• Title/Summary/Keyword: Her

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Chromogenic In Situ Hybridisation Test for Breast Cancer Patients with Equivocal IHC Results - a Study from Iran

  • Mehrazma, Mitra;Kalantari, Elham;Rezvani, Hamid;Bahar, Babak;Basi, Ali;Razavi, Seyed Mohsen;Rakhshani, Nasser
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.17
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    • pp.7695-7700
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    • 2015
  • Background: HER2/neu overexpression on cell membranes of breast cancer cells is due to HER2/neu gene amplification and it is important to identify potential candidates for anti HER2 therapy with trastuzumab. IHC, FISH and CISH are standard FDA approved assays currently used to determine HER2 status in routine practice. The aim of this study was to determine HER2 gene amplification, using the CISH method in breast carcinoma samples which had IHC +2 reactions. Materials and Methods: This study was conducted from 2008-2010 using 334 consecutive breast carcinoma samples referred from local laboratories to Mehr Hospital. CISH assays were performed for all cases, and IHC tests were also done for determining efficacy and accuracy of local labs. HER2 status in local IHC tests was compared with central IHC and CISH results. Results: Of 334 breast cancer patients, 16 were negative for HER2 IHC (0, +1), 201 cases were equivocal (+2), and 31 positive (+3). Of 334 referral cases, 88 were CISH positive (26.3%) and 246 were CISH negative (73.7%). Of 201 IHC +2 cases, HER2 gene amplification was observed in 42 cases (kappa: 0.42). A 29.9% concordance was found between local IHC and central IHC. Sensitivity and specificity of local IHC were 90% and 53.8%, respectively. Conclusions: Low accuracy of IHC results in local labs was associated with the following factors: using former FDA-approved criteria for HER2 interpretation, utilizing non-validated kits, and lack of any quality assurance program. Therefore, following the new 2014 ASCO/CAP guideline and comprehensive quality assurance should be implemented to ensure accuracy of HER2 testing.

A Case of Osmotic Demyelination Syndrome in a Patient with Severe Hyponatremia Complicated by Rhabdomyolysis (횡문근융해증이 합병된 중증 저나트륨혈증 환자에서 발생한 삼투성 탈수초 증후군 1예)

  • Lee, Da Young;Hong, Chang Woo;Lee, In Hee
    • Journal of Yeungnam Medical Science
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    • v.30 no.1
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    • pp.25-30
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    • 2013
  • Hyponatremia, the most common electrolyte disorder, has been rarely reported as causing rhabdomyolysis. Osmotic demyelination syndrome (ODS), a demyelinating disease of the central pons and/or other areas of the brain, is infrequently reported as associated with rapid correction of hyponatremia. This paper reports a case of ODS after correction of severe hyponatremia complicated by rhabdomyolysis. A 47-year-old female with a history of chronic alcoholism presented herself at the hospital with altered consciousness after three days of nausea and vomiting. She was on a thiazide diuretic for essential hypertension. Her blood tests upon her hospital admission showed hyponatremia ($Na^+$ 98 mEq/L), hypokalemia ($K^+$ 3.0 mEq/L), and elevation of her serum creatine phosphokinase (3,370 IU/L) with an increase in her serum myoglobin level 11,267 ng/mL). She was treated with intravenous fluid therapy that included isotonic and hypertonic salines along with potassium chloride. She became more alert, and her neurological condition gradually improved after the first five days of her therapy. On the ninth day after her admission, she developed progressive quadiaresis associated with dysarthria, dysphagia, and dystonia despite the resolution of her hyponatremia. Magnetic resonance imaging of her brain on 16th day revealed symmetrical areas of signal hyperintensity in her central pons, basal ganglia, and precentral gyrus in T2-weighted images, which are consistent with ODS. Her neurological symptoms steadily improved after six weeks with only supportive treatment and rehabilitation.

The Characterization of Anti-HER-2/neu Monoclonal Antibody using Different in vivo Imaging Techniques

  • Moon, Cheol;Kim, Eun Jung;Choi, Dan Bee;Kim, Byoung Soo;Kim, Sa Hyun;Choi, Tae Hyun
    • Biomedical Science Letters
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    • v.21 no.1
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    • pp.23-31
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    • 2015
  • Recently, specific antibodies have been used extensively to diagnose and treat various diseases. It is essential to assess the efficacy and specificity of antibodies, especially the in vivo environment. Anti-HER-2/neu mAb was evaluated as a possible transporting agent for radioimmunotherapy. The monoclonal antibody was successfully radio-labeled with $^{131}I$. In vitro binding assays were performed to confirm its targeting ability using another radio-iodine, $^{125}I$. Binding percentage of $^{125}I$ labeled anti-HER-2/neu mAb in HER-2/neu expressing CT-26 cells was found to be 4.5%, whereas the binding percentage of $^{125}I$ labeled anti-HER-2/neu mAb in wild-type CT-26 was only 0.45%. In vivo images were obtained and analyzed through $\gamma$-camera and an optical fluorescent modality, IVIS-200. $\gamma$-camera images showed that $^{131}I$ labeled anti-HER-2/neu mAb accumulated in HER-2/neu CT-26 tumors. Optical imaging based on near infrared fluorescence labeled anti-HER-2/neu mAb showed higher fluorescence intensities in HER-2/neu CT-26 tumors than in wild-type CT-26 tumors. Anti-HER-2/neu mAb was found to specifically bind to its receptor expressing tumor. Our study demonstrates that in vivo imaging technique is a useful method for the evaluation of an antibody's therapeutic and diagnostic potentials.

