26 research outputs found

    Characterization of some naphthalene using bacteria isolated from contaminated Cooum Riverine sediment of the Bay of Bengal (India)

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    Microorganisms capable of using naphthalene as the sole carbon source were isolated from the contaminated sediment of Cooum River. Twenty one isolates were recovered and nine were selected for enrichment due to differences in their morphological characteristics. Out of nine isolates, only four (NS3-SRMND14B, NS14-SRMND14A, NS15-SRMND14D and NS19- -SRMND14E) were capable of completely utilizing naphthalene as the sole source of carbon in carbon free minimal medium (CFMM) supplemented with naphthalene. 16S rDNA sequencing showed that all the four isolates were distantly related to each other and belongs to Bacillus sp. (NS3-SRMND14B), Pseudomonas sp. (NS14-SRMND14A), Cellulosimicrobium sp. (NS15-SRMND14D) and Sphingobacterium sp. (NS19-SRMND14E), respectively. Based on the phylogenetic analysis of 16S rDNA sequencing, the isolate Sphingobacterium sp. (NS19-SRMND14E) has been identified as novel strain. Polymerase chain reaction (PCR) technique showed the presence of naphthalene dioxygenase (ndo) gene responsible for naphthalene degradation only in the Pseudomonas sp. (NS14-SRMND14A). We observed that the ndo gene is not the only gene responsible for naphthalene degradation. Based on our study, the indigenous microorganisms isolated from Cooum Riverine sediment can be used for bioremediation of the polluted sediment along the Bay of Bengal.Supplementary material: [http://cherry.chem.bg.ac.rs/handle/123456789/3840

    Migration of forgotten stent into renal pelvis

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    Stent migration is a well recognized complication of forgotten stents, but migration into the renal pelvis is rarely documented. We present a case of migration and coiling of a forgotten stent in the renal pelvis, and discuss briefly, the etiological factors for the phenomenon and associated problems in management

    ANTI-METHICILLIN RESISTANT STAPHYLOCOCCUS AUREUS POTENTIAL OF PHYTOCHEMICALS IN TERMINALIA CATAPPA AND THEIR PROPOSED IN SILICO MECHANISM OF ACTION: Anti-MRSA potential of Terminalia catappa

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    Objective: The objective of this study was to investigate the antibacterial potential of leaves of this Terminalia catappa and identify the mechanism of action for those phytochemicals present in this leaves. Methods: Phytochemicals were extracted using maceration and the extracts were analyzed using gas chromatography–mass spectrometry (GC-MS) to identify the chemical structure. Antibacterial potential was evaluated using agar well diffusion. The phytochemicals were subjected to in silico protein–ligand docking study to identify the mechanism of action. Results: In vitro antibacterial study demonstrated that the ethanol extract of the leaves has significant antibacterial activity against Staphylococcus aureus (SA) and methicillin-resistant SA (MRSA) with a zone of inhibition of 16 mm and 18 mm, respectively, at a concentration of 2 mg/ml. The chloroform and hexane extracts of the leaves did not demonstrate any significant activity. Based on GC-MS analysis and literature review, 12 phytochemicals were identified to be present in the ethanol extract of the T. catappa leaves. These molecules were subjected to in silico protein–ligand docking study against common drug target proteins of SA and MRSA. Among the studied ligands, granatin A demonstrated the highest significance to inhibit topoisomerase IV with a binding energy of −11.3 kcal/mol and produced 7 hydrogen bonds, followed by punicalin with −10.7 kcal/mol binding energy toward penicillin-binding protein 2a with 6 hydrogen bonds. Conclusion: Phytochemicals of T. catappa demonstrates significant drug ability potential against drug-resistant MRSA pathogen and demands further investigation on their individual activity and mechanism

    Testicular leiomyosarcoma with metastasis

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    Primary leiomyosarcoma of testis is a rare entity with few cases reported in literature. Primary leiomyosarcoma of testis usually occurs following radiotherapy or long-term anabolic steroid use. Without these predisposing factors, its occurrence is rare. In the present study, we present a rare case of primary leiomyosarcoma of testis occurring in an elderly patient, with an unusual presentation mimicking epididymo-orchitis and metastasis eight months following high inguinal orchidectomy

    Eyeball simulator for extraocular muscles

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    Learning about human eye movements broadens our comprehension of the visuomotor system and aids in the effective management of strabismus. One's clinical practice is improved by a dynamic simulation of human eye movements using physical models of the extraocular muscles (EOMs). We use our eyeball model to teach the basics of strabismus to undergraduate students and ophthalmology residents. In Listing's plane, extraocular movements of each muscle and the angle demonstration are being used to familiarize students with their knowledge. The degree of the residents' understanding of strabismus is significantly influenced by the eyeball strabismus simulator. This model is an inexpensive, Do It Yourself (DIY) model that is simple to build

    A mini review on immune role of chemokines and its receptors in snakehead murrel Channa striatus

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    Chemokines are ubiquitous cytokine molecules involved in migration of cells during inflammation and normal physiological processes. Though the study on chemokines in mammalian species like humans have been extensively studied, characterization of chemokines in teleost fishes is still in the early stage. The present review provides an overview of chemokines and its receptors in a teleost fish, Channa striatus. C. striatus is an air breathing freshwater carnivore, which has enormous economic importance. This species is affected by an oomycete fungus, Aphanomyces invadans and a Gram negative bacteria Aeromonas hydrophila is known to cause secondary infection. These pathogens impose immune changes in the host organism, which in turn mounts several immune responses. Of these, the role of cytokines in the immune response is immense, due to their involvement in several activities of inflammation such as cell trafficking to the site of inflammation and antigen presentation. Given that importance, chemokines in fishes do have significant role in the immunological and other physiological functions of the organism, hence there is a need to understand the characteristics, activities and performace of these small molecules in details
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