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Article: Effect of parenteral endotoxin administration on the immuno-haematological responses of catfish, Heteropneustes fossilis

Nayak, S.K. / Jahan, N. / Pattnaik, S.

Fish and shellfish immunology reports. 2021 Dec., v. 2

2021

Abstract: Endotoxin, the outer cell wall membrane lipopolysaccharide component of the Gram-negative bacteria is a factor responsible for a number of complications/disorders and plays important role in the associated with pathophysiological complications and ... ...

Abstract	Endotoxin, the outer cell wall membrane lipopolysaccharide component of the Gram-negative bacteria is a factor responsible for a number of complications/disorders and plays important role in the associated with pathophysiological complications and pathogenesis of many diseases in animals. Unlike higher animals which are extremely sensitive to endotoxin, fish are found to be resistant to endotoxic shock and earlier studies though limited have demonstrated the patho-physiological, immuno-endocrinological and immuno-neurological effects of LPS/endotoxin in aquatic animals including fish. Herein in the present investigation, the effect of pure endotoxin on immuno-haematological parameters of stinging catfish, Heteropneustes fossilis ranging from 50–60 g was studied by intraperitoneally injecting 0.1, 0.05 and 0.01 mg endotoxin per fish. H. fossilis yearlings were found to resist the endotoxin concentration up to 0.1 mg without any mortality. While, no change in immune parameters was recorded in stinging catfish injected with low dose of endotoxin (0.01 mg), most of the immune parameters were found to be significantly elevated in catfish injected with 0.05 mg endotoxin. Different serum and immune parameters like protein, globulin, lysozyme, respiratory burst activity, myeloperoxidase activity, natural agglutination titre were found to be significantly high (p < 0.01) at a dose of 0.05 mg endotoxin per fish. On the contrary, most of these parameters were decreased at high dose i.e., 0.1 mg endotoxin per fish, thereby indicating the immuno-suppressive effect of the endotoxin. The findings of the modulation of innate immunity also corroborated with the results of Aeromonas hydrophila pathogen challenge study with highest percent of mortality in group injected with 0.1 mg endotoxin per fish and least percentage in group injected with 0.05 mg endotoxin per fish.
Keywords	Aeromonas hydrophila ; Heteropneustes fossilis ; agglutination ; blood serum ; catfish ; cell walls ; endotoxins ; globulins ; innate immunity ; lipopolysaccharides ; lysozyme ; mortality ; myeloperoxidase ; pathogenesis ; pathogens ; respiratory burst ; shellfish
Language	English
Dates of publication	2021-12
Publishing place	Elsevier Ltd
Document type	Article
ISSN	2667-0119
DOI	10.1016/j.fsirep.2021.100022
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Effect of parenteral endotoxin administration on the immuno-haematological responses of catfish

Nayak, S K / Jahan, N / Pattnaik, S

Fish and shellfish Immunology reports

2021 Volume 2, Page(s) 100022

Abstract	Endotoxin, the outer cell wall membrane lipopolysaccharide component of the Gram-negative bacteria is a factor responsible for a number of complications/disorders and plays important role in the associated with pathophysiological complications and pathogenesis of many diseases in animals. Unlike higher animals which are extremely sensitive to endotoxin, fish are found to be resistant to endotoxic shock and earlier studies though limited have demonstrated the patho-physiological, immuno-endocrinological and immuno-neurological effects of LPS/endotoxin in aquatic animals including fish. Herein in the present investigation, the effect of pure endotoxin on immuno-haematological parameters of stinging catfish
Language	English
Publishing date	2021-08-29
Publishing country	England
Document type	Journal Article
ISSN	2667-0119
ISSN (online)	2667-0119
DOI	10.1016/j.fsirep.2021.100022
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Article: Biomedical waste plastic: bacteria, disinfection and recycling technologies-a comprehensive review.

