• 제목/요약/키워드: HER-2

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Survey of Her2-neu Expression and its Correlation with Histology of Gastric Carcinoma and Gastroesophageal Junction Adenocarcinoma

  • Madani, Seyed-Hamid;Rahmati, Ali;Sadeghi, Edris;Khazaei, Sedighe;Sadeghi, Masoud;Payandeh, Mehrdad;Amirifard, Nasrin
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권17호
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    • pp.7755-7758
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    • 2015
  • Background: There is increasing evidence that HER2-neu is an important biomarker in gastric carcinomas (GC) and gastroesophageal junction (GEJ) adenocarcinomas. The aim of this study was to evaluate HER2-neu expression and also some clinicopathological features of these neoplasms. Materials and Methods: We selected 211 paraffin-embedded blocks, 193 GC and 18 GEJ. Then 4 micron sections were prepared for staining with hematoxylin and eosin and also for IHC (Her2-neu). The Chi-square test was used for significance between expression of HER2-neu and clinicopathological parameters. Results: In patients with advanced cancer of GC and GEJ, HER2-neu overexpression was more associated with the intestinal cancer subtype. Conclusions: This could be a guide to new complementary therapy for affected patients.

도로시 워즈워드의 후기 대화시 연구 (A Study of Dorothy Wordsworth's Later Conversation Poetry)

  • 조희정
    • 영어영문학
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    • 제57권2호
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    • pp.191-215
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    • 2011
  • This paper aims at investigating Dorothy Wordsworth's later conversation poetry, which has not been the focus of critical discussions on her literary works. While many critics have been emphasizing Dorothy Wordsworth's journals and the tendency of self-effacement in her prose, this paper argues that her later poetry often reveals acute self-consciousness about the circumstances that condition this self-annihilation and searches for a creative way to endorse her own identity. In "Lines Intended for My Niece's Album," she expresses anxiety and uncertainty about the inclusion of her poetic piece in Dora Wordsworth's album, which contains poems by prominent male writers of the contemporary period. "Irregular Verses" presents Dorothy Wordsworth's self-conscious narrative of her girlhood and shows how her own ambition to become a "Poet" has been stifled by external circumstances, including the ideology that instills the idea of proper womanhood into aspiring girls. While these poems examine contemporary gender discourse and the frustrated poethood resulting from it, other poems activate conversations with William Wordsworth's poems and thereby provide a revisionary re-writing of her brother's texts. For example, in "Lines Addressed to Joanna H." Dorothy Wordsworth becomes "a woman addressed who herself addresses others." Her scrupulous approach to her own addressee refuses to subordinate the other to the self's will, and through this revision of "Tintern Abbey," Dorothy Wordsworth vicariously liberates her own self confined in her brother's poems. "Thoughts on My Sick-Bed," which echoes "Tintern Abbey" through borrowed phrases and direct address to William Wordsworth, foregrounds her own poetic identity in the form of the first-person pronoun "I." Dorothy Wordsworth's continual illness during this period of her life paradoxically allows her the time for personal reflection formerly denied to her in her busy life constantly occupied by physical and spiritual labor for others. Instead of earning satisfaction from the subsumption of her creative energy under William Wordsworth's poetical endeavor, Dorothy Wordsworth finally starts to affirm her own poetic identity that can properly express her inner vision and artistic talent. Although this final affirmation remains largely incomplete due to her later mental collapse bordering on madness, it powerfully conveys the hidden literary aspiration of the formerly frustrated female poet.

