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Resistance by Allostery: A Novel Perspective for Eg5-Targeted Drug Design
Viswanath, Ambily Nath Indu,Pae, Ae Nim American Chemical Society 2013 Journal of medicinal chemistry Vol.56 No.16
<P>Talapatra et al. elucidated the molecular basis of resistance by characterizing the binding interactions between Eg5 and the allosteric inhibitor SB743921. The investigation, employing biochemical, biophysical, and structural analyses, made path-breaking revelations in Eg5 studies and discussed a novel phenomenon “resistance by allostery”, which could have far-reaching consequences from a rational drug design perspective.</P>
Recent trends in the development of diagnostic tools for diabetes mellitus using patient saliva
Viswanath, B.,Choi, C.S.,Lee, K.,Kim, S. Elsevier Scientific Pub. Co 2017 Trends in analytical chemistry Vol.89 No.-
<P>Diabetes mellitus is a worldwide health concern due to its high prevalence; almost 8.3% of the global population suffers from diabetes. It is a group of metabolic diseases classified by hyperglycemia resulting from defects in insulin secretion, insulin action, or both. Owing to the lack of simple diagnosis and treatment strategies, diabetes is a major cause of death worldwide, and more than 50% of cases remain undiagnosed. In addition, without timely diagnosis, diabetes-related complications and morbidity increase exponentially. Therefore, early diagnosis of diabetes is essential to prevent devastating complications. The current method of investigation requires a painful needle-prick to take blood, which could discourage individuals from seeking diagnosis. Recently, researchers have attempted to use patient saliva as a non-invasive method for identifying cases of diabetes. In this feature article, we discuss recent trends in the development of diagnostic tools for diabetes mellitus using patient saliva. (C) 2017 Published by Elsevier B.V.</P>
Viswanath, N.S.M.,Arunkumar, Paulraj,Kim, Ha Jun,Im, Won Bin Elsevier 2019 CHEMICAL ENGINEERING JOURNAL -LAUSANNE- Vol.375 No.-
<P><B>Abstract</B></P> <P>Layered metal oxide nanosheets have been the most promising class of two-dimensional material in the post-graphene area due to their diversity in composition, structure, and functionality. Devising new exfoliation pathways has been an essential requirement in the fabrication of functional devices employing inorganic nanosheets. Here, we report on the exfoliation of a double-layered perovskite, NaGdMgWO<SUB>6</SUB>:Eu<SUP>3+</SUP> (NGMWO:Eu<SUP>3+</SUP>), into nanosheets <I>via</I> a proton exchange process and intercalation of ethylamine ions. A colloidal suspension of nanosheets exhibited red emission arising from the <SUP>5</SUP>D<SUB>0</SUB> → <SUP>7</SUP>F<SUB>J</SUB> transitions of Eu<SUP>3+</SUP> under host-mediated excitation and direct excitation of Eu<SUP>3+</SUP>. The exfoliated nanosheets exhibited intense Eu<SUP>3+</SUP> emission compared with the bulk form, largely arising from host-mediated excitation rather than direct Eu<SUP>3+</SUP> excitation. The enhanced nanosheet emission is attributed to the increased energy transfer efficiency from the host to Eu<SUP>3+</SUP>, high surface to volume ratio, and lower dimensionality of nanosheets. H<SUB>2</SUB>O<SUB>2</SUB> sensing in the synthesized NGMWO:Eu<SUP>3+</SUP> nanosheets was demonstrated <I>via</I> PL quenching, which followed a combined static and dynamic quenching mechanism.</P> <P><B>Highlights</B></P> <P> <UL> <LI> NaGdMgWO<SUB>6</SUB>:60%Eu<SUP>3+</SUP> nanosheets were synthesized using a chemical exfoliation method. </LI> <LI> The concentration quenching was significantly extended from 30 to 60 at.% of Eu<SUP>3+</SUP>. </LI> <LI> The CT bands of Eu-O were significantly reduced in the current nanosheet form. </LI> <LI> NaGdMgWO<SUB>6</SUB>:60%Eu<SUP>3+</SUP> nanosheets show relatively high PL QY than in bulk form. </LI> <LI> This material exhibited the H<SUB>2</SUB>O<SUB>2</SUB> sensing abilities through the PL quenching studies. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Viswanath, Buddolla,Kristine, Yuzon Ma,Kim, Sanghyo Elsevier 2018 Trends in analytical chemistry Vol.98 No.-
