• Journal of Microbiology and Biotechnology
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• 제32권3호
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• pp.348-354
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• 2022

Recent studies have shown that probiotics have health-promoting effects, particularly intestinal immune modulation. In this study, we focused on the immunomodulatory properties of Latilactobacillus curvatus BYB3, formerly called Lactobacillus curvatus, isolated from kimchi. In a mouse model of 14-day dextran sulfate sodium (DSS)-induced colitis, treatment with L. curvatus BYB3 significantly decreased the disease activity index, colon length, and weight loss. Moreover, histological analyses showed that L. curvatus BYB3 protected the structural integrity of the intestinal epithelial layer and mucin-secreting goblet cells from DSS-induced damage, with only slight infiltration by immune cells. To evaluate the molecular mechanisms underlying L. curvatus BYB3-driven inhibition of interleukin 6 production, possible in vivo anti-inflammatory effects of L. curvatus BYB3 were examined in the same mouse model. In addition, significantly lower levels of IL-6 and tumor necrosis factor receptor 1 upregulation were seen in the DSS+BYB3 group (compared to that in the DSS group). These results indicate that L. curvatus BYB3 exhibits health-promoting effects via immune modulation; and therefore, it can be used to treat various inflammatory diseases.

• 한국어류학회지
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• 제19권1호
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• pp.16-23
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• 2007

한국산 버들치속 (Rhynchocypris) 어류인 버들치 (Rhynchocypris oxycephalus)와 금강모치 (Rhynchocypris kumgangensis) 난모세포의 난막구조에 대해 광학현미경과 전자현미경으로 조사하였다. 두 종에 있어서 난형성과정은 비슷했으나 난모세포를 둘러싸는 여포세포층(follicular layer)에 있어서는 차이를 보였다. 버들치는 난황포(yolk vesicle)시기에 있어 여포세포층은 안쪽에 입방형 또는 둥근모양의 세포층(inner follicular layer)이 난막위에 형성되고 그 바깥쪽으로 편평세포층(outer follicular layer)의 2층으로 이루어져 있었다. 난모세포의 발생이 진행됨에 따라 inner follicular layer의 입방형세포는 원주형세포(columnar cell)로 바뀌게 된다. 난황구(yolk granule)시기에 원주형세포는 세포질에 부착물질인 mucin을 분비해서 난세포 전체를 둘러싸게 된다. 반면에 금강모치의 경우 버들치와 마찬가지로 난황포시기에 안층의 입방형 또는 둥근모양의 세포층과 바깥층의 편평세포층을 가지게 되지만 안층의 세포는 더 이상 변화를 보이지 않았으며, 부착물질 또한 형성되지 않았다. 이처럼 한국산 버들치속에 있어 난막의 구조적 차이는 두 종간에 뚜렷한 분류형질로도 이용될 수 있을 뿐 아니라 그들의 서식처 및 산란습성과도 연관이 있는 것으로 생각된다.

• Tuberculosis and Respiratory Diseases
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• 제57권6호
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• pp.594-598
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• 2004

원발성 반지세포 폐암종은 점액을 분비하는 독특한 선암의 일종으로 매우 드물게 발생한다. 예후가 불량하므로 타 원발성 및 전이성 폐암종과 감별이 필요하고 임상적인 검사로 원발병소를 찾기가 어려울 경우 조직면역학적 방법이 감별에 도움이 된다. 본 저자들은 다발전 골전이를 동반한 진행된 원발성 반지세포 폐암종의 증례를 문헌고찰과 함께 보고하는 바이다.

• Asian Pacific Journal of Cancer Prevention
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• 제14권5호
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• pp.2765-2769
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• 2013

