• 제목/요약/키워드: Salivary gland

검색결과 605건 처리시간 0.032초

구속 스트레스에 의한 타액선 조직내의 Clusterin 발현 (Expression of Clusterin in the Salivary Gland under Restraint Stress)

  • 박희경;전양현;홍정표;어규식
    • Journal of Oral Medicine and Pain
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    • 제33권3호
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    • pp.247-256
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    • 2008
  • 일상생활에서 우리는 항상 스트레스에 노출되어 있으며, 스트레스에 대한 반응은 우리 삶의 질과 건강에 중요한 영향을 미친다. 특히 정서적으로 중요한 구강안면영역에도 다양한 스트레스성 질환이 존재한다. 그러나 스트레스와 질병에 관한 오랜 연구에도 불구하고 스트레스성 구강안면질환의 병인은 아직 명확하지 않다. 이에 저자는 최근 임상의학에서 관심이 집중되어지고 있는 스트레스와 질병에 대한 분자생물학적 접근의 일환으로 스트레스성 구강안면질환의 병인을 규명하고자 본 연구에 임하였다. 즉, 스트레스 단백질로 알려진 clusterin이 스트레스의 생리적 반응으로서 세포보호작용 결과 발현된다는 사실에 기초하여, 스트레스 부여 후 타액선 조직 내에서의 그 발현변화를 추적하였다. Sprague-Dawley계 웅성 백서(200-230g/bw)를 구속 스트레스 부여군(구속장치에 구속한 후 0, 3, 5일에 희생) 및 정상군으로 나누고, 각각 악하선을 적출하였으며, 면역조직화학법 및 Northern Blot을 이용하여 Clusterin의 변화를 관찰하였다. 그 결과는 다음과 같다. 1. 구속 스트레스 부여군의 clusterin 단백질은 실험 즉일군에서 증가되었고, 그 이후에는 감소되었다. 2. 구속 스트레스 부여 3일군과 5일군에서 핵붕괴 및 핵농축 등의 핵변화를 동반한 apoptosis가 유도되었다. 3. 구속 스트레스 부여 결과, 선포세포가 도관세포보다 일찍 세포사하였다. 4. 구속 스트레스 부여군의 clusterin mRNA는 실험 즉일군에서만 미약하게 관찰되었다. 즉, 타액선 조직은 스트레스 단백질인 clusterin을 생산하여 세포를 보호함으로써 스트레스 상황에 적응하지만, 생리적 적응한계를 넘는 스트레스에 노출될 때에는 조직이 apoptosis됨이 확인되었다. 따라서, 본 연구결과는 구강건조증등 스트레스성 타액선관련 증상 및 질환의 병리적 기전에 대한 규명에 도움이 되리라고 생각하며, 또한 clusterin은 향후 생체에 가해진 스트레스에 대한 표식자(marker)로 사용될 수 있을 것으로 사료된다.

기관지 선종의 외과적 치료[17례 보고] (Surgical Treatment of Bronchial Adenoma - Reports of 17 Cases -)

