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      • Selected aryl thiosemicarbazones as a new class of multi-targeted monoamine oxidase inhibitors

        Mathew, Bijo,Baek, Seung Cheol,Grace Thomas Parambi, Della,Pil Lee, Jae,Joy, Monu,Annie Rilda, P. R.,Randev, Rugma V.,Nithyamol, P.,Vijayan, Vijitha,Inasu, Sini T.,Mathew, Githa Elizabeth,Lohidakshan, The Royal Society of Chemistry 2018 MedChemComm Vol.9 No.11

        <P>A series of 13 phenyl substituted thiosemicarbazones (SB1-SB13) were synthesized and evaluated for their inhibitory potential towards human recombinant monoamine oxidase A and B (MAO-A and MAO-B, respectively) and acetylcholinesterase. The solid state structure of SB4 was ascertained by the single X-ray diffraction technique. Compounds SB5 and SB11 were potent for MAO-A (IC50 1.82 ± 0.14) and MAO-B (IC50 0.27 ± 0.015 μM), respectively. Furthermore, SB11 showed a high selectivity index (SI > 37.0) for MAO-B. The effects of fluorine orientation revealed that SB11 (<I>m</I>-fluorine) showed 28.2 times higher inhibitory activity than SB12 (<I>o</I>-fluorine) against MAO-B. Furthermore, inhibitions by SB5 and SB11 against MAO-A and MAO-B, respectively, were recovered to near reference levels in reversibility experiments. Both SB5 and SB11 showed competitive inhibition modes, with <I>K</I>i values of 0.97 ± 0.042 and 0.12 ± 0.006 μM, respectively. These results indicate that SB5 and SB11 are selective, reversible and competitive inhibitors of MAO-A and MAO-B, respectively. Compounds SB5, SB7 and SB11 showed moderate inhibition against acetylcholinesterase with IC50 values of 35.35 ± 0.47, 15.61 ± 0.057 and 26.61 ± 0.338 μM, respectively. Blood-brain barrier (BBB) permeation was studied using the parallel artificial membrane permeation assay (PAMPA) method. Molecular docking studies were carried out using AutoDock 4.2.</P>

      • Temporal Trends and Future Prediction of Breast Cancer Incidence Across Age Groups in Trivandrum, South India

        Mathew, Aleyamma,George, Preethi Sara,Arjunan, Asha,Augustine, Paul,Kalavathy, MC,Padmakumari, G,Mathew, Beela Sarah Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.6

        Background: Increasing breast cancer (BC) incidence rates have been reported from India; causal factors for this increased incidence are not understood and diagnosis is mostly in advanced stages. Trivandrum exhibits the highest BC incidence rates in India. This study aimed to estimate trends in incidence by age from 2005-2014, to predict rates through 2020 and to assess the stage at diagnosis of BC in Trivandrum. Materials and Methods: BC cases were obtained from the Population Based Cancer Registry, Trivandrum. Distribution of stage at diagnosis and incidence rates of BC [Age-specific (ASpR), crude (CR) and age-standardized (ASR)] are described and employed with a joinpoint regression model to estimate average annual percent changes (AAPC) and a Bayesian model to estimate predictive rates. Results: BC accounts for 31% (2681/8737) of all female cancers in Trivandrum. Thirty-five percent (944/2681) are <50 years of age and only 9% present with stage I disease. Average age increased from 53 to 56.4 years (p=0.0001), CR (per $10^5$ women) increased from 39 (ASR: 35.2) to 55.4 (ASR: 43.4), AAPC for CR was 5.0 (p=0.001) and ASR was 3.1 (p=0.001). Rates increased from 50 years. Predicted ASpR is 174 in 50-59 years, 231 in > 60 years and overall CR is 80 (ASR: 57) for 2019-20. Conclusions: BC, mostly diagnosed in advanced stages, is rising rapidly in South India with large increases likely in the future; particularly among post-menopausal women. This increase might be due to aging and/or changes in lifestyle factors. Reasons for the increased incidence and late stage diagnosis need to be studied.

