114 research outputs found
Classification of Metastatic versus Non-Metastatic Axillary Nodes in Breast Cancer Patients: Value of Cortex-Hilum Area Ratio with Ultrasound
Purpose: To investigate the significance of the cortex-hilum (CH) area ratio and longitudinal-transverse (LT) axis ratio and the blood flow pattern for diagnosis of metastatic axillary lymph nodes by ultrasound in breast cancer patients. Methods: From October 2005 to July 2006, we prospectively evaluated axillary nodes with ultrasound in 205 consecutive patients who had category 4B, 4C or 5 breast lesions according to the Breast Imaging Reporting and Data System-Ultrasound (BI-RADS-Ultrasound ยฎ). Among the 205, there were 24 patients who had pathologic verification of breast cancer and axillary lymph node status. For a total of 80 axillary nodes we measured the areas of the cortex and hilum of lymph nodes and calculated the area ratio. We also measured the length of the longitudinal and transverse axis of the lymph nodes and calculated the length ratio. We evaluated the blood flow pattern on power Doppler imaging and classified each lymp
Bee Venom Inhibits Prostate Cancer Growth in LNCaP Xenografts via Apoptosis
์ฐ๊ตฌ๋ชฉ์ : ์ด ์ฐ๊ตฌ๋ ๋ด์ฝ์นจ์ ๋ด๋
์ด NF-ฮบB ํ์ฑ์ต์ ์ ์๋๋ก๊ฒ ์์ฉ์ฒด ์กฐ์ ๋จ๋ฐฑ์ง ๋ฐ ์ธํฌ์๋ฉธ์ฌ ์กฐ์ ๋จ๋ฐฑ์ง์ ๋ฐํ์ ํตํ์ฌ ์ธํฌ์๋ฉธ์ฌ๋ฅผ ์ ๋ํ๊ณ , ์ ๋ฆฝ์ ์์ธํฌ๋ฅผ ์ด์ํ ์ฅ์์์ ์ธํฌ์๋ฉธ์ฌ ์ ๋ ํจ๊ณผ๋ฅผ ํ์ธํจ์ผ๋ก์จ, ๋ด์ฝ์นจ์ ๋ด๋
์ด ์์ฒด ๋ด์์๋ ์ธํฌ์๋ฉธ์ฌ๋ฅผ ์ ๋ํ์ฌ ์ ๋ฆฝ์ ์์ ํจ๊ณผ๋ฅผ ๋ํ๋์ ํ์ธํ๊ณ ์ ํ์๋ค.
์คํ๋ฐฉ๋ฒ : ์ธํฌ์๋ฉธ์ฌ์ ๊ด์ฐฐ์๋ DAPI, TUNEL staining assay๋ฅผ ์ํํ์์ผ๋ฉฐ, ์ธํฌ์๋ฉธ์ฌ ์กฐ์ ๋จ๋ฐฑ์ง์ ๋ณ๋ ๊ด์ฐฐ์๋ western blot analysis๋ฅผ ์ํํ์๊ณ , ์ธํฌ์๋ฉธ์ฌ์ ์ฐ๊ด๋ NF-ฮบB์ ํ์ฑ ๋ณํ๋ฅผ ๊ด์ฐฐํ๊ธฐ ์ํด EMSA๋ฅผ ์ํํ์๋ค.
๊ฒฐ ๊ณผ :
1. DAPI, TUNEL staining assay ๊ฒฐ๊ณผ ๋ด๋
๋ฐ melittin์ ์ฒ๋ฆฌํ LNCaP ์ธํฌ ๋ชจ๋์์ ์ธํฌ์๋ฉธ์ฌ ์ ๋์จ์ด ์ ์ํ ์ฆ๊ฐ๋ฅผ ๋ํ๋ด์๋ค.
2. LNCaP ์ธํฌ์ ๋ด๋
์ด๋ melittin์ ์ฒ๋ฆฌํ ๊ฒฐ๊ณผ, ์๋๋ก๊ฒ ์์ฉ์ฒด ์กฐ์ ๋จ๋ฐฑ์ง ์ค p-Akt, COX-2, calpain์ ๋ด๋
๊ณผ melittin ๋ชจ๋์์ ์ ์ํ ๊ฐ์๋ฅผ ๋ํ๋ด์๊ณ , Akt๋ melittin์์ ์ ์ํ ๊ฐ์๋ฅผ ๋ํ๋์ผ๋ฉฐ, ๋ด๋
์์ ์ฆ๊ฐํ๋ ๊ฒฝํฅ์ ๋ณด์๊ณ , MMP-9์ ์ฆ๊ฐํ์๋ค.