  • 문석환
    • Journal of Chest Surgery
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    • 제25권3호
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    • pp.247-257
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    • 1992
  • Bronchial adenoma, firstly described by Muller[1882] had been reported on the subject stressed their benign nature prior to 1940`s, but these tumors including carcinoid tumor, mucoepidermoid carcinoma, adenoid cystic carcinoma, pleomorphic adenoma are now known to possess the various degree of malignant natures from benign course, low grade malignant potential to distant lymphatic or hematogenous metastasis or combination. Although histologically diffeerent, four varieties except carcinoid tumor which is a spectrum of neu-roendocrine tumor originating Kulchitsky cell of the bronchial epithelium and form the part of the APUD tumor spectrum, are morphologically and in many respects clinically similar to the corresponding tumor of the salivary gland is a specific varient of adenocarcinoma that occurs most commonly in the major and minor salivary gland and less frequently tra-cheobronchial tree, esophagus etc. To better understand the clinical characteristics and assess more precisely the malignat nature of bronchial adenoma, we studied 17 cases of bronchial adenoma, which had been experienced at the Department of Thoracic and Cardiovascular surgery of Catholic University Medical College from April 1977 to september 1991. Seventeen cases of bronchial adenoma consist of 2 carcinoid tumors, 6 adenoid cystic carcinomas, 8 mucoepidermoid carcinomas and one pleomorphic adenoma. There is a slight predominace of male patients[10/17] and the age of pt studied varied with a higher incidence occurring between the ages of 40 years and 60 years[mean age, 46.5 years]; the youngest being 15 years and oldest 69 years. Their leading complaints were hemoptysis[4], exertional dyspnea[8], fever & chilness [4], and symptoms mimicking the bronchial asthma[4]. Diagnosis was aided by the radiologic studies such as chest X-ray, polytomography, CT scan, brochography and bronchoscopy. The preferred locations of fumor were in the trachea[4], main stem bronchus[3], bronchus intermedius[3], bronchus of RUL[2], LUL[1], RLL[1], LLL[3] with no peripheral location. Modalities of treatments were single or combination of surgical resection, radiation therapy, chemotherapy. Complete resections were permitted in 12 cases with late recurrences of 4 cases ranging from 6 months to 10 years: pneumonectomy[4], lobectomy[4], bil-obectomy[2], sleeve resection[2]. Gross findings of resected specimens in 14 cases showed that 4 cases were polyp-like pedunculated mass[entirely intraluminal mass] with intact mucosa, 8 cases were broad-bas-ed sessile mass[predominatly intraluminal] and the main portions were located below the mucosa similar to tip of iceburg[predominantly extraluminal] in 2 cases. Follow-up information was availble in all 17 cases ; eight were alive without evidence of disese ranging from 1 month to 13 years. But seven cases died of the causes related to tumor[6 cases within 12 months, one case 10 years after pneumonectomy]. We concluded that 8 cases[47%] of 17 cases were metastasizing bronchial adenoma and precise survival rate cannot be answered by the scanty materials available for study.

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Relative Frequency of Oral Malignancies and Oral Precancer in the Biopsy Service of Jazan Province, 2009-2014

  • Idris, AM;Vani, NV;Saleh, Sanna;Tubaigy, Faisal;Alharbi, Fahd;Sharwani, Abubkr;Tadrus, Nabil;Warnakulasuriya, Saman
    • Asian Pacific Journal of Cancer Prevention
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    • 제17권2호
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    • pp.519-525
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    • 2016
  • Background: The objective of this study was to report the types and relative frequency of oral malignancies and precancer in the Jazan region of Saudi Arabia during the period 2009-2014. Materials and Methods: Pathology reports were retrieved from the archives of Histopathology Department, King Fahd hospital in Jazan. Demographic data on tobacco habits, clinical presentation and histologic grading of oral precancer and cancer cases were transcribed from the files. Results: 303 (42.7%) oral pre-malignant and malignant cases were found out of 714 oral biopsy lesions. A pathology diagnosis of squamous cell carcinoma (85.1%) was most frequent, followed by premalignant lesions/epithelial dysplasia (8.6%), verrucous carcinoma (3.3%) and malignancy of other histological types (3%) such as ameloblastic carcinoma, salivary gland malignancy and sarcomas. Oral squamous cell carcinoma was predominant in females with a male to female ratio of 1:1.9. Patient age ranged from 22 to 100 years with a mean of $65{\pm}13.9$. Almost 44.6% of oral cancer had occurred after 65 years of age. Only 16.3% cases were reported in patients younger than 50 years, predominantly females. The majority of female patients had the habit of using shammah with a long duration of usage for more than 45 years. Buccoalveolar mucosa (52.3%) was the common site of involvement followed by tongue/floor of the mouth (47.7%) and clinically presented mostly as ulceration/swelling clinically. Moderately differentiated tumours (53.9%) were common followed by well differentiated (32.2%) and poorly differentiated tumours (5.8%). The prevalence of oral verrucous carcinoma (3.3%) was comparatively low with an equal distribution in both males and females. Both bucco-alveolar mucosa and tongue were predominantly affected. Oral precancer/epithelial dysplasia (8.6%) was common in females with a shammah habit. Bucco-alveolar mucosa was commonly involved and clinically presented mostly as white/red patches. Most cases were mild followed by moderate and severe dysplasia. Tumours of other histological types (3%) include 1 ameloblastic carcinoma, 3 malignant salivary gland tumours and 5 sarcomas. Conclusions: In this study, it was found that oral cancers reported in the pathology service to be a common occurrence. This study reconfirms previous reports of the high burden of oral cancer in this population This indicates that conventional preventive programs focused on oral cancer are in need of revision. In addition, further research into identifying new risk factors and molecular markers for oral cancer are needed for screening high risk individuals.

