Clinical Significance of Receptor-Interacting Protein 3 and Parkin, Essential Molecules for Necroptosis, in Breast Cancer

원규연,민선영,송정윤,임성직,한상아 한국유방암학회 2021 Journal of breast cancer Vol.24 No.1

Purpose: Receptor-interacting protein 3 (RIP3) is the main initiator of necroptosis. Parkin prevents the formation of the RIP1–RIP3 complex by promoting polyubiquitination of RIP3. However, the mechanism by which necroptosis affects the clinical features of breast cancer and prognosis is not known. Here, we aimed to study the effect of necroptosis on the clinical features and prognosis of breast cancer by assessing the expression of RIP3 and Parkin. Methods: Tissue microarrays (TMAs) were constructed from 257 cases of breast cancer. Immunohistochemistry was performed on 4-μm tissue sections from each TMA block. The χ2 test, Kaplan-Meier survival analysis with log-rank test, and Cox regression proportional hazard model were used for statistical analysis. Results: Low RIP3 expression resulted in a large tumor size and high nuclear grade. Low RIP3 expression was correlated with human epidermal growth factor receptor 2 positivity, short overall survival (OS), and short disease-free survival (DFS). The triple negative breast cancer group with low RIP3 expression and lymph node (LN) positive group with low RIP3 expression had the shortest OS. High Parkin expression was associated with high histological grade, estrogen and/or progesterone receptor negativity, and lymphatic emboli, but was not correlated with OS and DFS. OS was correlated with LN metastasis and RIP3 loss and DFS with large tumor size, LN metastasis, and RIP3 loss. Conclusion: Low RIP3 and high Parkin expression are associated with aggressive clinical features in breast cancer. RIP3, a molecular marker of necroptosis, is an independent factor associated with survival in breast cancer. Further in-depth studies are needed to investigate the role of necroptosis in breast cancer development, metastasis, and treatment in the future.

A Collision Tumor Composed of a Granulocytic Sarcoma and an Adenocarcinoma of the Stomach - A Case Report -

원규연,이주희,김용호,김윤화 대한병리학회 2011 Journal of Pathology and Translational Medicine Vol.45 No.2

Granulocytic sarcoma, also called chloroma or myeloblastoma, is an extramedullary invasive tu­mor composed of neoplastic myeloid cells. In this report, we describe a 43-year-old male patient with a collision tumor composed of an adenocarcinoma and a granulocytic sarcoma in the stom­ach. The coexistence of a granulocytic sarcoma and adenocarcinoma in the stomach has, to the best of our knowledge, not been reported in the literature. The diagnosis of granulocytic sarcoma is very difficult; especially in the absence of concurrent hematologic disease or in the uncommon setting of coexistence with another tumor. Cautious observation is needed when a finding of un­usual atypical cells admixed with an adenocarcinoma in the stomach is confronted.

점액성 세관 방추세포 신장암종의 압착도말 세포소견 - 1예 보고 -

원규연,김교영,임성직,김현철,전승현,Won, Kyu-Yeoun,Kim, Gou-Young,Lim, Sung-Jig,Kim, Hyun-Cheol,Jeon, Seung-Hyun The Korean Society for Cytopathology 2008 대한세포병리학회지 Vol.19 No.2

The recent WHO classification has recognized mucinous tubular and spindle cell carcinoma (MTSCC) as a distinct entity of renal cell carcinoma, exhibiting a mixed pattern of tubules and a surrounding spindle cell proliferation within a myxoid stroma, with low-grade nuclear features. A 51-year-old woman had an incidentally discovered renal mass. Radiologic examination revealed a large, well defined mass in the lower pole of the right kidney; a right radical nephrectomy was performed. Imprint cytologic smears from fresh surgical specimens showed cellular, cohesive clusters with thick, broad trabecular arrangements and branching structures. On high power fields, the tumor was composed of round-to-oval low-grade nuclei with vesicular chromatin and small nucleoli. The tumor cells had indistinct borders and pale, eosinophilic cytoplasm, In some areas, round-to-elongated tubular structures and spindle cell patterns were noted. Chronic inflammatory cell infiltration was noted, along with a mucinous back-ground and occasional psammoma bodies. Neither significant cytologic atypia nor mitosis was seen.

원자수준 두께의 비정형 나노소재의 합성과 기계적물성

이창구,원규연,방예지,권도현 대한기계학회 2024 대한기계학회 춘추학술대회 Vol.2024 No.5

초고변형율하 그래핀의 광학적 물성 측정

이창구,원규연 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.05

Uncoupling Protein 2 (UCP2) and p53 Expression in Invasive Ductal Carcinoma of Breast

송정윤,원규연,김교영,김윤화,임성직 대한병리학회 2010 Journal of Pathology and Translational Medicine Vol.44 No.6