A Study on Cinema Costumes of Edith Head s Work (Edith Head의 작품을 통해 본 영화의상에 관한 연구)

  • 이정희
    • The Research Journal of the Costume Culture
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    • v.4 no.2
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    • pp.219-245
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    • 1996
  • Throughout her life time, Edith Head produced cinema costumes for over one thousand movies. She was the leading cinema costume designer in Hollywood. Since the Academy Awards added the area of costume design to be recognized [during 33 years of her work(1948∼1981)], she was nominated 35 times an awarded eight times. However, there were no significant studies done on her work or accomplishments although she was acknowledged as an ingenue and creative designer who elicited artistic effects by reflect character's images through their costumes. The purpose of the study was focused on revealing Edith Head's life and work as her creations had a great impact in he field of cinema costumes. It was also to emphasize the forceful affect of cinema costumes on fashion and to disclose the powerful influence of cinema costume designers. The method of the study includes reviews of literature, movies for which she created costumes, her own possessions, and fashion magazines as well as her works that were nominated and chosen for the Academy Awards. Edith head's emphasis in costume design was based on a blend of both simplicity and sophistication avoiding excessive exaggeration and transformation in her work. Her work was also realistic and contemporary. She developed a dramatic ambience through an innovative design while preserving the actor's individual character and uniqueness. Through this accept her her work was highly renowned as an art form as it was gaining popularity. She was also a dominant figure who influenced trends in the areas of fashion magazines, uniforms, and public clothing. In the review of her cinema costumes, it was revealed that the styles of cinema costumes can be as quickly adapted by the public as movies are viewed because the cinema costumes are highly projected through a visual channel. Subsequently, a follow up study on the affect of cinema costumes on fashion would be beneficial.

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Vivienne Westwood in Context and Englishness in Her Work

  • Choi, Kyung-Hee
    • The International Journal of Costume Culture
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    • v.8 no.2
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    • pp.61-70
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    • 2005
  • A representative British designer, Vivienne Westwood's work. world from radical punk style to aristocratic historical dress is explored in context in terms of Englishness. National identity opens up into the process of mobilization of collective sentiment in the national context, unlike nationalism, and Englishness signifies the idea or emotion of England in contrast with Britishness, the political constructor influenced by geographical aspects. There is no doubt that Vivienne Westwood is central to ideas about creativity and originality in English design on subculture. However, in evaluating a designer and her work we should consider the entire context surrounding her from a broader view, rather than arguing only her own ingenuity. In this article, through reconsidering her originality in the historical reference as well as the resistant punk style in aspect of fluid national identity, I show a case of a constituted Englishness, forged by Vivienne Westwood as a cultural creator of national identity. Vivienne Westwood's case hints the complexities of national culture, which constantly shifts, translating her understandings of history and culture into fashion in her contemporary insight and glamorous ways.

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A Theoretical Study on the Causes of the Sinking Disaster of M/V Hanjin-Inchon ("한진인천"호 침몰종의 원인에 관한 이론적인 연구)

  • 윤점동;권종호;주재훈;허용범;윤순동
    • Journal of the Korean Institute of Navigation
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    • v.11 no.2
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    • pp.33-52
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    • 1987
  • The disasters of wet bound vessels have been more frequent than those of east bound ones on the sea routes of the North Pacific Ocean in winter season. M/V Hanjin-Inchon was also west bound in her missing voyage. The container vessel of 17, 676 gross tons, M/V Hanjin-Inchon owned by Hanjin Shipping Co.Ltd in Seoul Korea left seattle in west coast of U.S.A for Pusan , Korea on the 5th Feb., 1987 and sailed along the exact courses recommended by Ocean Routes until she reported her position and speed as 49-30N, 158-00E and 8 knots to her head office in Seoul by this ship's time 2200 hours on the 13th Feb., 1987. The above message turned out to be last message from her because she had been missing since then leaving no message but only two life boats of her name, three containers cases, large scale of oil slicks and the corpse of her 3rd mate drifting on the sea near the position reported by her last message.

