19 results on '"Sanghvi G"'
Search Results
2. Effect of vermicompost on soil quality parameters for different land use patterns.
- Author
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Jayaswal, K, Christian, J, Singh, N K, Padhiyar, H, Yadav, M, and Sanghvi, G
- Published
- 2023
- Full Text
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3. DAS Acquisition In A Matured Field During 4D: A Challenging Initiative With Multiple Objectives
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Sanghvi, G.., additional, Le-Roch, J. F., additional, Fernagu, J.., additional, Elazabi, S.., additional, Al-Naimi, A.., additional, Parker, T.., additional, Dathan, S.., additional, Toguem, E.., additional, Lemetayer, p.., additional, and Allanic, Ch.., additional
- Published
- 2015
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4. The Ravva 4D Seismic Study - A Multidisciplinary Approach for Identification of Bypassed Oil
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Reddy, K., primary, McClenaghan, R., additional, Saikia, K., additional, Mishra, S., additional, G. Rao, C., additional, Gupta, M., additional, Joysula, S., additional, Sanghvi, G., additional, and Shankar, V., additional
- Published
- 2013
- Full Text
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5. ANATOMICAL CHARACTERISATION OF TEAK (TECTONA GRANDIS) WOOD DECAYED BY FUNGUS CHRYSOSPORIUM ASPERATUM.
- Author
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Sanghvi, G. V., Koyani, R. D., and Rajp, K. S.
- Subjects
- *
WOOD anatomy , *WOOD decay , *HYPHOMYCETES , *FUNGAL colonies , *TEAK , *XYLEM - Abstract
Teak wood logs are most often invaded by Chrysosporium asperatum. The extent of damage caused by it within a given period was investigated by in-vitro decay test. Sound wood blocks of Tectona grandis inoculated with C. asperatum showed no appreciable weight loss in the early phase of fungal colonisation but registered a 34-38% weight loss within three months. At the outset, fungal mycelia entered into wood tissue through vessels and xylem rays, invading all cell types by ramifying through pits on lateral walls. Fungal invasion commenced from the cell corners and the middle lamellae of the fibre wall, without any pronounced effect on the primary and secondary wall layers. Xylem cells were separated due to dissolution of middle lamella in the early stage, but in the advanced stages of decay all cell types showed formation of erosion channels and bore holes. In the advanced stage of infection, vessels were deformed due to explicit degeneration and eventually collapsed due to loss of rigidity. Xylem rays were more vulnerable to degradation than axial elements. Structural alterations induced in response to fungal invasion are described in the paper. [ABSTRACT FROM AUTHOR]
- Published
- 2013
6. From Gut to Brain: The Impact of Short-Chain Fatty Acids on Brain Cancer.
- Author
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Saadh MJ, Allela OQB, Kareem RA, Sanghvi G, Menon SV, Sharma P, Tomar BS, Sharma A, Sameer HN, Hamad AK, Athab ZH, and Adil M
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- Humans, Animals, Glioma drug therapy, Dietary Fiber therapeutic use, Butyrates therapeutic use, Butyrates pharmacology, Brain drug effects, Brain metabolism, Apoptosis drug effects, Gastrointestinal Microbiome drug effects, Fatty Acids, Volatile therapeutic use, Fatty Acids, Volatile physiology, Fatty Acids, Volatile metabolism, Brain Neoplasms drug therapy, Tumor Microenvironment drug effects, Brain-Gut Axis physiology, Blood-Brain Barrier drug effects
- Abstract
The primary source of short-chain fatty acids (SCFAs), now recognized as critical mediators of host health, particularly in the context of neurobiology and cancer development, is the gut microbiota's fermentation of dietary fibers. Recent research highlights the complex influence of SCFAs, such as acetate, propionate, and butyrate, on brain cancer progression. These SCFAs impact immune modulation and the tumor microenvironment, particularly in brain tumors like glioma. They play a critical role in regulating cellular processes, including apoptosis, cell differentiation, and inflammation. Moreover, studies have linked SCFAs to maintaining the integrity of the blood-brain barrier (BBB), suggesting a protective role in preventing tumor infiltration and enhancing anti-tumor immunity. As our understanding of the gut-brain axis deepens, it becomes increasingly important to investigate SCFAs' therapeutic potential in brain cancer management. Looking into how SCFAs affect brain tumor cells and the environment around them could lead to new ways to prevent and treat these diseases, which could lead to better outcomes for people who are dealing with these challenging cancers., Competing Interests: Declarations. Competing Interests: The authors declare no competing interests., (© 2025. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
- Published
- 2025
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7. Insights into the biogenic production of nanocomposites of NiO-chitosan for wastewater remediation.
