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Kaba, Mehmet,Pirincci, Necip,Benli, Erdal,Gecit, Ilhan,Gunes, Mustafa,Yuksel, Mehmet Bilgehan,Tok, Adem,Kemik, Ahu Sarbay Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.1
Background: Evidence indicates that Dickkopf-1 (DKK-1) levels may be a biomarker for cancer risk. The aim of this study was to assess DKK-1 and its correlation with clinic-pathological features in patients with bladder cancer. Materials and Methods: DKK-1 levels were determined in serum samples from 90 patients with bladder cancer before transurethral tumor resection. The concentrations of DKK-1 were determined by using enzyme linked immune-sorbent assay (ELISA). Results: Elevated preoperative DKK-1 levels were associated with tumor stage (p<0.001), grade (p<0.001) and histological grade (p<0.001). Conclusions: The results of our study demonstrated that the level of serum DKK-1 is correlated with both disease progression and increase in the tumor grade. Preoperative serum DKK-1 elevation may thus represent a novel marker for the determination of bladder cancer and the detection of patients with a likely poor clinical outcome.
Serum Levels of Trace Elements in Patients with Prostate Cancer
Kaba, Mehmet,Pirincci, Necip,Yuksel, Mehmet Bilgehan,Gecit, Ilhan,Gunes, Mustafa,Ozveren, Huseyin,Eren, Huseyin,Demir, Halit Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.6
Background: Trace elements are major components of biological structures; however, excessive levels of these elements can be toxic. Materials and Methods: In the present study, serum levels of trace elements were measured in 30 patients with newly diagnosed as prostate cancer and 32 healthy volunteer by using furnace atomic absorption spectrophotometry. Results: It was found that there was an increase in serum levels of Co, Cu, Mg and Pb (p<0.05), whereas a decrease in serum levels of Fe, Mn, and Zn levels in patients with prostate cancer (p<0.05). Conclusions: These changes may be important in the pathogenesis of prostate cancers; however, further prospective studies are needed to identify relationships between prostate cancer and trace elements.
Religion, Immigration and Assimilation
Amadu Jacky Kaba(아마두 재키 카바) 한국라틴아메리카학회 2008 라틴아메리카연구 Vol.21 No.2
This paper argues that there are geographic and human (racial makeup) similarities in the emigration of Hispanics/Latinos to the U.S. and that of North Africans/Muslims to Europe. The paper argues, however, that compared to their counterparts in Europe, the Hispanic/Latino population in the U.S. tends to be more assimilated, with shared religious history (Christianity) being a big part of the reason for such assimilation. To put differently, unlike North African/Muslim immigrants in Europe, Latin American immigrants are more integrated in the U.S. because most of them share with the majority of the population similar beliefs in conservative traditions, Christianity and God, while North Africans in Europe tend to be Muslims in a Christian continent, very conservative and religious in a continent that is increasingly becoming secular and relying less in religion and God.
남궁현,KABA ABDI MIRGISSA,오현규,전현진,윤정환,Haseul Lee,김도현 한국바이오칩학회 2022 BioChip Journal Vol.16 No.1
We report a quantitative and systematic method for determining 3D-printing and surface-treatment conditions that can help improve the optical quality of direct-printed microfluidic devices. Digital light processing (DLP)-stereolithography (SLA) printing was extensively studied in microfluidics owing to the rapid, one-step, cleanroom-free, maskless, and high-definition microfabrication of 3D-microfluidic devices. However, optical imaging or detection for bioassays in DLP-SLA-printed microfluidic devices are limited by the translucence of photopolymerized resins. Various approaches, including mechanical abrasions, chemical etching, polymer coatings, and printing on transparent glass/plastic slides, were proposed to address this limitation. However, the effects of these methods have not been analyzed quantitatively or systematically. For the first time, we propose quantitative and methodological determination of 3D-printing and surface-treatment conditions, based on optical-resolution analysis using USAF 1951 resolution test targets and a fluorescence microbead slide through 3D-printed coverslip chips. The key printing parameters (resin type, build orientation, layer thickness, and layer offset) and surfacetreatment parameters (grit number for sanding, polishing time with alumina slurry, and type of refractive-index-matching coatings) were determined in a step-wise manner. As a result, we achieved marked improvements in resolution (from 80.6 to 645.1 lp/mm) and contrast (from 3.30 to 27.63% for 645.1 lp/mm resolution). Furthermore, images of the fluorescence microbeads were qualitatively analyzed to evaluate the proposed 3D-printing and surface-treatment approach for fluorescence imaging applications. Finally, the proposed method was validated by fabricating an acoustic micromixer chip and fluorescently visualizing cavitation microstreaming that emanated from an oscillating bubble captured inside the chip. We expect that our approach for enhancing optical quality will be widely used in the rapid manufacturing of 3D-microfluidic chips for optical assays.