      • KCI등재

        Dissecting Inchoatives and Causatives: English get constructions

        Barrie Michael Jonathan Mathew,성문현 한국언어정보학회 2018 언어와 정보 Vol.22 No.3

        Barrie, Michael Jonathan Mathew and Sung, Moonhyun. 2018. Dissecting Inchoatives and Causatives: English get Constructions. Language and Information, 22.3. 91-108. In this paper, we present data from English get-constructions and from Northern Iroquoian to challenge the recent consensus that in no languages are causatives built on inchoatives. Our data suggest the need for distinct functional projections for the causative and inchoative. We argue that while they are bundled in other situations, the functional heads for the causative and inchoative can be split as described in the present paper. This line of research follows recent trends in investigating the fine structure of the vP layer (Alexiadou et al. 2015, Harley 2013, Kim 2011, Marantz 2013, Pylkkänen 2008, Ramchand 2008, Legate 2014). We propose a syntactic mechanism for bundling and, in doing so, account for differences in the range of possible meanings with adverbs between canonical causatives and get-causatives. Briefly, get-causatives have unbundled causative and inchoative heads and have a wider ranger of adverbial meanings due to the projection of independent CausP and InchP. Canonical causatives have a bundled Caus-Inch head, projecting a single Caus/InchP, which leads to fewer sites for adverbs to adjoin and accordingly to a narrower range of adverbial meanings. (Sogang University)

      • KCI등재

        Numeral Classifiers in Eastern Tamang

        Barrie Michael Jonathan Mathew,전재현 대한언어학회 2022 언어학 Vol.30 No.1

        Barrie, Michael Jonathan Mathew & Jun, Jaehyun. (2022). Numeral classifiers in Eastern Tamang. The Linguistic Association of Korea Journal, 30(1), 113-131. In this paper, we examine numeral classifiers and number marking in one dialect of Eastern Tamang. As Tamang is a relatively understudied dialect continuum, we give a basic description of the empirical facts. We then employ various diagnostics from the literature and one we created ourselves to determine whether classifiers compose with nouns or with numerals. We conclude that since the classifier composes with numerals, the numeral classifier is a constituent that composes with the NP. We also examine number marking and observe that the plural marker is obligatory in some environments for animate nouns, but not for inanimate nouns. We conclude by making some tentative remarks that this dialect of Eastern Tamang might be undergoing a transition from a classifier language to a number language.

      • KCI등재후보

        The Social Construction of the Long-Term Athlete Development Framework

        Mathew Dowling,Marvin Washington 글로벌지식마케팅경영학회 2021 Journal of Global Sport Management Vol.6 No.2

        This article examines the social construction of the Long-Term Athlete Development (LTAD) framework and the Canadian Sport for Life Leadership Team (now Sport for Life), the group responsible for the creation, development and promotion of LTAD. In particular, the study draws upon Schneider and Ingram’s theory of social construction and policy design and empirical data collected from the leadership team and senior civil servants to trace the socio-political developments that have led to the emergence and development of the LTAD framework and the leadership team within Canadian sport. The analysis focuses on the role of government (via Sport Canada) and how the LTAD framework and the leadership team emerged from and attempted to influence the Canadian sport policy process. The findings reveal how the adoption of the LTAD framework can, in part, be explained by the socio-political developments or ‘politicking’ that occurred within and around the creation, development and dissemination of the framework itself. More broadly, the study explains how the LTAD framework has become an increasingly orthodox conception of the athlete development process despite the absence of scientific research to support many of its claims.

      • KCI등재

        Crumpled and porous graphene for supercapacitor applications: a short review

        Mathew Elma Elizaba,Balachandran Manoj 한국탄소학회 2021 Carbon Letters Vol.31 No.4

        Research on Graphene and its importance in the field of energy conversion and storage devices such as fuel cells, batteries, supercapacitors and solar cells has gained momentum recently. It is studied to be the most suitable electrode material for enhanced performance of supercapacitors in terms of charge–discharge cycles, specific capacitance, high power and energy densities and so on, specifically due to its high conductivity and large theoretical surface area. Unfortunately, it posits lot of challenges due to its irreversible stacking between the individual sheets resulting in the decrease in the Specific Surface Area (SSA) compared to the theoretically reported values. Numerous studies have been carried out to prevent this stacking in order to increase the surface area, thereby being a more suitable material for the manufacture of electrodes for supercapacitors as its capacitance greatly depends on the electrode material. To solve this problem, the conversion of two-dimensional graphene sheets to three-dimensional crumpled graphene structure has been verified to be the most effective approach. The study of crumpled graphene has been one of the recent trends in the field of energy storage applications in consumer electronics and hybrid vehicles as the process of crumpling can be controlled to suit the prospective device applications.

