• 제목/요약/키워드: 21)

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다발성 선천성 기형을 가진 21번 환(Ring) 염색체 1례 (A Case of Ring Chromosome 21 with Multiple Congenital Anomalies)

  • 이준화;서을주
    • Clinical and Experimental Pediatrics
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    • 제46권3호
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    • pp.291-294
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    • 2003
  • 21번 환 염색체는 심한 기형에서부터 정상에 이르기까지 다양한 표현형을 보인다. 저자들은 발달 지연과 다발성 선천성 기형을 가진 환자에서 말초혈액 염색체 검사상 21번 염색체 장완의 결실이 동반된 21번 환 염색체를 경험하였기에 이에 문헌 고찰과 함께 보고하는 바이다.

모기 살충성 내독소를 생산하는 Bacillus thuringiensis subsp. guiyangiensis 21-2균주(H serotype 43)의 특성 (Characterization of a Mosquitocidal Delta-endotoxin from Bacillus thuringiensis subsp. guiyangiensis strain 21-2(H serotype 43))

  • 김위종;김광현
    • 한국미생물·생명공학회지
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    • 제27권5호
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    • pp.359-363
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    • 1999
  • To prevent appearance of resistant mosquitoes against $\delta$-endotoxin of bacillus thuringiensis subsp. israelensis (Bti) in field, a mosquitocidal Bacillus thuringiensis strain 21-2(Bt21-2) producing a new type of $\delta$-endotoxin was isolated. The strain Bt 21-2 belongs to H serotype 43, B. thuringiensis subsp. guiyangiensis (Btg). The $\delta$-endotoxins from the strain Bt 21-2 and the strain Bti were a cuboid shape morphologically, but the $\delta$-endotoxin of the strain Bt 21-2 was composed of 150, 90 and 70kDa proteins on SDS-PAGE, and the antigenicity of $\delta$-endotoxin of the strain Bt 21-2 was different from that of the strain Bti on immunoblot. The $\delta$-endotoxin gene of the strain Bt 21-2 was not amplified with specific primers of $\delta$-endotoxin gene (cry4A and cry4B) of the strain Bti on PCR.

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Protein tyrosine phosphatase PTPN21 acts as a negative regulator of ICAM-1 by dephosphorylating IKKβ in TNF-α-stimulated human keratinocytes

  • Cho, Young-Chang;Kim, Ba Reum;Cho, Sayeon
    • BMB Reports
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    • 제50권11호
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    • pp.584-589
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    • 2017
  • Intercellular adhesion molecule-1 (ICAM-1), which is induced by tumor necrosis factor (TNF)-${\alpha}$, contributes to the entry of immune cells into the site of inflammation in the skin. Here, we show that protein tyrosine phosphatase non-receptor type 21 (PTPN21) negatively regulates ICAM-1 expression in human keratinocytes. PTPN21 expression was transiently induced after stimulation with TNF-${\alpha}$. When overexpressed, PTPN21 inhibited the expression of ICAM-1 in HaCaT cells but PTPN21 C1108S, a phosphatase activity-inactive mutant, failed to inhibit ICAM-1 expression. Nuclear factor-${\kappa}B$ (NF-${\kappa}B$), a key transcription factor of ICAM-1 gene expression, was inhibited by PTPN21, but not by PTPN21 C1108S. PTPN21 directly dephosphorylated phospho-inhibitor of ${\kappa}B$ ($I{\kappa}B$)-kinase ${\beta}$ ($IKK{\beta}$) at Ser177/181. This dephosphorylation led to the stabilization of $I{\kappa}B{\alpha}$ and inhibition of NF-${\kappa}B$ activity. Taken together, our results suggest that PTPN21 could be a valuable molecular target for regulation of inflammation in the skin by dephosphorylating p-$IKK{\beta}$ and inhibiting NF-${\kappa}B$ signaling.

Anti-Inflammatory Effect of Fermented Viola patrinii Extract

  • Kwak, Jae-Sung;Kim, Kyoung-Sook;Moon, Hyung-In;Yu, Hai-Yang;Kim, Kyung-Mi;Cho, Chang-Woo;So, Hyun-Ah;Chung, Eun-Sook;Ayarpadikannan, Salvem;Lee, Young-Choon;Lee, Jai-Heon
    • 한국약용작물학회:학술대회논문집
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    • 한국약용작물학회 2011년도 추계학술발표회
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    • pp.232-233
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    • 2011
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