DA-6034 Induces $[Ca^{2+}]_i$ Increase in Epithelial Cells

  • Yang, Yu-Mi;Park, Soonhong;Ji, HyeWon;Kim, Tae-Im;Kim, Eung Kweon;Kang, Kyung Koo;Shin, Dong Min
    • The Korean Journal of Physiology and Pharmacology
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    • 제18권2호
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    • pp.89-94
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    • 2014
  • DA-6034, a eupatilin derivative of flavonoid, has shown potent effects on the protection of gastric mucosa and induced the increases in fluid and glycoprotein secretion in human and rat corneal and conjunctival cells, suggesting that it might be considered as a drug for the treatment of dry eye. However, whether DA-6034 induces $Ca^{2+}$ signaling and its underlying mechanism in epithelial cells are not known. In the present study, we investigated the mechanism for actions of DA-6034 in $Ca^{2+}$ signaling pathways of the epithelial cells (conjunctival and corneal cells) from human donor eyes and mouse salivary gland epithelial cells. DA-6034 activated $Ca^{2+}$-activated $Cl^-$ channels (CaCCs) and increased intracellular calcium concentrations ($[Ca^{2+}]_i$) in primary cultured human conjunctival cells. DA-6034 also increased $[Ca^{2+}]_i$ in mouse salivary gland cells and human corneal epithelial cells. $[Ca^{2+}]_i$ increase of DA-6034 was dependent on the $Ca^{2+}$ entry from extracellular and $Ca^{2+}$ release from internal $Ca^{2+}$ stores. Interestingly, these effects of DA-6034 were related to ryanodine receptors (RyRs) but not phospholipase C/inositol 1,4,5-triphosphate ($IP_3$) pathway and lysosomal $Ca^{2+}$ stores. These results suggest that DA-6034 induces $Ca^{2+}$ signaling via extracellular $Ca^{2+}$ entry and RyRs-sensitive $Ca^{2+}$ release from internal $Ca^{2+}$ stores in epithelial cells.

타액 연구의 최신 지견과 임상 응용 (Trends in Saliva Research and Biomedical Clinical Applications )

  • 박소영;이은경;신종현;정태성
    • 대한소아치과학회지
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    • 제50권1호
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    • pp.1-12
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    • 2023
  • 타액선의 기능과 타액의 구성성분은 개체의 건강 상태를 반영하는 지표가 될 수 있다. 타액에서 바이러스와 미생물, 호르몬, 면역 및 대사산물 등을 검출하는 미량원소 분석기술이 발달함에 따라, 전신건강의 진단, 평가, 예방 분야에서 타액의 활용가능성이 높아지고 있다. 진단 검체로써 타액은 혈액에 비해 채취 방법이 비 침습적이어서 환자의 불편감이 적고 비 전문가에 의한 검체 수집이 가능할 뿐 아니라 채취과정 중 감염 위험성이 낮다는 점에서 장점이 있다. 이러한 이유로 스트레스, 마이크로바이옴, 유전학 및 후생유전학 분야의 연구에 있어 타액 내 단백질, 유전물질이나 각종 생체표지자 등을 활용하는 방법이 주목받고 있다. 또한 전신 건강에 대한 빅데이터 수집 연구와 관련하여 타액을 효율적으로 활용, 보관하기 위한 인체 자원 은행의 필요성이 강조되고 있으며, 조직공학과 접목하여 타액선 재생연구도 활발히 진행되고 있다. 검체 채취법이나 보관, 활용 방법의 표준화를 비롯하여 해결해야 할 과제가 남아있으므로, 본 리뷰에서 타액 및 타액선에 관한 최근의 연구 동향을 알아보고 미래 발전 방향에 대하여 검토해 보고자 하였다.