3. ์์ฒด ๋ด์์์ ๋ด๋
์ ํญ์ํจ๊ณผ๋ฅผ ํ์ธํ๊ธฐ ์ํด ์ ๋ฆฝ์ ์์ธํฌ๊ฐ ์ด์๋ ์ฅ์ ๋ด๋
์ ์ฒ๋ฆฌํ ํ ์์ธํฌ์ ๋ถํผ์ ๋ฌด๊ฒ, ์ฅ์ ์ฒด์ค์ ์ธก์ ํ ๊ฒฐ๊ณผ, ๋ด๋
์ ์ฒ๋ฆฌํ ๊ตฐ์์ ์์ธํฌ ๋ถํผ๋น์จ ๋ฐ ๋ฌด๊ฒ๋ ๊ฐ์ํ์๊ณ , ์ฅ์ ์ฒด์ค์ ์ฆ๊ฐํ์๋ค.
4. ์ ๋ฆฝ์ ์์ธํฌ๊ฐ ์ด์๋ ์ฅ์ ๋ด๋
์ ์ฒ๋ฆฌํ ๊ฒฐ๊ณผ, NF-ฮบB ํ์ฑ์์ ์ ์ํ ๊ฐ์๋ฅผ ๋ํ๋ด์๋ค.
5. ์ ๋ฆฝ์ ์์ธํฌ๊ฐ ์ด์๋ ์ฅ์ ๋ด๋
์ ์ฒ๋ฆฌํ ๊ฒฐ๊ณผ, ์ธํฌ์๋ฉธ์ฌ ์กฐ์ ๋จ๋ฐฑ์ง ์ค Bax/Bcl-2, p53, caspase-3, caspase-9, calpain์ ์ ์ํ ์ฆ๊ฐ๋ฅผ, COX-2๋ ์ ์ํ ๊ฐ์๋ฅผ ๋ํ๋์ผ๋ฉฐ, MMP-9๋ ์ฆ๊ฐ๋ฅผ ๋ํ๋ด์๋ค.
๊ฒฐ ๋ก : ์ด์์ ๊ฒฐ๊ณผ๋ ๋ด๋
์ด ์ํ๊ด ๋ด์์ ๋ฟ๋ง ์๋๋ผ ์์ฒด ๋ด์์๋ NF-ฮบB์ ํ์ฑ์ ์ต์ ํ๊ณ ์๋๋ก๊ฒ ์์ฉ์ฒด ์กฐ์ ๋จ๋ฐฑ์ง ๋ฐ ์ธํฌ์๋ฉธ์ฌ ์กฐ์ ๋จ๋ฐฑ์ง์ ์กฐ์ ์ ํตํ์ฌ ์ธ๊ฐ ์ ๋ฆฝ์ ์ ์ธํฌ์ฃผ์ธ LNCaP์ ์ธํฌ์๋ฉธ์ฌ๋ฅผ ์ ๋ํจ์ผ๋ก์จ ์ ๋ฆฝ์ ์ ์ธํฌ ์ฆ์์ต์ ํจ๊ณผ ๋ฐ ํธ๋ฅด๋ชฌ ๋น์์กด์ ์ธ ์ ๋ฆฝ์ ์์ผ๋ก์ ์ ์ด๋ฅผ ์ง์ฐ์ํค๋ ๊ฒฝํฅ์ด ์์ ๊ฒ์ผ๋ก ์ฌ๋ฃ๋๊ณ , ๋ด๋
์ด ์ ๋ฆฝ์ ์์ ์๋ฐฉ๊ณผ ์น๋ฃ์ ํจ๊ณผ์ ์ผ๋ก ํ์ฉ๋ ์ ์์ ๊ฒ์ผ๋ก ๊ธฐ๋๋๋ค
Towards the fluorescence retention and colloidal stability of InP quantum dots through surface treatment with zirconium propoxide
Through the synthetic development of sophisticated core/shell heterostructures, the fluorescent properties of quantum dots (QDs) have been steadily improved to a level that can ultimately meet the industrial demands, but their reliability is still insufficient, particularly showing low fluorescence stability against degradable conditions. As one solution to this issue, an additional physical barrier typically with an oxide phase has been introduced to protect the QD surface from the environment. In this work, a strategy for improving the stability of QDs involving the passivation of their surfaces with zirconium propoxide (Zr(PrO)4) is suggested. Multi-shelled green QDs of InP/ZnSeS/ZnS were first synthesized, and then their surfaces were in-situ-treated with Zr(PrO)4. To confirm the presence of Zr(PrO)4-derived species on the QD surfaces, chemical analyses of the Zr(PrO)4-treated QDs were performed through Fourier transform infrared, X-ray photoelectron, and inductively coupled plasma optical emission spectroscopic measurements. A photostability test of two comparative InP/ZnSeS/ZnS QDs โ one treated without and one with Zr(PrO)4 โ was performed by exposing their dispersions to ultraviolet (UV) irradiation for prolonged periods of time, up to 120โh. It was revealed that Zr(PrO)4 treatment is highly effective in improving fluorescence retention and colloidal stability
Multiple-Set Split Feasibility Problems for Asymptotically Strict Pseudocontractions
In this paper, we introduce an iterative method for solving the multiple-set split feasibility problems for asymptotically strict pseudocontractions in infinite-dimensional Hilbert spaces, and, by using the proposed iterative method, we improve and extend some recent results given by some authors
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