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Sharma K, Lal B, Sanghvi G, Padmapriya G, Ahmed J, Sharma R, Chahar M, Singh M, Prasad GVS, Bisht YS, Suman, and Kumari A
- Abstract
In our study, we have tried to enhance the biological qualities of nickel oxide nanoparticles and nanocomposites which were prepared using the extract of Aegle marmelos tree leaves and chitosan biopolymer. For in-depth study of the fabricated samples, numerous physiochemical approaches were utilized. The analysis used consists of field emission scanning electron microscopy with energy dispersive X-ray analysis and photoluminescence, X-ray diffraction, UV-visible spectroscopy, and Fourier transform infrared spectroscopy. The crystallite size was measured to be about 9.36 nm and 39.5 nm for Ni-nanoparticles and Ni-nanocomposite respectively. Both, the Ni-nanoparticles and Ni-nanocomposites demonstrated effective antifungal properties toward the fungus strain of Sclerotinia sclerotiorum. The samples showed the strongest antifungal efficacy against Sclerotinia sclerotiorum at doses of 100 and 150 mg. The prepared samples also showed good photocatalytic degradation efficiencies for the commercial Rhodamine B dye. The synergistic features that have been found indicate that these bio-functionalized NiO-chitosan NCs may be suitable for the treatment of industrial wastewater and biomedical applications., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2025 Elsevier B.V. All rights reserved.)
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- 2025
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8. Using hardystonite as a biomaterial in biomedical and bone tissue engineering applications.
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Wang H, Sanghvi G, Arefpour A, Alkhayyat A, Soheily A, Jabbarzare S, Salahshour S, Alizadeh A, and Baghaei S
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- Humans, Animals, Calcium Compounds chemistry, Ceramics chemistry, Bone Substitutes chemistry, Bone Substitutes therapeutic use, Tissue Engineering methods, Silicates chemistry, Silicates therapeutic use, Biocompatible Materials chemistry, Biocompatible Materials therapeutic use, Bone and Bones
- Abstract
Widespread adoption for substitutes of artificial bone grafts based on proper bioceramics has been generated in recent years. Among them, calcium-silicate-based bioceramics, which possess osteoconductive properties and can directly attach to biological organs, have attracted substantial attention for broad ranges of applications in bone tissue engineering. Approaches exist for a novel strategy to promote the drawbacks of bioceramics such as the incorporation of Zn
2+ , Mg2+ , and Zr4+ ions into calcium-silicate networks, and the improvement of their physical, mechanical, and biological properties. Recently, hardystonite (Ca2 ZnSi2 O7 ) bioceramics, as one of the most proper calcium-silicate-based bioceramics, has presented excellent biocompatibility, bioactivity, and interaction. Due to its physical, mechanical, and biological behaviors and ability to be shaped utilizing a variety of fabrication techniques, hardystonite possesses the potential to be applied in biomedical and tissue engineering, mainly bone tissue engineering. A notable potential exists for the newly developed bioceramics to help therapies supply clinical outputs. The promising review paper has been presented by considering major aims to summarize and discuss the most applicable studies carried out for its physical, mechanical, and biological behaviors., (Copyright © 2024 Elsevier Ltd. All rights reserved.)- Published
- 2024
- Full Text
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9. lncRNA-mediated immune system dysregulation in RIF; a comprehensive insight into immunological modifications and signaling pathways' dysregulation.