Quantification of Her-2/Neu Gene in Breast Cancer Patients using Real Time-Polymerase Chain Reaction (Q-PCR) and Correlation with Immunohistochemistry Findings

  • Abdul Murad, Nor Azian;Razak, Zuraini Abdul;Hussain, Rosniza Muhammmad;Syed Hussain, Sharifah Noor Akmal;Ching Huat, Clarence Ko;Siti Aishah, Che Md. Ali;Abdullah, Norlia;Muhammad, Rohaizak;Ibrahim, Naqiyah;Jamal, Rahman
    • Asian Pacific Journal of Cancer Prevention
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    • 제14권3호
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    • pp.1655-1659
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    • 2013
  • Background: HER-2/neu is a proto-oncogene that encodes a transmembrane tyrosine kinase growth factor which is crucial for stimulating growth and cellular motility. Overexpression of HER-2/neu is observed in 10-35% of human breast cancers and is associated with pathogenesis, prognosis as well as response to therapy. Given the imperative role of HER-2/neu overexpression in breast cancer, it is important to determine the magnitude of amplification which may facilitate a better prognosis as well as personalized therapy in affected patients. In this study, we determined HER-2/neu protein expression by immunohistochemistry (IHC) concurrently with HER-2/neu DNA amplification by quantitative real time-polymerase chain reaction (Q-PCR). Materials and Methods: A total of 53 paired tissue samples from breast cancer patients were frozen-sectioned to characterize the tumour and normal tissues. Only tissues with 80% tumour cells were used in this study. For confirmation, Q-PCR was used to determine the HER-2/neu DNA amplification. Results: We found 20/53 (37.7%) of the tumour tissues to be positive for HER-2/neu protein overexpression using IHC. Out of these twenty, only 9/53 (17%) cases were in agreement with the Q-PCR results. The concordance rate between IHC and Q-PCR was 79.3%. Approximately 20.7% of positive IHC cases showed no HER-2/neu gene amplification using Q-PCR. Conclusion: In conclusion, IHC can be used as an initial screening method for detection of the HER-2/neu protein overexpression. Techniques such as Q-PCR should be employed to verify the IHC results for uncertain cases as well as determination of HER-2/neu gene amplification.

벌선의 항해학적 고찰 (A Study on the Navigation of Fishing Raft)

  • 정공흔
    • 한국항해학회지
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    • 제10권2호
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    • pp.1-10
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    • 1986
  • For the purpose of estimation of navigational method and ability about fishing raft, we have practical navigation of her from Chujado on Oct, 7 to Maryang-ri , Kangjin-kun, Jeonranman-do on Oct.10. The results obtained are as follow : 1. Ancient navigation of her is thought to over to an isolated island in the vicinity with a good informations and experiences. 2. Speed of her in outward voyage is 1.34 knots, but is varied with structure and shape of her and ability of fishing raftman. 3. The lee way(U) of her with sail of hight 2.5m and breadth about 1.2m according to windspeed(W) is U=$0.038{\times}W$ 4. We could estimate to take only three days to go over from Chujado to Maryang-ri, Kangjin-kun. Jeonranam-do by her with sail, and make a voyage total 55 miles for thirty-four hours and ten minutes i, e, mean speed is 1.6knots resulty.

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Epidemiologic Study of Human Epidermal Growth Factor Receptor 2 Expression in Advanced/Metastatic Gastric Cancer: an Assessment of Human Epidermal Growth Factor Receptor 2 Status in Tumor Tissue Samples of Gastric and Gastro-Esophageal Junction Cancer

  • Seo, Kyung Won;Jeon, Taeyong;Kim, Sewon;Kim, Sung Soo;Kim, Kwanghee;Suh, Byoung-Jo;Hwang, Sunhwi;Choi, SeongHee;Ryu, Seungwan;Min, Jae Seok;Lee, Young-Joon;Jee, Ye Seob;Chae, Hyeondong;Yang, Doo Hyun;Lee, Sang Ho
    • Journal of Gastric Cancer
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    • 제17권1호
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    • pp.52-62
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    • 2017
  • Purpose: The Trastuzumab for gastric cancer (GC) trial identified human epidermal growth factor receptor 2 (HER2) as a predictor of successful treatment with trastuzumab (HER2 receptor targeting agent) among patients with advanced/metastatic GC. To date, the prevalence of HER2 overexpression in the Korean population is unknown. The present study aimed to assess the incidence of HER2 positivity among GC and gastroesophageal (GE) junction cancer samples and the relationship between HER2 overexpression and clinicopathological characteristics in Korean patients. Materials and Methods: Tumor samples collected from 1,695 patients with histologically proven GC or GE junction enrolled at 14 different hospitals in Korea were examined. After gathering clinicopathological data of all patients, HER2 status was assessed by immunohistochemistry (IHC) at each hospital, and IHC 2+ cases were subjected to silver-enhanced in situ hybridization at 3 central laboratories. Results: A total of 182 specimens tested positive for HER2, whereas 1,505 tested negative. Therefore, the overall HER2-positive rate in this study was 10.8% (95% confidence interval=9.3%-12.3%). The HER2-positive rate was higher among intestinal-type cases (17.6%) than among other types, and was higher among patients older than 70 years and 50 years of age, compared to other age groups. Conclusions: Our evaluation of the HER2 positivity rate (10.8%) among Korean patients with GC and GE junction indicated the necessity of epidemiological data when conducting studies related to HER2 expression in GC and GE junction.