Sahoo, S / Rathod, W / Vardikar, H / Biswal, M / Mohanty, S / Nayak, S K

International journal of environmental science and technology : IJEST

2023 , Page(s) 1–18

Language	English
Publishing date	2023-05-17
Publishing country	Iran
Document type	Journal Article ; Review
ZDB-ID	2230399-6
ISSN	1735-2630 ; 1735-1472
ISSN (online)	1735-2630
ISSN	1735-1472
DOI	10.1007/s13762-023-04975-w
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Article ; Online: Experimental analyzing the static puncture resistance performance of shear thickening fluid impregnated polypropylene hybrid composite target structures for armour application

Deepak, S. / Thirumalaikumarasamy, D. / Ashokkumar, M. / Nayak, S. K.

The Journal of The Textile Institute. 2022 Feb. 3, v. 114, no. 3 p.351-363

2022

Abstract: The challenges of today’s protective material developers' requirements for body armour target structure design, strength, stiffness, and light weight structures have historically come from composite structures having high cost, complex manufacturing, and ...

Abstract	The challenges of today’s protective material developers' requirements for body armour target structure design, strength, stiffness, and light weight structures have historically come from composite structures having high cost, complex manufacturing, and time-consuming process. Hence, there is a need to identify suitable alternate materials with reliable composites and essential design requirements for high impact armour structures. At present, hybrid composite structures are increasingly utilized in armour structure developments because they offer quick adoption to produce low cost, high impact strength, and a methodology for easy and quick manufacturing process without compromising the performance of traditional composite structures. This experimental analysis reports that the prepared hybrid composite target structures are composed of woven polypropylene fabric impregnated with single, double, and triple layers with a prepared shear thickening fluid (STF) concentration (50 vol% silica dispersed in polyethylene glycol 600 g/mol) used as a core layer in this structure and a neat/silica gel coated aluminum face sheet is used as the skin material. The prepared STF is characterized through rheological analysis exhibits shear thickening behavior reveals that extensively depends on silica particle morphology, volume fraction, and particle size distribution. The prepared hybrid composite target structure test results demonstrate a significant enhancement in tensile strength, modulus, better peel resistance properties, and puncture resistance evaluated in different geometry of projectiles like flat, hemispherical, elliptical, and conical indentor penetration velocity at 500 mm/min have been performed to demonstrate the improvements in the target structure. It enhances the performance layer thickness increases with increasing puncture resistance for all indentors sequently identified and penetration damage of target structures varied with respect to indentor nose head surface area of contacts.
Keywords	aluminum ; fabrics ; geometry ; head ; impact strength ; nose ; particle size distribution ; polyethylene glycol ; polypropylenes ; silica gel ; surface area ; tensile strength ; Shear thickening fluid ; hybrid composite ; polypropylene fabric ; standard indentors
Language	English
Dates of publication	2022-0203
Size	p. 351-363.
Publishing place	Taylor & Francis
Document type	Article ; Online
ISSN	1754-2340
DOI	10.1080/00405000.2022.2037230
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Article ; Online: Preparation of hydrophobic epoxy-polydimethylsiloxane-graphene oxide nanocomposite coatings for antifouling application.

Verma, Shatakshi / Mohanty, Smita / Nayak, S K

Soft matter

2020 Volume 16, Issue 5, Page(s) 1211–1226

Abstract: Epoxy-polydimethylsiloxane-graphene oxide (EPG) nanocomposite coatings were successfully developed by loading different wt% of graphene oxide nanosheets (GNs) into an epoxy-hydroxy-terminated-polydimethylsiloxane (EP-hPD) matrix via a facile in situ ... ...

Abstract	Epoxy-polydimethylsiloxane-graphene oxide (EPG) nanocomposite coatings were successfully developed by loading different wt% of graphene oxide nanosheets (GNs) into an epoxy-hydroxy-terminated-polydimethylsiloxane (EP-hPD) matrix via a facile in situ preparation technique. The inclusion of GNs into EPN led to an increase in modulus of elasticity and tensile strength up to 1570.46 MPa and 31.54 MPa, respectively, in the case of 1 wt% loading of GNs in the EP-hPD matrix. Also, an increase in the water contact angle from 90.1° to 115.2°, 104.5° and 101.7° was discerned at 1, 3 and 5 wt% loadings of GNs respectively. Taber abrasion results demonstrated a decrease in abrasion loss by 33.3% at 1 wt% loading of GNs in comparison to the unreinforced coating. An improvement in the glass transition temperature (T
Language	English
Publishing date	2020-01-03
Publishing country	England
Document type	Journal Article
ZDB-ID	2191476-X
ISSN	1744-6848 ; 1744-683X
ISSN (online)	1744-6848
ISSN	1744-683X
DOI	10.1039/c9sm01952a
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Article: A unique bacterial and archaeal diversity make mangrove a green production system compared to rice in wetland ecology: A metagenomic approach

