Bilinear generating relations for a family of q-polynomials and generalized basic hypergeometric functions

In this paper, we derive a bilinear q-generating function involving basic analogue of Fox's H-function and a general class of q-hypergeometric polynomials. Applications of the main results are also illustrated

Foam-like compression behavior of fibrin networks

The rheological properties of fibrin networks have been of long-standing interest. As such there is a wealth of studies of their shear and tensile responses, but their compressive behavior remains unexplored. Here, by characterization of the network structure with synchronous measurement of the fibrin storage and loss moduli at increasing degrees of compression, we show that the compressive behavior of fibrin networks is similar to that of cellular solids. A non-linear stress-strain response of fibrin consists of three regimes: 1) an initial linear regime, in which most fibers are straight, 2) a plateau regime, in which more and more fibers buckle and collapse, and 3) a markedly non-linear regime, in which network densification occurs {{by bending of buckled fibers}} and inter-fiber contacts. Importantly, the spatially non-uniform network deformation included formation of a moving "compression front" along the axis of strain, which segregated the fibrin network into compartments with different fiber densities and structure. The Young's modulus of the linear phase depends quadratically on the fibrin volume fraction while that in the densified phase depends cubically on it. The viscoelastic plateau regime corresponds to a mixture of these two phases in which the fractions of the two phases change during compression. We model this regime using a continuum theory of phase transitions and analytically predict the storage and loss moduli which are in good agreement with the experimental data. Our work shows that fibrin networks are a member of a broad class of natural cellular materials which includes cancellous bone, wood and cork

q-Sumudu transforms pertaining to the product of family of q-polynomials and generalized basic hypergeometric functions

The prime objective of commenced article is to determine q-Sumudu transforms of a product of unified family of q-polynomials with basic (or q-) analog of Fox’s H-function and q-analog of I-functions. Specialized cases of the leading outcome are further evaluated as q-Sumudu transform of general class of q-polynomials and q-Sumudu transforms of the basic analogs of Fox’s H-function and I-functions

3D-QSAR AND MOLECULAR DOCKING STUDIES ON 1, 2, 4 TRIAZOLES AS MetAP2 INHIBITORS

Objective: Angiogenesis inhibitors are a novel class of promising therapeutic agents for treating cancer and other human diseases. Biological transformations and pathways that play a role in angiogenesis are, therefore, particularly attractive targets as potential methods for inhibiting solid tumors. MetAP2 is of particular interest because the enzyme plays a key role in angiogenesis, the growth of new blood vessels, which is necessary for the progression of diseases including solid tumor cancers and rheumatoid arthritis. In this paper we report the quantitative structure activity relationship and docking studies of 1, 2, 4 triazole derivatives for designing novel MetAP2 inhibitors. Methods: Tripos Sybyl X 2.1 program was used to conduct docking based CoMFA, CoMSIA and Topomer CoMFA QSAR modeling for a dataset of 77 triazoles. Results: The CoMFA, CoMSIA and Topomer CoMFA models demonstrated good statistical results with cross-validated coefficient (q2) of 0.703, 0.704, 0.746 and correlation coefficient (r2) of 0.894, 0.889, 0.886 respectively and these models have been externally validated. Conclusion: Based on the statistical results obtained from the above model, the CoMFA, CoMSIA and Topomer CoMFA model can be utilized to design new molecules having 1, 2, 4 triazoles as common core with significant MetAP2 inhibitory activity

Microbiological Spectrum of Brain Abscess at a Tertiary Care Hospital in South India: 24-Year Data and Review

Intracranial abscesses are life-threatening infections that pose a diagnostic challenge not only to the neurosurgeon but also to the microbiologists. Detailed studies documenting the spectrum of infecting agents involved in brain abscesses are limited from India. Materials and Methods. This is a retrospective analysis of 352 samples from 1987 to 2010 analyzed at a tertiary care hospital in South India from 1987 to 2010, to document the changing trends with time. Results. The age of the patients ranged from 2 to 80 years, a larger number of males being affected. Otogenic infections were the most common cause while cryptogenic abscesses were 20%. Gram stain and culture positivity were 78% each. Gram-positive and negative facultative aerobes and obligate anaerobes were also on the rise. Unusual organisms, like Burkholderia pseudomallei, Salmonella typhi, Nocardia species, Cladosporium bantiana, Fonsecaea pedrosoi, Entamoeba histolytica, and Acanthamoeba were also isolated and/or detected from the brain abscesses aspirate or resected tissue. Summary. New and emerging pathogens associated with brain abscess, especially in immunosuppressed individuals, have renewed the necessity of an early detection, and it will be of great value in appropriate management of patients with brain abscess

