http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : ( Ahmed B. Darwish ) (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Anticancer Activity of Extremely Effective Recombinant L-Asparaginase from Burkholderia pseudomallei
( Doaa B. Darwesh ),( Yahya S. Al-awthan ),( Imadeldin Elfaki ),( Salem A. Habib ),( Tarig M. Alnour ),( Ahmed B. Darwish ),( Magdy M. Youssef ) 한국미생물생명공학회 2022 Journal of microbiology and biotechnology Vol.32 No.5
L-asparaginase (E.C. 3.5.1.1) purified from bacterial cells is widely used in the food industry, as well as in the treatment of childhood acute lymphoblastic leukemia. In the present study, the Burkholderia pseudomallei L-asparaginase gene was cloned into the pGEX-2T DNA plasmid, expressed in E. coli BL21 (DE3) pLysS, and purified to homogeneity using Glutathione Sepharose chromatography with 7.26 purification fold and 16.01% recovery. The purified enzyme exhibited a molecular weight of ~33.6 kDa with SDS-PAGE and showed maximal activity at 50℃ and pH 8.0. It retained 95.1, 89.6%, and 70.2% initial activity after 60 min at 30℃, 40℃, and 50°C, respectively. The enzyme reserved its activity at 30℃ and 37℃ up to 24 h. The enzyme had optimum pH of 8 and reserved 50% activity up to 24 h. The recombinant enzyme showed the highest substrate specificity towards L-asparaginase substrate, while no detectable specificity was observed for L-glutamine, urea, and acrylamide at 10 mM concentration. THP-1, a human leukemia cell line, displayed significant morphological alterations after being treated with recombinant L-asparaginase and the IC<sub>50</sub> of the purified enzyme was recorded as 0.8 IU. Furthermore, the purified recombinant Lasparaginase improved cytotoxicity in liver cancer HepG2 and breast cancer MCF-7 cell lines, with IC<sub>50</sub> values of 1.53 and 18 IU, respectively.
-
Oral Cancer Awareness of the General Public in Saudi Arabia
Al-Maweri, Sadeq Ali,Tarakji, Bassel,Alsalhani, Anas B,Al-Shamiri, Hashem M,Alaizari, Nader Ahmed,Altamimi, Mohammad Al Sakran,Darwish, Shourouk Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.8
Background: The aim of this study was to assess the level of awareness and knowledge about signs and risk factors of oral cancer in the general population in Saudi Arabia. Materials and Methods: A self-administered questionnaire was used to collect information from Saudi adults aged 15 years and older. A total of 679 persons participated in the survey. Descriptive statistics were calculated and chi-square tests, t-tests, and one-way analysis of variance (ANOVA) were used to examine differences between groups. The significance level was set at p<0.05. Results: Only 53.6% of the participants had heard of oral cancer. Smoking and alcohol consumption were identified as the major risk factors by 81.7% and 56.3% of the participants, respectively. Only 22.2% and 18.2%, respectively, were able to correctly identify red and white lesions as early signs of oral cancer. Participants with less than high school education were significantly less aware, and had much less knowledge, of the signs and risk factors of oral cancer (p<0.05). Conclusions: This survey demonstrates a general lack of awareness among the public about oral cancer and a lack of knowledge about its signs and risk factors. There is a clear need to inform and educate the public in matters relating to the known risk factors associated with oral cancer. A media campaign informing the public about oral cancer is clearly required.
ScienceON
KISS연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
