunostaining as an adjunct in the diagnosis of malignancy, we reviewed 69 effusions, including pleural effusion, ascitic fluid, and pericardial fluid, that were diagnosed as overt malignancy and 21 effusions of suspicious malignancy, immunohistochemistry was performed on paraffin-embedded cell blocks using a monoclonal antibody to p53 supressor gene product(Clone DO7) and a standard avidin-biotin complex technique with a citrate buffer antigen retrieval solution. The results were as follows; of the 46 pleural effusions with overt malignancy, 22 were immunopositive for p53 protein; of the 21 ascitic fluids with overt malignancy, 5 were positive for p53. Positivity rates according to the primary sites of tumors were 18 of 34(52.9%), 8 of 21(38.1%), 1 of 9(11.1%) cases of the tumors of the lung, GI tract, and ovary, respectively. According to the histologic types of lung cancer, 11 cases(61.6%) were positive out of 18 adenocarcinomas, 2 of 5 large cell undifferentiated carcinomas, and 1 of 2 small cell undifferentiated carcinomas. Of 21 cases of suspicious malignancy, 6 were positive for p53 and all of them(6/6) were confirmed as adenocarcinoma of the lung or GI tract. These findings indicate that p53 immunostaining using paraffin embedded cell block is useful diagnostic and prognostic marker in body fluid cytology although negative immunostaining does not exclude malignancy.
Objective : This study was designed to identify lipid protection formation in stratum corneum and anti-inflammatory effects of Sopungdojeok-tang(SD) on atopic dermatitis(AD). Materials and Methods : In Vivo, SD extract was orally administered to BALB/c mice at $2.5m{\ell}/kg/day$ for 2 days after 5% sodium dodecyl sulfate evoked atopic dermatitis in abdominal skin. Morphological changes were observed by immunohistochemical stain using monoclonal antibodies(BrdU, ceramide, MIP-2, $NF-{\kappa}B$ p50, IL-4, and STAT6) and TUNEL method. In vitro, the alterations of IL-4 mRNA expression were detected by RT-PCT in SD extract treated EL4 cells after phorbol-12-myristate-13-acetate and 4-tert-Octylphenol induce Th2 skewed condition. Results : SD is used in Oriental Medicine for its potential curative for atopic dermatitis. In this study, we have investigated the anti-inflammatory and lipid lamella repair effects of SD were investigated. SD decreased the number of eosinophil in atopic dermatitis induced mice. In the histological properties, the hyperplasia, edema, infiltration of lymphocytes, damage of intercellular space of stratum corneum, BrdU positive reacted cells in stratum basal, and degranulated mast cells and capillaries in dermal papillae decreased in mice with SD. Treatment of SD also decreased MIP-2, STAT6 and IL-4 in dermal papillae. The IL-4 mRNA expression decreased in a dose-dependant manner in SD treated EL4 cells. In addition, decrease of $NF-{\kappa}B$ p50 and increase of apoptotic cells in dermis were observed in SD treated mice. These data suggest that SD may beneficial for atopic dermatitis. Conclusions : These data suggest that SD is beneficial in treatment of atopic dermatitis, and that SD provides lipid protection in stratum corneum and anti-inflammatory effects on atopic dermatitis.
Kim, Bang-Oul;Kim, Kyoung-Sun;Jeon, Hong-Yeol;Kang, Hwa-Jeong;Kim, Jeong-Sang;Hong, Seok;Kim, Yong-Jin
The Journal of Internal Korean Medicine
/
v.23
no.2
/
pp.191-201
/
2002
Objectives : This study was designed to investigate the effects of Yukmijihwang-tang on contusion of the mice induced with medicine. Methods : I observed the effects of light and electron microscopes. and examined hematological changes and VEGF-immunohistochemistry. Results : Hematology: Leukocytes were increased significantly in a control group of mice compared with the experimental group. Light microscope : A few neurons were condensed in the 7-day experimental group, but condensed remarkedly in the 3-day control group. Most glial cells were observed in the 3-day experimental group. Edema and dilatation of vessels occurred significantly in the 3-day control group, and these results occurred weakly in the 7-day experimental group. VEGF-immunohistochemistry : VEGF-immunohistochemical reactivity for the glial cells was the highest in the 3-day experimental group, and immunoreactivity for the vessels and neurons highly increased in the 7-day experimental group. Electron microscope : In the 3-day control group, protoplasmic astrocytes concerned with angiogenesis contained weakly developed rough endoplasmic reticulum. and a few of glial filaments were observed. In the 7-day experimental group, the bundles of glial filaments were found in the cytoplasmic process of astrocytes. Conclusion : medication using Yukmijihwang-tang of mice contused by medical stress is highly effective in inflamatory response, curing cell damage and angiogenesis.
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