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Altoum AA, Oghenemaro EF, Pallathadka H, Sanghvi G, Hjazi A, Abbot V, Kumar MR, Sharma R, Zwamel AH, and Taha ZA
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- Humans, Female, Pregnancy, Animals, Immune System immunology, Immune System metabolism, Fertilization in Vitro, Endometrium immunology, Endometrium metabolism, Endometrium pathology, Embryo Transfer, Gene Expression Regulation, Immunomodulation, Inflammation immunology, Inflammation genetics, RNA, Long Noncoding genetics, Signal Transduction, Embryo Implantation immunology, Embryo Implantation genetics
- Abstract
The initial stage of biological pregnancy is referred to as implantation, during which the interaction between the endometrium and the fetus is crucial for successful implantation. Around 10% of couples undergoing in vitro fertilization and embryo transfer encounter recurrent implantation failure (RIF), a clinical condition characterized by the absence of implantation after multiple embryo transfers. It is believed that implantation failure may be caused by inadequate or excessive endometrial inflammatory responses during the implantation window, as the female immune system plays a complex role in regulating endometrial receptivity and embryo implantation. Recent approaches to enhance the likelihood of pregnancy in RIF patients have focused on modifying the mother's immune response during implantation by regulating inflammation. Long non-coding RNAs (lncRNAs) play a significant role in gene transcription during the inflammatory response. Current research suggests that dysfunctional lncRNAs are linked to various human disorders, such as cancer, diabetes, allergies, asthma, and inflammatory bowel disease. These non-coding RNAs are crucial for immune functions as they control protein interactions or the ability of RNA and DNA to form complexes, which are involved in differentiation, cell migration, and the production of inflammatory mediators. Given the apparent involvement of the immune system in RIF and the modulatory effect of lncRNAs on the immune system, this review aims to delve into the role of lncRNAs in immune system modulation and their potential contribution to RIF., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 American Society for Histocompatibility and Immunogenetics. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
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10. Existing status and future advancements of adulteration detection techniques in herbal products.
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Ibrahim M, Detroja A, Sheth BP, Bhadja P, Sanghvi G, and Bishoyi AK
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- Chromatography, High Pressure Liquid, Mass Spectrometry, Plant Extracts, Clustered Regularly Interspaced Short Palindromic Repeats, Metabolomics
- Abstract
Background: Herbal products have been commonly used all over the world for centuries. Its products have gained remarkable acceptance as therapeutic agents for a variety of disorders. However, following recent research disclosing discrepancies between labeling and actual components of herbal products, there is growing concern about the efficacy, quality and safety of the products. The admixture and adulteration of herbal medicinal products pose a risk of serious health compromise and the well-being of the consumers. To prevent adulteration in raw ingredients and final herbal products, it is necessary to use approaches to assess both genomes as well as metabolomics of the products; this offers quality assurance in terms of product identification and purity. The combinations of molecular and analytical methods are inevitable for thorough verification and quality control of herbal medicine., Methods and Results: This review discusses the combination of DNA barcoding, DNA metabarcoding, mass spectroscopy as well as HPLC for the authentication of herbal medicine and determination of the level of adulteration. It also discusses the roles of PCR and real-time PCR techniques in validating and ensuring the quality, purity and identity of the herbal products., Conclusions: In conclusion, each technique has its own pros and cons, but the cumulative of both the chemical and molecular methods is proven to be the best strategy for adulteration detection. Moreover, CRISPR diagnosis tools equipped with multiplexing techniques may be implemented for screening adulteration from herbal drugs, this will play a crucial role in herbal product authentication in the future., (© 2024. The Author(s), under exclusive licence to Springer Nature B.V.)
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- 2024
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11. Fate of pesticides in agricultural runoff treatment systems: Occurrence, impacts and technological progress.