Complete genome sequence of sixteen plant growth promoting Streptomyces strains

The genome sequences of 16 Streptomyces strains, showing potential for plant growth-promotion (PGP) activities in rice, sorghum, chickpea and pigeonpea, isolated from herbal vermicompost, have been decoded. The genome assemblies of the 16 Streptomyces strains ranged from 6.8 Mb to 8.31 Mb, with a GC content of 72 to 73%. The extent of sequence similarity (in terms of shared ortholog) in 16 Streptomyces strains showed 70 to 85% common genes to the closest publicly available Streptomyces genomes. It was possible to identify ~1,850 molecular functions across these 16 strains, of which close to 50% were conserved across the genomes of Streptomyces strains, whereas, ~10% were strain specific and the rest were present in various combinations. Genome assemblies of the 16 Streptomyces strains have also provided genes involved in key pathways related to PGP and biocontrol traits such as siderophores, auxin, hydrocyanic acid, chitinase and cellulase. Further, the genome assemblies provided better understanding of genetic similarity among target strains and with the publically available Streptomyces strains

DESIGN, SYNTHESIS AND IN VITRO ANTI-CANCER ACTIVITY OF NOVEL 1,2,4-TRIAZOLE DERIVATIVES

Objective: DNA topoisomerase is one of the important targets for anticancer agents. Many triazole derivatives have been shown to possess cytotoxic activity. In this paper, we present the design and in silico docking of a virtual library of molecules with DNA topoisomerase II along with their synthesis and In vitro cytotoxicity profile. Methods: Sybyl X 2.1 programmesss were used to perform the docking experiments on DNA topoisomerase II using etoposide as ligand. In vitro anticancer activity was carried out by trypan blue exclusion assay against EAC cells. DNA fragmentation studies were performed by Gel electrophoresis to identify the cause of cell death induced by these compounds. Results: Among the compounds studied for docking, 12c generated the highest docking score (13.66) and showed hydrogen bonding interactions with glycine 778 at a distance of 1.879 A˚. the compounds 12c & 12g showed the highest level of cytotoxicity with IC50 value of 0.55 μM and 0.62 μM respectively. Compounds 12c and12g were subjected to DNA fragmentation studies to identify the cause of cell death induced by these compounds. Gel electrophoresis of these compounds showed a typical feature of apoptosis ladders in agarose gel. Compound 12c was able to induce apoptosis at a concentration of about 3 μM. Conclusion: A series of bis-triazoles were synthesized targeted to DNA topoisomerase II and evaluated their In vitro cytotoxicity. The compound 12c was found to be most active and also exhibited apoptosis inducing potential

In Vivo

The study incorporates the wound healing potential of Aegle marmelos fruit pulp extract (AME) on excision, incision, and dead space wound models in rats. AME (200 mg/kg) was administered orally once daily for variable days depending on the type of wound ulcer study. AME was studied for its wound breaking strength (incision wound), rate of contraction, period of epithelization and histology of skin (excision model), and granulation tissue free radicals, antioxidants, acute inflammatory marker, and connective tissue markers and deep connective tissue histology (dead space wound). Complete wound contraction and epithelization were observed at the 20th day after treatment with AME as compared to the 24th day in control rats. Mean epithelization period and scar area were decreased while wound breaking strength was increased with AME compared with control. Granulation tissue showed increased levels of collagen determinants (33.7 to 64.4%, P<0.001) and antioxidants (13.0 to 38.8%, P<0.05 to P<0.001), whereas markers of oxidative stress (55.0 to 55.6%, P<0.001) and myeloperoxidase (21.3%, P<0.001) were decreased in AME treated group. A. marmelos seems to promote wound healing by enhancing connective tissue formation and antioxidants status with decrease in free radicals and myeloperoxidase having tissue damaging effects