Padhy, S.R / Bhattacharyya, P / Nayak, S.K / Dash, P.K / Mohapatra, T

Science of the total environment. 2021 Aug. 10, v. 781

2021

Abstract: Mangrove provides significant ecosystem services, however, 40% of tropical mangrove was lost in last century due to climate change induced sea-level rise and anthropogenic activities. Sundarban-India, the largest contiguous mangrove of the world lost 10 ... ...

Abstract	Mangrove provides significant ecosystem services, however, 40% of tropical mangrove was lost in last century due to climate change induced sea-level rise and anthropogenic activities. Sundarban-India, the largest contiguous mangrove of the world lost 10.5% of its green during 1930–2013 which primarily converted to rice-based systems. Presently degraded mangrove and adjacent rice ecology in Sundarban-India placed side by side and create typical ecology which is distinct in nature in respect to soil physicochemical properties, carbon dynamics, and microbial diversities. We investigated the structural and functional diversities of bacteria and archaea through Illumina MiSeq metagenomic analysis using V3–V4 region of 16S rRNA gene approach that drives greenhouse gases emission and carbon-pools. Remote sensing-data base were used to select the sites for collecting the soil and gas samples. The methane and nitrous oxide emissions were lower in mangrove (−0.04 mg m⁻² h⁻¹ and −52.8 μg m⁻² h⁻¹) than rice (0.26 mg m⁻² h⁻¹ and 44.7 μg m⁻² h⁻¹) due to less availability of carbon-substrates and higher sulphate availability (85.8% more than rice). The soil labile carbon-pools were more in mangrove, but lower microbial activities were noticed due to stress conditions. A unique microbial feature indicated by higher methanotrophs: methanogens (11.2), sulphur reducing bacteria (SRB): methanogens (93.2) ratios and lower functional diversity (7.5%) in mangrove than rice. These could be the key drivers of lower global warming potential (GWP) in mangrove that make it a green production system. Therefore, labile carbon build-up potential (38%) with less GWP (63%) even in degraded-mangrove makes it a clean production system than wetland-rice that has high potential to climate change mitigation. The whole genome metagenomic analysis would be the future research priority to identify the predominant enzymatic pathways which govern the methanogenesis and methanotrophy in this system.
Keywords	Archaea ; climate change ; ecosystems ; environment ; functional diversity ; genes ; greenhouses ; labile carbon ; metagenomics ; methane ; methane production ; methanogens ; methanotrophs ; nitrous oxide ; rice ; sea level ; sulfates ; sulfur ; wetlands
Language	English
Dates of publication	2021-0810
Publishing place	Elsevier B.V.
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2021.146713
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Article ; Online: Tuning up the photovoltaic performances upon the utility of diketopyrrolopyrrole in PEO-based gel polymer electrolytes.

Kumar, Sanath / Panigrahi, Pranshula / Mohanty, S / Nayak, S K / Palai, Akshaya Kumar

Dalton transactions (Cambridge, England : 2003)

2021 Volume 50, Issue 22, Page(s) 7647–7655

Abstract: The role of diketopyrrolopyrrole (DPP-H) as an additive on the ionic conductivity of poly(ethylene oxide) (PEO)-based gel polymer electrolytes (GPE) was studied for DSSC applications. The pure PEO/PC/KI/TPAI/I2 GPE was prepared with a mixture of ... ...