Background: A close association between patterns identified by magnifying narrow-band imaging (M-NBI) and histological type has been described. M-NBI patterns were also recently reported to be related to the mucin phenotype; however, detials remain unclear. Materials and Methods: We investigated the cellular differentiation of gastric cancer lesions, along with their mucosal distribution observed by M-NBI. Ninety-seven depressed-type early gastric cancer lesions (74 differentiated and 23 undifferentiated adenocarcinomas) were visualized by M-NBI. Findings were divided into 4 patterns based on abnormal microvascular architecture: a chain loop pattern (CLP), a fine network pattern (FNP), a corkscrew pattern (CSP), and an unclassified pattern. Mucin phenotypes were judged as gastric (G-type), intestinal (I-type), mixed gastric and intestinal (M-type), and null (N-type) based on 4 markers (MAC5AC, MUC6, MUC2, and CD10). The relationship of each pattern of microvascular architecture with organoid differentiation indicated by cancer cell differentiation and its distribution in each histological type of early gastric cancer was investigated. Results: All CLP and FNP lesions were differentiated. The cancer cell distribution showed organoid differentiation in 84.2% (16/19) and 61.1% (22/36) of the two types of lesions, respectively, and there was a significant difference from the unclassified pattern with organoid differentiation (p<0.001). Almost all (94.7%; 18/19) CSP lesions were undifferentiated, and organoid differentiation was observed in 72.2% (13/18). There was a significant difference from the unclassified pattern with organoid differentiation (p<0.05). Conclusions: Cellular differentiation and distribution are associated with microvascular architecture observed by M-NBI.

• Journal of Oral Medicine and Pain
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• 제24권2호
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• pp.125-135
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• 1999

This study was performed to discover the underlining influences of Herpes Simplex virus (HSV) and Varicella Zoster virus (VZV), to detect the changes of whole protein and mucin level and to observe protein profiles in the saliva when recurrent aphthous ulcer (RAU) was present. Unstimulated whole saliva was collected from 23 patients who for over three years had a clinical history of RAU, in a group of 10 women and 13 men, ranging from 11 to 72 years of age, and 20 healthy subjects, in a group of 8 women and 12 men, who did not have the symptoms nor a past history of RAU. Through the means of Polymerization Chain Reaction, genomic DNA from the HSV and VZV was purified from the saliva samples for identifying precisely the two types of viruses, and the level of whole protein and sialic acids in the saliva and the ratio of sialic acid to whole protein were measured, and SDS-polyacrylamide gel electrophoresis was performed. The results obtained were as follows ; 1. 39.13% of patients showed 224 bp bands of VZV DNA, those were appeared more in patients than in control group (p<0.01), but there was no significant difference between patients and control group in HSV DNA (p>0.05). 2. The concentration of whole protein in men patients was lower than in men control group (p<0.05), but there were no significant differences between patients and control in other groups (p>0.05). 3. The concentration of sialic acids from patients was lower than control group in all groups (p<0.05). 4. The concentration of sialic acids in proportion to that of whole protein was lower in patients than in control group (p<0.05), and in the two women groups (p<0.01), but no noticeable difference was found between the two men groups (p>0.05). 5. There were no consistent differences observed in the protein profiles of patients with control group except that certain protein bands near 50 kDa was lower in patients than in control group. These results suggest that viruses such as HSV and VZV and reduction of salivary whole protein and mucin levels are related to development of RAU.

• Asian Pacific Journal of Cancer Prevention
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• 제13권4호
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• pp.1569-1573
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• 2012

Luteolin (LUT), a bioflavonoid has been used as a chemopreventive agent world-wide against chemically induced cancer. Hence we designed an experiment to assess chemopreventive action of LUT on lipid peroxidation (LPO) and glycoconjugates in azoxymethane (AOM)-induced colon carcinogenesis. Colon cancer was induced by 15 mg/body kg. body weight of AOM and administration of LUT (at the dose of 1.2 mg/kg. body weight) was till end of the study. Analysis of lipid peroxidative end products such as protein carbonyl (PC), malonadehyde (MDA) and conjucated dienes (CD) demonstrated significant increase in in AOM-induced animals with reduction by LUT (p<0.05). Increased levels of glycoconjugates such as hexose, hexosamine, sialic acid, fucose and mucoprotein were analyzed in serum and colon tissues examined histopathologically by periodic acid Schiff's (PAS) staining were also reversed by LUT l(p<0.05). The secondary marker of colon cancer mucin depleted foci (MDF) was assessed in control and experimental group of animals. A characteristic increase of MDF was observed in AOM-induced colon cancer animals. Treatment with LUT decreased the incidence of MDF. These results suggest that LUT alters the expression of glycoconjugates and suppress colon cancer. Hence, we speculate that LUT can be used as a chemopreventive agent to treat colon cancer.