Benchmarking the ability of novel compounds to inhibit SARS-CoV-2 main protease using steered molecular dynamics simulations

Background: The SARS-CoV-2 main protease (Mpro) is an attractive target in the COVID-19 drug development process. It catalyzes the polyprotein's translation from viral RNA and specifies a particular cleavage site. Due to the absence of identical cleavage specificity in human cell proteases, targeting Mpro with chemical compounds can obstruct the replication of the virus. Methods: To explore the potential binding mechanisms of 1,2,3-triazole scaffolds in comparison to co-crystallized inhibitors 11a and 11b towards Mpro, we herein utilized molecular dynamics and enhanced sampling simulation studies. Results and conclusion: All the 1,2,3-triazole scaffolds interacted with catalytic residues (Cys145 and His41) and binding pocket residues of Mpro involving Met165, Glu166, Ser144, Gln189, His163, and Met49. Furthermore, the adequate binding free energy and potential mean force of the topmost compound 3h was comparable to the experimental inhibitors 11a and 11b of Mpro. Overall, the current analysis could be beneficial in developing the SARS-CoV-2 Mpro potential inhibitors. © 2022 Elsevier Ltd5058; Department of Biotechnology, Ministry of Science and Technology, India, DBT; Indian Council of Medical Research, ICMR; Council of Scientific and Industrial Research, India, CSIR; Ministry of Education and Science of the Russian Federation, Minobrnauka: 075-15-2020-777We gratefully acknowledge to the Director, CSIR-Institute of Himalayan Bioresource Technology, Palampur for providing the facilities to carry out this work. This research received no specific grant from any funding agency. The work was carried out under the aegis of the Himalayan Centre for High-throughput Computational Biology (HiCHiCoB), a BIC supported by DBT. The CSIR support in the form of projects MLP:0201 and OLP:0043 for bioinformatics studies is highly acknowledged. R. S. expresses gratitude to the Indian Council of Medical Research, New Delhi, India for providing Senior Research Fellowship. G.V.Z. acknowledge the Ministry of Science and Higher Education of the Russian Federation within the framework of the grant agreement as government subsidies from the Federal budget in accordance with paragraph 4 of article 78.1 of the Budget Code of the Russian Federation (Moscow, October 1, 2020, No. 075-15-2020-777). This manuscript represents CSIR-IHBT communication no. 5058.We gratefully acknowledge to the Director, CSIR-Institute of Himalayan Bioresource Technology, Palampur for providing the facilities to carry out this work. This research received no specific grant from any funding agency. The work was carried out under the aegis of the Himalayan Centre for High-throughput Computational Biology (HiCHiCoB), a BIC supported by DBT. The CSIR support in the form of projects MLP:0201 and OLP:0043 for bioinformatics studies is highly acknowledged. R. S. expresses gratitude to the Indian Council of Medical Research, New Delhi, India for providing Senior Research Fellowship. G.V.Z. acknowledge the Ministry of Science and Higher Education of the Russian Federation within the framework of the grant agreement as government subsidies from the Federal budget in accordance with paragraph 4 of article 78.1 of the Budget Code of the Russian Federation (Moscow, October 1, 2020, No. 075-15-2020-777). This manuscript represents CSIR-IHBT communication no. 5058

Characterizing cognitive deficits and dementia in an aging urban population in India.

Rapid rise in the population of older adults in India will lead to the need for increased health care services related to diagnosis, management, and long-term care for those with dementia and cognitive impairment. A direct approach for service provision through memory clinics can be an effective, successful, and sustaining means of delivering specialized health care services. We have established a memory clinic in Mumbai, India by employing the diverse clinical skills available in Indian academic institutions, diagnostic and research expertise of clinicians and psychologists, and the support of the U.S. National Institutes of Health. Our project involved recruitment of patients, clinical and neuropsychological assessment, and standardized diagnostic procedures, demonstrating the feasibility of using research methods to develop a memory clinic. In this paper, we describe the development of a community-based memory clinic in urban India, including linguistic and cultural factors and present detailed results, including diagnostic characterization, on 194 subjects with various stages of cognitive deficits. Our findings support the feasibility of developing a memory clinic in a public hospital and successful use of research diagnostic criteria to categorize cognitive deficits observed in this population, which may be used to inform the development of other such clinics