방사선조사가 백서 타액선의 clusterin 발현에 미치는 영향 (Effect of irradiation on expression of clusterin in the rat salivary glands)

  • 오규명;최용석;황의환;이상래
    • Imaging Science in Dentistry
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    • 제36권1호
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    • pp.33-40
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    • 2006
  • Purpose : To investigate clusterin expression in the acini and ductal cells of rat submandibular glands after Co-60 gamma irradiation. Materials and Methods : The male Sprague-Dawley rats weighing approximately 250 gm were divided into control and experimental groups. The experimental group was irradiated with a single absorbed dose of 2, 5, 10, and 15 Gy on the head and neck region. All the rats were sacrificed at 1, 3, 7, 14, 21, and 28 days after irradiation. The specimens including the submandibular gland were sectioned and observed using a immunohistochemical method. Results : In the 2 Gy group, clusterin expression was similar to that of the control group at 1 day after irradiation and it was observed in the striated ductal cells at 3 days after irradiation. In the 5 Gy group, clusterin expression was observed in the striated ductal cells at 1 day after irradiation and gradually increased in the 10 and 15 Gy groups. In the 15 Gy group, clusterin expression was prominent in the striated ductal cells at 1 day after irradiation, but it gradually decreased with the experimental period. The destruction of the striated ductal cells was observed in the 2 Gy group at 21 days after irradiation and in the 5, 10, and 15 Gy groups at 7 days after irradiation. The destruction of the acinar cells was observed in the 2 Gy group at 28 days after irradiation and in the 5, 10, and 15 Gy groups at 14 days after irradiation. Conclusion : Clusterin expression was induced by low doses of irradiation and it appeared to be involved in the regulation of cellular response to irradiation.

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뺨 점막에 발생한 충실성 선양낭성암종의 세침흡인 세포학적 소견 - 1예 보고 - (Fine Needle Aspiration Cytology of Solid Type Adenoid Cystic Carcinoma of Buccal Mucosa - A Case Report -)

  • 김진아;김영실;이안희;심상인;김병기;김경미
    • 대한세포병리학회지
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    • 제11권2호
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    • pp.89-92
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    • 2000
  • Adenoid cystic carcinoma constitutes 4 percent of ail benign and malignant epithelial salivary gland tumors and is a highly malignant tumor of the salivary glands. The cytologic presentation in aspirates is usually characteristic with spherical clusters(balls) of small tumor cells filled with hyaline material. But in case of the poorly differentiated variety(solid type), it is difficult to differentiate from other tumors because sheets of small, fairly monotonous malignant cells, with somewhat larger and more conspicuous nuclei are only seen. The cytologic findings of fine needle aspiration of solid type adenoid cystic carcinoma of buccal mucosa in a 51-year-old man are presented. On cytologic findings, solid sheets of monotonous tumor cells with focal necrosis was noted on a hemorrhagic background and the characteristic cytologic features of adenoid cystic carcinoma was absent.