Assessment of Ki-67 for Predicting Effective Prognosis in Breast Cancer Subtypes

  • Park, Sangjung;Park, Sunyoung;Kim, Jungho;Ahn, Sungwoo;Park, Kwang Hwa;Lee, Hyeyoung
    • 대한의생명과학회지
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    • 제24권1호
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    • pp.9-14
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    • 2018
  • Ki-67 has been widely performed and become an important biomarker in worldwide clinics, but the standard cut off value of Ki-67 index in breast cancer is still controversy. The objective study was to understand the Ki-67 in breast cancer subtypes and to investigate relative risk of breast cancer subtypes according to Ki-67 cut off value in Korean breast cancer. Immunohistochemical staining (IHC) for estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2), and Ki-67 index was examined from 123 breast cancer patients. Ki-67 index was significantly overexpressed in PR, ER, and HER2 hormone negative groups. Ki-67 index in Triple negative and HER2 subtypes was shown significantly higher than that in Luminal A and Luminal B subtype. Then, we compared the relative risk of each subtype according to 14% and 20% Ki-67 cut off value, which were applied in most clinics. Especially, 20% Ki-67 cut off value in HER2 and Triple negative subtypes was shown 8.41 fold and 2.83 fold higher relative risk than this in Luminal A subtype. Moreover, Ki-67 index in HER2 2+ or 3+ status showed significantly overexpressed than this in HER2 1+ status. At the 20% Ki-67 cut off value, HER2 1+ or 2+ status and 3+ status showed significant difference. Therefore, the 20% Ki-67 cut off value will be useful as a precise prognostic management and helpful for interpreting diverse outcomes of other subtypes in breast cancer patients.

부산 402호의 조종 성능에 관한 연구 (Maneuverabilities of the M . S . Pusan 402)

  • 김삼곤
    • 수산해양기술연구
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    • 제22권1호
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    • pp.24-28
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    • 1986
  • The maneuverabilities of the M. S. PUSAN 402 are studied, based on maneuvering indices and the data obtained from her Z test. The results obtained are summarized as follows: 1. The maneuvering indices K' and T' of the M. S. PUSAN 402 are 1. 490, 1.030 at 10$^{\circ}$ Z test and 2.644, 1.153 at 20$^{\circ}$ Z test and 3.382. 1. 027 at 30$^{\circ}$ Z test respectively. The above calculated values K', T' showed that her maneuverabilities are more increased when the rudder is used to large angle than to smaIl angle. 2. As her maneuvering indices K' and T' at 10$^{\circ}$ Z test are higher than the standard maneuvering indices of fishing boats, her turning ability was found to be higher but her obeying ability lower. 3. When the M. S. PUSAN 402 took a turn at her 10$^{\circ}$ test, running distance was about 8.4 times her own length and didn't exceed the standard maneuvering distance, 5 to 11 times ship's own length, therefore she was considered to have good maneuverabilities syntheticaIly.