Abstract	The role of diketopyrrolopyrrole (DPP-H) as an additive on the ionic conductivity of poly(ethylene oxide) (PEO)-based gel polymer electrolytes (GPE) was studied for DSSC applications. The pure PEO/PC/KI/TPAI/I2 GPE was prepared with a mixture of propylene carbonate (PC) as a non-volatile plasticizer and iodide salts, such as potassium iodide (KI), tetrapropylammonium iodide (TPAI) and iodine (I2), together with PEO. The modified GPEs were prepared with different weight percentage (wt%) ratios (0.5%, 0.75%, 1% and 1.25%) of DPP-H using acetonitrile as a solvent. The polymer gel electrolytes were characterized by X-ray diffractometer (XRD) and Fourier transform infrared spectroscopy (FTIR), and the electrochemical properties were analyzed to relate the nature of the polymer and iodine ion conducting properties. The pure PEO/PC/TPAI/KI/I2 electrolyte exhibited an ionic conductivity value of 0.084 mS·cm-1 at room temperature. Upon the optimized addition of DPP-H (0.75 wt%), the ionic conductivity was found to be improved to a maximum value of 0.393 mS·cm-1, and the highest diffusion coefficient of 1.02 × 10-6 cm2 s-1 was observed. The optimized GPEs photovoltaic characterization studies showed higher power conversion efficiency (PCE) of 6.69% for DSSC under light illumination intensity of 100 mW cm-2. The same was compared with pure electrolyte, which delivered PCE of 4.39%. To gain an in-depth understanding of the interfacial resistance of the fabricated devices, the electron lifetime and transient photo response was analyzed. These above studies showed that prepared GPE could be an efficient alternative for traditional DSSCs with liquid electrolyte.
Language	English
Publishing date	2021-05-11
Publishing country	England
Document type	Journal Article
ZDB-ID	1472887-4
ISSN	1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
ISSN (online)	1477-9234 ; 1364-5447
ISSN	0300-9246 ; 1477-9226
DOI	10.1039/d1dt00585e
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Article ; Online: A unique bacterial and archaeal diversity make mangrove a green production system compared to rice in wetland ecology: A metagenomic approach.

Padhy, S R / Bhattacharyya, P / Nayak, S K / Dash, P K / Mohapatra, T

The Science of the total environment

2021 Volume 781, Page(s) 146713

Abstract	Mangrove provides significant ecosystem services, however, 40% of tropical mangrove was lost in last century due to climate change induced sea-level rise and anthropogenic activities. Sundarban-India, the largest contiguous mangrove of the world lost 10.5% of its green during 1930-2013 which primarily converted to rice-based systems. Presently degraded mangrove and adjacent rice ecology in Sundarban-India placed side by side and create typical ecology which is distinct in nature in respect to soil physicochemical properties, carbon dynamics, and microbial diversities. We investigated the structural and functional diversities of bacteria and archaea through Illumina MiSeq metagenomic analysis using V3-V4 region of 16S rRNA gene approach that drives greenhouse gases emission and carbon-pools. Remote sensing-data base were used to select the sites for collecting the soil and gas samples. The methane and nitrous oxide emissions were lower in mangrove (-0.04 mg m
MeSH term(s)	Agriculture ; Archaea/genetics ; Bacteria/genetics ; Ecosystem ; India ; Methane/analysis ; Nitrous Oxide/analysis ; Oryza ; RNA, Ribosomal, 16S/genetics ; Soil ; Wetlands
Chemical Substances	RNA, Ribosomal, 16S ; Soil ; Nitrous Oxide (K50XQU1029) ; Methane (OP0UW79H66)
Language	English
Publishing date	2021-03-25
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2021.146713
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Article ; Online: Probiotics and immunity: a fish perspective.

Nayak, S K

Fish & shellfish immunology

2010 Volume 29, Issue 1, Page(s) 2–14

Abstract: Probiotics are usually live microorganisms which when administered in adequate amounts confer a health benefits on host. Nowadays, probiotics are also becoming an integral part of the aquaculture practices to obtain high production. The common probiotics ...