<P>Among the foodborne microorganisms, bacteria are the leading reason for serious outbreaks and lead to spread the diseases irrespective of the region. Therefore, immediate detection has become an important issue to stop the spread of the bacterial pathogens before it leads to serious outbreaks. In recent years, rapid advances in complementary metal oxide semiconductor (CMOS) technology gained importance as a dominant technology for fabricating microdevices to use in biomedical research and diagnosis. This technology is consistent, manufacturable, requires low power, low cost, and, perhaps most importantly, scalable. In this feature article, we discuss the recent progresses of CMOS image sensors in the detection foodborne bacterial pathogens. In addition, this article presents and discusses trends in designing of CMOS sensors along with the challenges and future prospective of these sensors to detect foodborne bacterial pathogens. In conclusion, these methods of pathogen detection would offer a great commercial advantage than other methods. (C) 2017 Elsevier B.V. All rights reserved.</P>
Recent insights into nanotechnology development for detection and treatment of colorectal cancer
Viswanath, Buddolla,Kim, Sanghyo,Lee, Kiyoung Dove Medical Press 2016 INTERNATIONAL JOURNAL OF NANOMEDICINE Vol.11 No.-
<P>The global incidence of colorectal cancer (CRC) is 1.3 million cases. It is the third most frequent cancer in males and females. Most CRCs are adenocarcinomas and often begin as a polyp on the inner wall of the rectum or colon. Some of these polyps become malignant, eventually. Detecting and removing these polyps in time can prevent CRC. Therefore, early diagnosis of CRC is advantageous for preventive and instant action interventions to decrease the mortality rates. Nanotechnology has been enhancing different methods for the detection and treatment of CRCs, and the research has provided hope within the scientific community for the development of new therapeutic strategies. This review presents the recent development of nanotechnology for the detection and treatment of CRC.</P>
Deepak Viswanath, Anindita Sarma 대한예방치과학회 2015 International Journal of Clinical Preventive Denti Vol.11 No.1
Objective: The aim of the study was to assess the impact of different and newer health education methods amongst the parents of pre-schoolers from Bangalore-North. Methods: The study comprised of 180 parents along with their respective children from the same socio-economic status from three different play schools having strength of 60 children each. Further, in each school, the children were randomly divided into three groups and questionnaires were distributed on three consecutive days; the filled questionnaires were collected half an hour later on all the three consecutive days. Results: Comparison of the statistical data showed that there was a significant statistical improvement in all groups except the control group. In our study, the respective subgroup III (involving 20 parents each) from all the groups A, B, and C showed significant improvement when compared with other subgroups (I and II). Conclusion: A motion media presentation, as a method of health education and promotion indeed had a big impact on the oral health attitude and knowledge of the parents so that these parents can act as reinforces in improving the oral health among their children.
Abhishek Viswanath,김헌 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
Herein we report the development of Ca0.8 Sm0.133 TiO₃/ Poly butadiene composites as an ideal candidate for the fabrication of microwave dielectric substrates. Because of their exceptionally high dielectric constant and low tan δ, ceramic materials have been extensively investigated for high-frequency applications, particularly in the microwave region. Phase pure Ca0.8Sm0.133TiO₃ was developed using a Standard solid-state approach. The matrix consist of poly butadiene (PB) powder is consistently blended with the filler by using a two-roll mixer. The thermo-lamination process is used to create filler polymer composites. The optimum filler-loaded composite with a coefficient of thermal expansion of 35 has a dielectric constant of 9.2 and a tan δ of 0.003. The thermal expansion of the substrates was found to be very similar to that of copper, allowing for superior copper cladding adaptation and the development of a flexible microwave substrate material.