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HER2 induces expression of leptin in human breast epithelial cells

  • Cha, Yujin;Kang, Youjin;Moon, Aree
    • BMB Reports
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    • v.45 no.12
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    • pp.719-723
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    • 2012
  • A close association between the obesity hormone leptin and breast cancer progression has been suggested. The present study investigated the molecular mechanism for enhanced leptin expression in breast cancer cells and its functional significance in breast cancer aggressiveness. We examined whether leptin expression level is affected by the oncoprotein human epidermal growth factor receptor2 (HER2), which is overexpressed in ~30% of breast tumors. Here, we report, for the first time, that HER2 induces transcriptional activation of leptin in MCF10A human breast epithelial cells. We also showed that p38 mitogen-activated protein kinase signaling was involved in leptin expression induced by HER2. We showed a crucial role of leptin in the invasiveness of HER2-MCF10A cells using an siRNA molecule targeting leptin. Taken together, the results indicate a molecular link between HER2 and leptin, providing supporting evidence that leptin represents a target for breast cancer therapy.

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

  • 김삼곤
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.22 no.1
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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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A Study on Elsa Schiaparelli's Work(II) (Elsa Schiaparelli의 작품세계에 관한 연구(II))

  • Kim, Il
    • Journal of the Korean Society of Costume
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    • v.20
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    • pp.179-190
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    • 1993
  • In the history of fashion, few designers have interpreted the background of the time more accurately and energetically than did Elsa Schiaparelli. She understood the new role of women and believed clothes should suit one's life style. Schiaparelli begun with sportswear, later included suits and dresses. She produced them of great elegance and extreme chic. Simplicity of line was the key to her distinctive and elegant silhouette. Even her simplest designs had elegance. Her concept of clothes was architectual : the more the plane of the body were respected, the more the garment acquired vitality. Schiaparelli combined her knowledge, timing, and sense of daring in the presentation of her designs, colors, fabrics, and embroideries. For V, the garment was not only the medium for the couturier's craft but also the place for artistic expression. Her self-conscious equation of designer's objectives with that of artist is at the heart of her work. Schiaparelli's work is an expression of desire, not merely of design.

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Radiation Response Modulation of GW572016 (EGFR/HER2 Dual Tyrosine Kinase Inhibitor) in Human Breast Cancer Xenografts (인간 유방암 세포 이식마우스에서 EGFR/HER2 복합 Tyrosine Kinase 억제제인 GW572016에 의한 방사선증진효과)

  • Kim, Yeon-Sil;Roh, Kwang-Won;Chae, Soo-Min;Mun, Seong-Kwon;Yoon, Sei-Chul;Jang, Hong-Seok;Chung, Su-Mi
    • Radiation Oncology Journal
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    • v.25 no.4
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    • pp.233-241
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    • 2007
  • Purpose: We examined the effect of the dual EGFR/HER2 tyrosine kinase inhibitor, GW572016, on EGFR/HER2 receptor phosphorylation, inhibition of downstream signaling and radiosensitization in either an EGFR or HER2 overexpressing human breast cancer xenograft. Materials and Methods: We established SCID mice xenografts from 4 human breast cancer cell line that overexpressed EGFR or HER 2 (SUM 102, SUM 149, SUM 185, SUM 225). Two series of xenografts were established. One series was established for determining inhibition of the EGFR/HER2 receptor and downstream signaling activities by GW572016. The other series was established for determining the radiosensitization effect of GW572016. Inhibition of the receptor and downstream signaling proteins were measured by the use of immunoprecipitation and Western blotting. For determining the in vivo radiosensitization effect of GW572016, we compared tumor growth delay curves in the following four treatment arms: a) control; b) GW572016 alone; c) radiotherapy (RT) alone; d) GW572016 and RT. Results: GW572016 inhibited EGFR, HER2 receptor phosphorylation in SUM 149 and SUM 185 xenografts. In addition, the p44/42 MAPK (ERK 1/2) downstream signaling pathway was inactivated by GW572016 in the SUM 185 xenograft. In the SUM 225 xenograft, we could not observe inhibition of HER2 receptor phosphorylation by GW572016; both p44/42 MAPK (Erk1/2) and Akt downstream signal protein phosphorylation were inhibited by GW572016. GW572016 inhibited growth of the tumor xenograft of SUM 149 and SUM 185. The combination of GW572016 and RT enhanced growth inhibition greater than that with GW572016 alone or with RT alone in the SUM 149 xenograft. GW572016 appears to act as an in vivo radiosensitizer. Conclusion: GW572016 inhibited EGFR/HER2 receptor phosphorylation and downstream signaling pathway proteins. GW572016 modestly inhibited the growth of tumor in the SUM 185 xenograft and showed radiosensitization in the SUM 149 xenograft. Our results suggest that a better predictor of radiation response would be inhibition of a crucial signaling pathway than inhibition of a receptor.