• Journal of Applied Biological Chemistry
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• 제61권3호
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• pp.233-238
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• 2018

Chitinases are glycosyl hydrolases which cleave the ${\beta}$-1,4 linkage of chitin into oligo or monomers of N-acetylglucosamine. These bacterial enzymes have been used for a wide range of applications in the food and pharmaceutical industries. In this study, we isolated two potential chitinolytic strains, BAO-01 and BAO-02, from salt-fermented shrimp, which were shown to belong to the genus Salinivibrio through genetic characterization using 16S rRNA. These isolates were gram-positive, rod-shaped, and non-spore forming. BAO-01 showed greater growth and chitinase activity than BAO-02 after the incubation at $37^{\circ}C$ for 4 days. Both strains grew on a wide range of carbon and nitrogen sources, pH values, temperatures, and salt levels. However, they showed minor biochemical differences. In addition, their antimicrobial activities against foodborne pathogens and antibiotic susceptibilities were evaluated. These Salinivibrio spp. did not show bioamine production, hemolytic activity, and mucin degradation. Therefore, the in vitro screening results suggested that these bacteria could be widely used as new candidates for chitin hydrolyzation and seafood fermentation.

• Archives of Plastic Surgery
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• 제34권4호
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• pp.501-503
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• 2007

Purpose: The authors report unusual one case of a patient presenting with maxillary sinus mucocele who had underwent Lefort I procedure 7 years ago. Methods: Case report and literature review Results: A 25 year old man came to us with fullness, pain and nasal obstruction on his left cheek area. He had a history of multiple operations due to cleft lip and palate since birth. Two jaw surgery was performed for correcting class III malocclusion 7 years ago. Computed tomography showed haziness, and fluid filled cystic mass on left maxillary sinus. Nasoendoscopy revealed the bulging of inferior turbinate and mucosa coincided in medial wall of maxillary sinus. Antrostomy with Caldwell-Luc approach was performed. Mucin contaning brownish exudate was leaked out. Severe inflammation of maxillary inner wall and exposure of 2 screws fixed previously were noticed. The curettage and marsupialization were accomplished. The symptoms of patient were improved after that procedure. Conclusion: Maxillary sinus mucocele is related with Lefort I procedure and it may occur even long after that procedure.

• Biomolecules & Therapeutics
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• 제29권4호
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• pp.427-433
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• 2021

Free fatty acid receptor 2 (FFA2, also known as GPR43), a G-protein-coupled receptor, has been known to recognize short-chain fatty acids and regulate inflammatory responses. FFA2 gene deficiency exacerbated disease states in several models of inflammatory conditions including asthma. However, in vivo efficacy of FFA2 agonists has not been tested in allergic asthma. Thus, we investigated effect of 4-chloro-α-(1-methylethyl)-N-2-thiazoylylbenzeneacetanilide (4-CMTB), a FFA2 agonist, on antigen-induced degranulation in RBL-2H3 cells and ovalbumin-induced allergic asthma in BALB/c mice. Treatment of 4-CMTB inhibited the antigen-induced degranulation concentration-dependently. Administration of 4-CMTB decreased the immune cell numbers in the bronchoalveolar lavage fluid and suppressed the expression of inflammatory Th2 cytokines (IL-4, IL-5, and IL-13) in the lung tissues. Histological studies revealed that 4-CMTB suppressed mucin production and inflammation in the lungs. Thus, results proved that FFA2 functions to suppress allergic asthma, suggesting 4-CMTB activation of FFA2 as a therapeutic tool for allergic asthma.

• Clinical Endoscopy
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• 제56권1호
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• pp.114-118
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• 2023

Gastric wall abscess, a localized form of phlegmonous gastritis, is a rare complication of endoscopic resection. We report the first case of gastric wall abscess developing after endoscopic submucosal dissection in Korea. A 72-year-old woman visited our clinic to receive treatment for gastric adenoma. The patient successfully underwent endoscopic submucosal dissection with no complications. The final diagnosis was well-differentiated tubular adenocarcinoma. We performed follow-up endoscopy 10 weeks later and found a large subepithelial lesion on the posterior wall of the gastric antrum. Abdominal computed tomography revealed hypodense wall thickening and a 5 cm heterogenous multilobular mass in the submucosal layer of the gastric antrum. Submucosal invasion with mucin-producing adenocarcinomas could therefore not be excluded. The patient agreed to undergo additional gastrectomy due to the possibility of a highly malignant lesion. The final diagnosis was acute suppurative inflammation with the formation of multiple abscesses in the mural layers and omentum. The patient was discharged with no complications.