Abstract	Probiotics are usually live microorganisms which when administered in adequate amounts confer a health benefits on host. Nowadays, probiotics are also becoming an integral part of the aquaculture practices to obtain high production. The common probiotics that are used for aquaculture practices include Lactobacillus, Lactococcus, Leuconostoc, Enterococcus, Carnobacterium, Shewanella, Bacillus, Aeromonas, Vibrio, Enterobacter, Pseudomonas, Clostridium, and Saccharomyces species. The involvement of probiotics in nutrition, disease resistance and other beneficial activities in fish has proven beyond any doubt. Among the numerous health benefits attributed to probiotics, modulation of immune system is one of the most commonly purported benefits of the probiotics and their potency to stimulate the systemic and local immunity under in vitro and in vivo conditions is noteworthy. Different probiotics either monospecies or multispecies supplementation can eventually elevate phagocytic, lysozyme, complement, respiratory burst activity as well as expression of various cytokines in fish. Similarly, probiotics can stimulate the gut immune system of fish with marked increase in the number of Ig(+) cells and acidophilic granulocytes. Furthermore, mono-bacterial association studies (with non-probiotic bacterial strains) in gnotobiotic fish also indicate the up-regulation of various immune related genes. Though the exact mode of action of probiotics is yet to be established in any animal including fish, probiotics often exert host specific and strain specific differences in their activities. Various factors like source, type, dose and duration of supplementation of probiotics can significantly affect the immunomodulatory activity of probiotics. The review is therefore, aiming to highlight the immunomodulatory activity of probiotics and also to evaluate the factors that regulate for the optimum induction of immune responses in fish.
MeSH term(s)	Animals ; Aquaculture/methods ; Complement System Proteins/immunology ; Cytokines/immunology ; Fishes/immunology ; Gastrointestinal Tract/immunology ; Muramidase/immunology ; Peroxidase/immunology ; Phagocytosis/immunology ; Probiotics/pharmacology ; Respiratory Burst/immunology
Chemical Substances	Cytokines ; Complement System Proteins (9007-36-7) ; Peroxidase (EC 1.11.1.7) ; Muramidase (EC 3.2.1.17)
Language	English
Publishing date	2010-07
Publishing country	England
Document type	Journal Article ; Review
ZDB-ID	1067738-0
ISSN	1095-9947 ; 1050-4648
ISSN (online)	1095-9947
ISSN	1050-4648
DOI	10.1016/j.fsi.2010.02.017
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Article: Production potential of soybean based cropping sequence under resource conservation technologies

Nayak, S.K. / Narkhede, W.N. / Sutar, V.K. / Gokhale, D.N.

Indian journal of ecology. 2020 Dec., v. 47, no. 4

2020

Abstract: The field investigation was undertaken during kharif and rabi season of 2014-15 and 2015-16 at VNMKV, Parbhani to study effect of tillage and nutrient levels on soybean based cropping sequence. Treatment consists of twelve treatment combinations ... ...

Abstract	The field investigation was undertaken during kharif and rabi season of 2014-15 and 2015-16 at VNMKV, Parbhani to study effect of tillage and nutrient levels on soybean based cropping sequence. Treatment consists of twelve treatment combinations comprising two tillage practices (minimum tillage, conventional tillage) and two cropping systems (soybean-rabi sorghum, soybean-wheat) in main plot, three levels of nutrients (75, 100 and 125 per cent RDF) in sub plot for soybean in kharif and after that for rabi sorghum and wheat in rabi season were assigned in a split-split plot design. Practice of conventional tillage with 125 RDF applications to soybean, rabi sorghum and wheat improved the yields, soybean equivalent yield, production efficiency of soybean based cropping system. Soybean-wheat cropping systems augmented the soybean equivalent yield and production efficiency of soybean based cropping system while land use efficiency was higher in soybean-rabi sorghum cropping systems.
Keywords	conventional tillage ; ecology ; experimental design ; land use ; minimum tillage ; soybeans ; wheat
Language	English
Dates of publication	2020-12
Size	p. 1125-1129.
Publishing place	Indian Ecological Society
Document type	Article
ZDB-ID	193796-0
ISSN	0304-5250
ISSN	0304-5250
Database	NAL-Catalogue (AGRICOLA)

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