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Abjal Pasha Shaik,Asma Sultana Shaik,Ali Al Majwal,Achraf Al Faraj 대한암학회 2017 Cancer Research and Treatment Vol.49 No.2
Purpose The specific targeting of interleukin-4 receptor α (IL4Rα) receptor offers a promising therapeutic approach for inhibition of tumor cell progression in breast cancer patients. In the current study, the in vitro efficacy of superparamagnetic iron oxide nanoparticles conjugated with anti-IL4Rα blocking antibodies (SPION-IL4Rα) via polyethylene glycol polymers was evaluated in 4T1 breast cancer cells. Materials and Methods Cell viability, reactive oxygen species generation, and apoptosis frequency were assessed in vitro in 4T1 cancer cell lines following exposure to SPION-IL4Rα alone or combined with doxorubicin. In addition, immunofluorescence assessments and fluorimetry were performed to confirm the specific targeting and interaction of the developed nanocarriers with IL4Rα receptors in breast cancer cells. Results Blocking of IL4Rα receptors caused a significant decrease in cell viability and induced apoptosis in 4T1 cells. In addition, combined treatment with SPION-IL4Rα+doxorubicin caused significant increases in cell death, apoptosis, and oxidative stress compared to either SPIONIL4Rα or doxorubicin alone, indicating the enhanced therapeutic efficacy of this combination. The decrease in fluorescence intensity upon immunofluorescence and fluorimetry assays combined with increased viability and decreased apoptosis following the blocking of IL4Rα receptors confirmed the successful binding of the synthesized nanocarriers to the target sites on murine 4T1 breast cancerous cells. Conclusion These results suggest that SPION-IL4Rα nanocarriers might be used for successful reduction of tumor growth and inhibition of progression of metastasis in vivo.
Abjal P. Shaik,Abbas H. Alsaeed,Asma S. Shaik,Abdullah A. Alyousef,Vamsee K. Bammidi,Kiranmaye Sampathirao Techno-Press 2022 Advances in environmental research Vol.11 No.1
The current observational epidemiological study analyzed blood lead levels (BLLs) in occupationally exposed workers from Riyadh region, Saudi Arabia and correlated them with the alterations in the differential cell populations of the WBC panel (lymphocytes [Lym %], mixed [Mid %] cells, and neutrophils [Neu %]). In addition, we examined the effect of confounding factors and their relation to BLLs. BLLs were estimated using the LeadCare II analyzer and hematological parameters using the ADVIA 120 analyser. An inferential analysis was conducted to detect association between the observations and the subjects' clinical characateristics. A total of 132 male subjects were included in the final analyses. Based on CDC guidelines, the subjects were categorized as Group I (BLL <10 ㎍/dL; n=118) or Group II (BLL >10 ㎍/dL; n=14) with average BLLs of 4.4 ㎍/dL and 18.1 ㎍/dL, respectively (p <0.0001). The percentages of Mid cells (p <0.0001) and neutrophils (p=0.048), were significantly altered in subjects with High BLL. A regression analysis indicated that subjects > 50 years of age had significantly higher BLLs (53.2 ㎍/dL) than younger age sub-groups (p <0.0001). Age, education, and profession were significant predictors for lead toxicity. Pb exposure is a major public health issue in Saudi Arabia and calls for further investigations on the cellular and molecular effects on hematological system.
슈퍼 커패시터 전극 응용을 위한 탄소섬유에 통합된 삼중 금속 산화물 나노입자의 바인더 없는 성장 및 특성
Shaik Junied Arbaz,S. Chandra Sekhar,Bhimanaboina Ramulu,유재수 한국진공학회 2021 한국진공학회 학술발표회초록집 Vol.2021 No.2
최근, 에너지 저장소자로 슈퍼커패시터에 대한 관심이 증가하고 있다. 본 발표에서는 바인더 없는 방법, 즉 직접 성장방법을 통해 슈퍼커패시터의 전극으로 삼금속 산화물 나노입자 통합 탄소섬유를 제작하였다. 구조적 구성에서 각 요소의 기여와 나노입자의 전기화학적 반응에 대한 연구가 이루어졌기 때문에 우수한 성능 특성을 가진 샘플을 최적화했다. 최적화된 샘플은 다른 합성 샘플에 비해 CV 특성에서 높은 전류응답, GCD특성에서 긴 방전시간 및 높은 커패시턴스 값을 나타냈다. 또한 최적화된 샘플의 지속 가능성 신뢰성 및 내구성은 전극이 여러번의 충전 및 방전 사이클을 거치게 함으로써 사이클링 프로세스를 통해 연구되었다.
Activity Led Learning as Pedagogy for Digital Forensics
Shaik Shakeel Ahamad International Journal of Computer ScienceNetwork S 2023 International journal of computer science and netw Vol.23 No.4
The field of digital forensics requires good theoretical and practical knowledge, so practitioners should have an in-depth understanding and knowledge of both theory and practical as they need to take decisions which impacts human lives. With the demand and advancements in the realm of digital forensics, many universities around the globe are offering digital forensics programs, but there is a huge gap between the skills acquired by the student's and the market needs. This research work explores the problems faced by digital forensics programs, and provides solution to overcome the gap between the skills acquired by the student's and the market needs using Activity led learning pedagogy for digital forensics programs.
A Neural Network Model for Predicting Epileptic Seizures based on Fourier-Bessel Functions
Shaik.Jakeer Husain,Dr.K.S.Rao 보안공학연구지원센터 2014 International Journal of Signal Processing, Image Vol.7 No.5
To improve the social life of drug resistant epilepsy persons, a patient specific algorithm is needed that can predict seizures based on EEG with high sensitivity and specificity before the occurrence of a seizure. This algorithm predicting the seizure occurrence from Inter-ictal (seizure free) and pre-ictal (before seizure) transition. In this algorithm features are extracted by Fourier Bessel Expansion from inter-ictal and pre-ictal EEG signals. A neural network using back propagation algorithm is implemented for classification of epileptic states. The performance of algorithm is evaluated based on three measures, sensitivity, and specificity and classification accuracy. The results illustrate that the algorithm can predict seizures of two subjects before five minutes with an accuracy of 99.6%
Shaik, Baji,Han, Jin-Hee,Song, Dong Jin,Kang, Hun-Min,Lee, Sang-Gyeong National Research Council 2016 Canadian journal of chemistry Vol.94 No.6
<P> Acceptor-donor-acceptor-type compounds 5′,5″-(benzo[c][1,2,5]selenadiazole-4,7-diyl)bis(3′-dodecyl-2,2′-bithiophene-5-carbonitrile) (9) and 4,4′-(5,5′-(benzo[c][1,2,5]selenadiazole-4,7-diyl)bis(3-dodecylthiophene-5,2-diyl))dibenzonitrile (10) were designed and synthesized. These compounds differ in terminal positions, compound 9 with a thiophene-containing nitrile group and compound 10 with a phenyl-containing nitrile group. Both compounds have shown good thermal stability and low band gap. The band gaps of compounds 9 and 10 were 1.74 and 1.83 eV, respectively. These results indicate that they are promising materials for use in optoelectronics. </P>