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Detection of Gene Amplification by Multiplex Ligation-Dependent Probe Amplification in Comparison with In Situ Hybridization and Immunohistochemistry

  • Tabarestani, Sanaz;Ghaderian, Sayyed Mohammad Hossein;Rezvani, Hamid
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권17호
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    • pp.7997-8002
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    • 2015
  • Gene amplification is an important mechanism in the development and progression of cancer. Currently, gene amplification status is generally determined by in situ hybridization (ISH). Multiplex ligation-dependent probe amplification (MLPA) is a PCR-based method that allows copy number detection of up to 50 nucleic acid sequences in one reaction. The aim of the present study was to compare results for HER2, CCND1, MYC and ESR1 gene amplification detected by MLPA with fluorescent in situ hybridization (FISH) and chromogenic in situ hybridization (CISH) as clinically approved methods. Tissue samples of 170 invasive breast cancers were collected. All were ER positive. Tissue samples had previously been tested for HER2 using immunohistochemistry. Amplification of the selected genes were assessed using MLPA, FISH and CISH and results were compared. HER2 MLPA and ISH results were also compared with HER2 immunohistochemistry (IHC) which detects protein overexpression. Amplification of HER2, CCND1, MYC and ESR1 by MLPA were found in 9%, 19%, 20% and 2% of samples, respectively. Amplification of HER2, CCND1, MYC and ESR1 by FISH was noted in 7%, 16%, 16% and 1% of samples, respectively. A high level of concordance was found between MLPA/FISH (HER2: 88%, CCND1: 88%, MYC: 86%, ESR1: 92%) and MLPA/CISH (HER2: 84%). Of all IHC 3+ cases, 91% were amplified by MLPA. In IHC 2+ group, 31% were MLPA amplified. In IHC 1+ group, 2% were MLPA amplified. None of the IHC 0 cases were amplified by MLPA. Our results indicate that there is a good correlation between MLPA, IHC and ISH results. Therefore, MLPA can serve as an alternative to ISH for detection of gene amplification.

Brain metastasis in human epidermal growth factor receptor 2-positive breast cancer: from biology to treatment

  • Koo, Taeryool;Kim, In Ah
    • Radiation Oncology Journal
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    • 제34권1호
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    • pp.1-9
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    • 2016
  • Overexpression of human epidermal growth factor receptor 2 (HER2) is found in about 20% of breast cancer patients. With treatment using trastuzumab, an anti-HER2 monoclonal antibody, systemic control is improved. Nonetheless, the incidence of brain metastasis does not be improved, rather seems to be increased in HER2-positive breast cancer. The mainstay treatment for brain metastases is radiotherapy. According to the number of metastatic lesions and performance status of patients, radiosurgery or whole brain radiotherapy can be performed. The concurrent use of a radiosensitizer further improves intracranial control. Due to its large molecular weight, trastuzumab has a limited ability to cross the blood-brain barrier. However, small tyrosine kinase inhibitors such as lapatinib, has been noted to be a promising agent that can be used as a radiosensitizer to affect HER2-positive breast cancer. This review will outline general management of brain metastases and will focus on preclinical findings regarding the radiosensitizing effect of small molecule HER2 targeting agents.

폭력가정에서 성장한 여자 대학생에 대한 부성 콤플렉스 관점에서의 모래놀이치료 사례연구 (A Case Study of Sandplay Therapy from the Perspective of the Father Complex for a Female College Student Raised in a Wife-battering Family)

  • 심희옥
    • 가정과삶의질연구
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    • 제32권2호
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    • pp.143-157
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    • 2014
  • This study explored how a female college student from a wife-battering family overcame her negative father complex and found her femininity through sandplay therapy. The client wanted to have good relationships with people as a result of the therapy. Thirty-one therapy sessions were held. The initial phase of therapy included 1-7 sessions, the intermediate phase included 8-27 sessions, and the final phase included 28-31 sessions. The client expressed her empty heart, frozen femininity and potential to work that was blocked in terms of her internal work as well as in her ability to have relationships in the first phase of therapy. During the middle phase of therapy she pursued her real and authentic self by meeting her shadow and acknowledging the different viewpoints of others. In the final phase of therapy she welcomed a new world with determination of what she would do after graduation in a real life. Through sandplay therapy in a free and protected space, the client overcame her negative father complex and found her natural femininity.