21 results match your criteria: "Gurudas College[Affiliation]"

AXL/GAS6 signaling governs differentiation of tumor-associated macrophages in breast cancer.

Exp Cell Res

January 2025

Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, West Bengal, India. Electronic address:

Most epithelial cancers are infiltrated by prognostically relevant myelomonocytic cells. Immunosuppressive tumor associated macrophages (TAMs) and their precursor monocytic myeloid-derived suppressor cells (MDSCs) have previously been associated with worse outcomes in human breast cancer (BCa), yet the mechanism of immunosuppressive TAMs-polarization from myelomonocytic precursors is not completely understood. In this study, we show that persuaded AXL/GAS6 pathway alters macrophage phenotype from HLA-DRCD206CD163 classical phagocytic into HLA-DRCD206CD163 immunosuppressive ones with accelerated BCa progression, and increased angiogenesis signature and invasion ability of cancer cells at tumor beds.

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Here, we report the design and synthesis of a D⋯π⋯A-based fluorescent probe, ()-4-(4-(dibutylamine)-2-hydroxystyryl)-1-methylquinolin-1-ium (DHMQ), which is nonfluorescent in ∼100% PBS buffer medium due to a twisted intra molecular charge transfer (TICT) phenomenon and it becomes highly fluorescent (∼149 fold) in the presence of human serum albumin (HSA), owing to the restriction of its intramolecular free rotation inside the hydrophobic binding cavity of HSA. The site-selective fluorescence displacement assay and molecular docking studies clearly reveal that DHMQ selectively binds at subdomain IB of HSA. The 3/slope method was adopted to determine the limit of detection (LOD) value, which was as low as 2.

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Nonequilibrium steady states in coupled asymmetric and symmetric exclusion processes.

Phys Rev E

November 2023

Barasat Government College, 10, KNC Road, Gupta Colony, Barasat, Kolkata 700124, West Bengal, India.

We propose and study a one-dimensional (1D) model consisting of two lanes with open boundaries. One of the lanes executes diffusive and the other lane driven unidirectional or asymmetric exclusion dynamics, which are mutually coupled through particle exchanges in the bulk. We elucidate the generic nonuniform steady states in this model.

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Oxysterols or cholesterol oxidation products are a class of molecules with the sterol moiety, derived from oxidative reaction of cholesterol through enzymatic and non-enzymatic processes. They are widely reported in animal-origin foods and prove significant involvement in the regulation of cholesterol homeostasis, lipid transport, cellular signaling, and other physiological processes. Reports of oxysterol-mediated cytotoxicity are in abundance and thus consequently implicated in several age-related and lifestyle disorders such as cardiovascular diseases, bone disorders, pancreatic disorders, age-related macular degeneration, cataract, neurodegenerative disorders such as Alzheimer's and Parkinson's disease, and some types of cancers.

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The fractional order SEIQRD compartmental model of COVID-19 is explored in this manuscript with six different categories in the Caputo approach. A few findings for the new model's existence and uniqueness criterion, as well as non-negativity and boundedness of the solution, have been established. When RCovid19<1 at infection-free equilibrium, we prove that the system is locally asymptotically stable.

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RNA sequence data from SARS CoV2 patients helps to construct a gene network related to this disease. A detailed analysis of the human host response to SARS CoV2 with expression profiling by high-throughput sequencing has been accomplished with primary human lung epithelial cell lines. Using this data, the clustered gene annotation and gene network construction are performed with the help of the String database.

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In this manuscript, a fractional order model with vaccination has been proposed. The positivity and boundedness of the solutions have been verified. The stability analysis of the model shows that the system is locally as well as globally asymptotically stable at disease-free equilibrium point when < 1 and at epidemic equilibrium when .

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Dynamics of SIQR epidemic model with fractional order derivative.

Partial Differ Equ Appl Math

June 2022

Department of Mathematics, Bangabasi Evening College, Kolkata 700009, West Bengal, India.

The dynamics of COVID-19 (Coronavirus Disease-2019) transmission are described using a fractional order SIQR model. The stability analysis of the model is performed. To obtain semi-analytic solutions to the model, the Iterative Laplace Transform Method [ILTM] is implemented.