      • KCI등재

        Analysis of the role of M-type hexaferrite-based materials in electromagnetic interference shielding

        Mathews Shalom Ann,Babu D. Rajan 한국물리학회 2021 Current Applied Physics Vol.29 No.-

        M-type hexaferrite has attracted much attention for its large magneto-crystalline anisotropic energy, exceptionally good chemical stability, corrosion resistance, high Curie temperature, and high coercivity. In this review paper, our goal is to examine the microwave absorption properties and related studies of M-type hexaferritebased materials. The microwave absorption properties of hexaferrite-based materials in the S, X, and Ku-band are discussed with their corresponding reflection losses. Complementarity between magnetic loss and dielectric loss is found to have a great impact on the proper absorption of microwaves. The mechanisms corresponding to the microwave absorption in different morphologies and structural adaptations of hexaferrite have been elaborated in the article. The ongoing trends and future perspectives of these materials are also outlined.

      • KCI등재

        Vimentin Targeted Nano-gene Carrier for Treatment of Renal Diseases

        Mathew Ansuja Pulickal,Uthaman Saji,Bae Eun Hui,Lee Jae Young,Park In-Kyu 대한의학회 2021 Journal of Korean medical science Vol.36 No.49

        Background: Chronic kidney disease (CKD) is a global health problem, and there is no permanent treatment for reversing kidney failure; thus, early diagnosis and effective treatment are required. Gene therapy has outstanding potential; however, the lack of safe gene delivery vectors, a reasonable transfection rate, and kidney targeting ability limit its application. Nanoparticles can offer innovative ways to diagnose and treat kidney diseases as they facilitate targetability and therapeutic efficacy. Methods: Herein, we developed a proximal renal tubule-targeting gene delivery system based on alternative copolymer (PS) of sorbitol and polyethyleneimine (PEI), modified with vimentin-specific chitobionic acid (CA), producing PS-conjugated CA (PSC) for targeting toward vimentin-expressing cells in the kidneys. In vitro studies were used to determine cell viability, transfection efficiency, serum influence, and specific uptake in the human proximal renal tubular epithelial cell line (HK-2). Finally, the targeting efficiency of the prepared PSC gene carriers was checked in a murine model of Alport syndrome. Results: Our results suggested that the prepared polyplex showed low cytotoxicity, enhanced transfection efficiency, specific uptake toward HK-2 cells, and excellent targeting efficiency toward the kidneys. Conclusion: Collectively, from these results it can be inferred that the PSC can be further evaluated as a potential gene carrier for the kidney-targeted delivery of therapeutic genes for treating diseases.

      • KCI등재후보

        Quantitative Definitions of Collaborative Research Fields in Science and Engineering

        Mathew Schwartz,박귀순,이성종 아시아기술혁신학회 2016 Asian Journal of Innovation and Policy Vol.5 No.3

        Practical methodology for categorizing collaborative disciplines or research in a quantitative manner is presented by developing a Correlation Matrix of Major Disciplines (CMMD) using bibliometric data collected between 2009 and 2014. First, 21 major disciplines in science and engineering are defined based on journal publication frequency. Second, major disciplines using a comparing discipline correlation matrix is created and correlation score using CMMD is calculated based on an analyzer function that is given to the matrix elements. Third, a correlation between the major disciplines and 14 research fields using CMMD is calculated for validation. Collaborative researches are classified into three groups by partially accepting the definition of pluri-discipline from peer review manual, European Science Foundation, inner-discipline, inter-discipline and cross-discipline. Applying simple categorization criteria identifies three groups of collaborative research and also those results can be visualized. Overall, the proposed methodology supports the categorization for each research field.

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