Background : Uncoupling protein 2 (UCP2) is a recently identified mitochondrial inner membrane anion carrier and a negative regulator of reactive oxygen species production. In this study, we evaluated the characteristics and relationships of UCP2 and p53 expression in breast cancer tissues. Methods : Tissue microarray slides from 107 cases of invasive ductal carcinoma of the breast were constructed, UCP2 and p53 immunohistochemical staining was conducted, and clinicopathological correlations were investigated. Results : UCP2 expression in invasive ductal carcinoma was high in 53 cases (49.5%), while p53 expression in invasive ductal carcinoma was high in 37 cases (34.6%). UCP2 expression was correlated significantly with histological grade (p = 0.038) and mitotic count (p = 0.050). UCP2 expression was correlated significantly with p53 expression in invasive ductal carcinoma of the breast (p = 0.045). UCP2 expression (p = 0.8308) and p53 expression (p = 0.3292) showed no significant difference for the overall survival rate in patients with invasive ductal carcinoma. Conclusions : UCP2 expression in invasive ductal carcinoma increased proportionally with histological grade and mitotic count. High UCP2 expression in invasive ductal carcinoma was observed in conjunction with high p53 expression.

Protective Effect of Polydeoxyribonucleotide Against CCl4-Induced Acute Liver Injury in Mice

이승환,원규연,주선형 대한배뇨장애요실금학회 2020 International Neurourology Journal Vol.24 No.2

Purpose: Polydeoxyribonucleotide (PDRN) is a substance known to suppress inflammation and accelerate wound healing. In this experiment, the effect of PDRN treatment on carbon tetrachloride (CCl4)-evoked acute liver injury (ALI) was investigated using mice. Methods: We analyzed the levels of serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) and conducted hematoxylin and eosin staining in accompany with terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling staining. Western blot analysis was also conducted to assess the expressions of tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-6, adenosine A2A receptor, Bcl-2-associated X protein (Bax), and B-cell lymphoma 2 (Bcl-2). The mice were received intraperitoneal injection of 10-mL/kg CCl4, 4 times, once every 2 days. The mice in the PDRN treatment groups received intraperitoneal injection of 200-μL distilled water comprising each concentration of PDRN for 7 days starting 1 day after first CCl4 injection. Results: ALT and AST concentrations in the serum were reduced and TNF-α, IL-1β, and IL-6 expressions were decreased by PDRN injection in CCl4-evoked ALI mice. PDRN injection suppressed Bax versus Bcl-2 ratio and reduced the percentage of TUNE-positive cells in CCl4-evoked ALI mice. PDRN injection overexpressed adenosine A2A receptor in CCl4-evoked ALI mice. Conclusions: The therapeutic efficacy of PDRN also can be expected for CCl4-evoked acute urogenital injury in addition to ALI. The current research suggests that PDRN may be used for the therapeutic agent of CCl4-evoked ALI.

Chondromyxoid Fibroma of the Ethmoid Sinus Complicated by a Brain Abscess - A Case Report and Literature Review -

박용구,원규연,이주희,김윤화,김의종,김성완 대한병리학회 2010 Journal of Pathology and Translational Medicine Vol.44 No.5

Chondromyxoid fibroma (CMF) is a relatively rare bone tumor that was first described by Jaffe and Lichtenstein in 1948. CMF of the sinonasal tract is very rare. A 28-year-old male presented with long-standing, intermittent, pulsatile pain in the right temporal area. A computed tomography scan showed a 20 × 19 mm round, bony density in the right ethmoid sinus with fluid collection in the ethmoid and frontal sinuses. Additionally, a cystic lesion with surrounding edema was found in the right frontal lobe. The patient underwent a partial ethmoidectomy and frontostomy. A histological examination showed polygonal and stellate cells in a myxoid and chondroid background with a pattern of lobulation and plaque-like calcification. The bone lesion was revealed as a CMF of the ethmoidal sinus, and the frontal lobe cystic lesion was a brain abscess associated with the CMF. We present the case of a CMF of the ethmoid sinus complicated by a brain abscess.

최적화 기법을 통한 산업용 저항 온도 센서 생산공정표준화

안규태,원규연,홍하은,황성민 한국산업경영시스템학회 2023 한국산업경영시스템학회 학술대회 Vol.2023 No.춘계

Solitary, Endobronchial Metastasis from Renal Cell Carcinoma 20 Years after Nephrectomy

김민주,김정임,원규연,이한나 대한영상의학회 2021 대한영상의학회지 Vol.82 No.4

Late recurrence over 10 years after surgery and endobronchial metastasis are some of the specific biological behaviors of renal cell carcinoma (RCC). The current report describes a case of solitary endobronchial metastasis at a subsegmental bronchus that developed 20 years after curative nephrectomy for RCC. A 71‑year‑old male was admitted to our hospital for pneumonia. Chest radiography showed multifocal ill-defined nodular opacities in the right lower lung zone, suggesting pneumonia. Subsequent chest CT confirmed pneumonic infiltration in the right lung. However, a 4.3-cm, well-defined, elongated mass with a branching pattern was also identified in the right lower lobe, and a right nephrectomy scar was detected on the covered upper abdomen. The patient had undergone right nephrectomy 20 years ago due to clear cell RCC. After right lower lobectomy, the postoperative pathological diagnosis was endobronchial metastatic clear cell RCC. Endobronchial metastasis should be considered in a patient with a history of RCC who presents with a suspected endobronchial tumor, even decades after curative surgery.