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Infectious diseases have been a constant cause of disaster in human population. Simultaneously, it provides motivation for math and biology professionals to research and analyze the systems that drive such illnesses in order to predict their long-term spread and management. During the spread of such diseases several kinds of delay come into play, owing to changes in their dynamics.

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In mid-March 2020, the World Health Organization declared COVID-19, a worldwide public health emergency. This paper presents a study of an SEIRV epidemic model with optimal control in the context of the Caputo fractional derivative of order . The stability analysis of the model is performed.

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Immunoinformatics Based Study of T Cell Epitopes in Zea m 1 Pollen Allergen.

Medicina (Kaunas)

June 2019

Deptartment of Biochemistry, Gurudas College, Kolkata 70006, India.

Zea m 1 is a pollen allergen, which is present in maize, is accountable for a type I hypersensitivity reaction in all over the world. Several effective medications are available for the disorder with various side effects. Design and verification of a peptide-based vaccine is a state-of-art technology which is more cost effective than conventional drugs.

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We report a novel phenazine-embedded fluorescent probe (2-[2-(pyridin-2-ylmethoxy)-phenyl]-1-imidazo[4,5-]phenazine, PIP), which upon complexation with Cu(II)-ion-forming [(PIP)Cu(Cl)] becomes nonfluorescent but regenerates fluorescence in a selective reaction with NO and HNO over different biologically reactive oxygen and nitrogen (ROS/RNS) species under physiological conditions. The fluorescence intensity of PIP gets quenched due to the formation of the [(PIP)Cu(Cl)] complex, which regenerates the fluorescence by 67 and 84% upon reaction either with NO or HNO, respectively, in the presence of other biological reducing species. Details of photophysical properties of PIP, [(PIP)Cu(Cl)], and [(PIP)Cu] have been studied by density functional theory (DFT) calculations.

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Diterpenoids- potential chemopreventive and chemotherapeutic agents in leukemia.

Curr Pharm Biotechnol

April 2015

Laboratory of Experimental Immunology, Department of Botany and Microbiology, Gurudas College, Kolkata 700054, India.

Leukemia remains a major cause of death in both developing as well as developed nations worldwide. Development of novel therapeutic approaches is perceived to be the best strategy to combat this disease. Availability of limited effective drugs with least side effects is the major hurdle in treating leukemia.

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Curcumin induces caspase mediated apoptosis in JURKAT cells by disrupting the redox balance.

Asian Pac J Cancer Prev

November 2014

Laboratory of Experimental Immunology, Department of Microbiology and Botany, Gurudas College, Kolkata, India E-mail :

Background: Curcumin has has been reported to exert anti-inflammatory, anti-oxidation and anti-angiogenic activity in various types of cancer. It has also been shown to induce apoptosis in leukemia cells. We aimed to unravel the role of the redox pathway in Curcumin mediated apoptosis with a panel of human leukemic cells.

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This review represents an updated scenario on the transmission cycle, epidemiology, clinical features and pathogenicity, diagnosis and treatment, and prevention and control measures of a cestode parasite Echincoccus granulosus (E. granulosus) infection causing cystic echinococcosis (CE) in humans. Human CE is a serious life-threatening neglected zoonotic disease that occurs in both developing and developed countries, and is recognized as a major public health problem.

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Cholera: a great global concern.

Asian Pac J Trop Med

July 2011

Department of Zoology, Gurudas College, Narkeldanga, Kolkata-700 054, India.

Cholera, caused by the infection of toxigenic Vibrio cholerae (V. cholerae) to humans, is a life threatening diarrheal disease with epidemic and pandemic potential. The V.

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A new highly oxygenated pseudoguaianolide, 8-beta-acetoxyhysterone C, along with the known compounds, parthenin, coronopilin and hysterone C, has been isolated from a collection of the flowers of Parthenium hysterophorus. The structure of the new compound was derived from the extensive studies of its spectral (mainly 1D and 2D NMR) data.

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