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타액선 스캔의 정량적 분석과 타액분비율과의 상관관계에 관한 연구 (Quantification of Salivary Gland Scan Image and its Correlation with Salivary Flow Rate)

  • 김성헌;김연중;정성창
    • Journal of Oral Medicine and Pain
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    • 제26권3호
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    • pp.215-224
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    • 2001
  • 서울대학교 치과병원 구강진단과에 구강건조증을 주소로 내원한 환자중 비자극 전타액 분비율이 0.2ml/min이하인 환자 40명과 구강건조증의 증상 및 징후가 없고 정상 타액분비율을 보이는 10명을 대상으로 비자극 전타액 분비율을 측정하고 타액선 스캔 검사를 실시하여 주타액선의 스캔 영상을 정량화한 후 이의 상관관계를 조사한 결과 다음과 같은 결론을 얻었다. 1. 구강건조증 환자군 및 정상 대조군에서 타액선 스캔 영상의 정량적 분석시 이하선 및 악하선 모두에서 좌우측 사이의 유의성 있는 차이가 없었다. 2. 타액선 스캔 영상의 정량적 분석시 구강건조증 환자군은 대조군에 비하여 악하선, 이하선 및 악하선의 합, 양측 악하선 합에서 유의한 차이를 보였다. 3. 대조군에서 타액선 스캔 영상의 정량적 수치와 비자극 전타액 분비율과는 유의성 있는 상관관계가 관찰되지 않았으나, 구강건조증 환자군에서는 유의성 있는 상관관계가 관찰되었다. 4. 구강건조증 환자군을 비자극성 전타액 분비율에 따라 세분하였을 때, 비자극 전타액 분비의 감소가 극심하여 그 측정이 불가능하였던 군은 대조군 및 나머지 구강건조증 환자군에 비하여 타액선 스캔 영상의 정량적 수치에서 유의한 차이를 보였다.

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식도의 선양 낭포성 암종의 치험 - 1예 보고 - (Adenoid Cystic Carcinoma of the Esophagus - A case report -)

  • 윤주식;나국주;송상윤;최용선;김상형;오상기
    • Journal of Chest Surgery
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    • 제42권3호
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    • pp.392-395
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    • 2009
  • 선양 낭포성 암종은 주로 주타액선, 호흡기 등에 잘 발생하는 종양으로 식도에서는 매우 드물게 발생한다. 식도의 선양 낭포성 암종은 타액선에 발생하는 것과는 임상병리학적으로 차이가 있으며, 악성도가 높고 예후가 불량하다. 저자들은 65세 남자 환자에서 발생한 식도의 선양 낭포성 암종을 치험하였기에 이에 대한 수술 및 임상병리적 소견을 문헌 고찰과 함께 보고하고자 한다.

P2X7 Receptor-mediated Membrane Blebbing in Salivary Epithelial Cells

  • Hwang, Sung-Min;Koo, Na-Youn;Choi, Se-Young;Chun, Gae-Sig;Kim, Joong-Soo;Park, Kyung-Pyo
    • The Korean Journal of Physiology and Pharmacology
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    • 제13권3호
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    • pp.175-179
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    • 2009
  • High concentrations of ATP induce membrane blebbing. However, the underlying mechanism involved in epithelial cells remains unclear. In this study, we investigated the role of the P2X7 receptor (P2X7R) in membrane blebbing using Par C5 cells. We stimulated the cells with 5 mM of ATP for 1${\sim}$2 hrs and found the characteristics of membrane blebbing, a hallmark of apoptotic cell death. In addition, 500 ${\mu}M$ Bz-ATP, a specific P2X7R agonist, induced membrane blebbing. However, 300 ${\mu}M$ of Ox-ATP, a P2X7R antagonist, inhibited ATP-induced membrane blebbing, suggesting that ATP-induced membrane blebbing is mediated by P2X7R. We found that ATP-induced membrane blebbing was mediated by ROCK I activation and MLC phosphorylation, but not by caspase-3. Five mM of ATP evoked a biphasic $[Ca^{2+}]_i$ response; a transient $[Ca^{2+}]_i$ peak and sustained $[Ca^{2+}]_i$ increase secondary to ATP-stimulated $Ca^{2+}$ influx. These results suggest that P2X7R plays a role in membrane blebbing of the salivary gland epithelial cells.