- Author
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Singh NK, Sanghvi G, Yadav M, Padhiyar H, Christian J, and Singh V
- Abstract
The levels of pesticides in air, water, and soil are gradually increasing due to its inappropriate management. In particular, agricultural runoff inflicts the damages on the ecosystem and human health at massive scale. Present study summarizes 70 studies in which investigations on removal or treatment of pesticides/insecticides/herbicides are reported. A bibliometric analysis was also done to understand the recent research trends through the analysis of 2218 publications. The specific objectives of this study are as follows: i) to inventorize the characteristics details of agriculture runoff and analyzing the occurrence and impacts of pesticides, ii) analyzing the role and interaction of pesticides in different environmental segments, iii) investigating the fate of pesticides in agriculture runoff treatment systems, iv) summarizing the experiences and findings of most commonly technology deployed for pesticides remediation in agriculture runoff including target pesticide(s), specifications, configuration of technological intervention. Among the reported technologies for pesticide treatment in agriculture runoff, constructed wetland was at the top followed by algal or photobioreactor. Among various advanced oxidation processes, photo Fenton method is mainly used for pesticides remediation such as triazine, methyl parathion, fenuron and diuron. Algal bioreactors are extensively used for a wide range of pesticides treatment including 2,4-Dichlorophenoxyacetic acid, 2-methyl-4-chlorophenoxyacetic acid, alachlor, diuron, chlorpyrifos, endosulfan, and imidacloprid; especially at lower hydraulic retention time of 2-6 h. This study highlights that hybrid approaches can offers potential opportunities for effective removal of pesticides in a more viable manner., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Inc. All rights reserved.)
- Published
- 2023
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12. The current status of phage therapy and its advancement towards establishing standard antimicrobials for combating multi drug-resistant bacterial pathogens.
- Author
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Ali Y, Inusa I, Sanghvi G, Mandaliya VB, and Bishoyi AK
- Subjects
- Humans, Bacteria genetics, Gene Editing methods, Anti-Bacterial Agents pharmacology, Phage Therapy methods, Bacteriophages genetics
- Abstract
Phage therapy; a revived antimicrobial weapon, has great therapeutic advantages with the main ones being its ability to eradicate multidrug-resistant pathogens as well as selective toxicity, which ensures that beneficial microbiota is not harmed, unlike antibiotics. These therapeutic properties make phage therapy a novel approach for combating resistant pathogens. Since millions of people across the globe succumb to multidrug-resistant infections, the implementation of phage therapy as a standard antimicrobial could transform global medicine as it offers greater therapeutic advantages than conventional antibiotics. Although phage therapy has incomplete clinical data, such as a lack of standard dosage and the ideal mode of administration, the conducted clinical studies report its safety and efficacy in some case studies, and therefore, this could lessen the concerns of its skeptics. Since its discovery, the development of phage therapeutics has been in a smooth progression. Concerns about phage resistance in populations of pathogenic bacteria are raised when bacteria are exposed to phages. Bacteria can use restriction-modification, Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)/CRISPR-associated protein (Cas) defense, or mutations in the phage receptors to prevent phage invasion. Phage resistance, however, is often costly for the bacteria and may lead to a reduction in its virulence. The ongoing competition between bacteria and phage, on the other hand, ensures the emergence of phage strains that have evolved to infect resistant bacteria. A phage can quickly adapt by altering one or more aspects of its mode of infection, evading a resistance mechanism through genetic modifications, or directly thwarting the CRISPR-Cas defense. Using phage-bacterium coevolution as a technique could be crucial in the development of phage therapy as well. Through its recent advancement, gene-editing tools such as CRISPR-Cas allow the bioengineering of phages to produce phage cocktails that have broad spectrum activities, which could maximize the treatment's efficacy. This review presents the current state of phage therapy and its progression toward establishing standard medicine for combating antibiotic resistance. Recent clinical trials of phage therapy, some important case studies, and other ongoing clinical studies of phage therapy are all presented in this review. Furthermore, the recent advancement in the development of phage therapeutics, its application in various sectors, and concerns regarding its implementation are also highlighted here. Phage therapy has great potential and could help the fight against drug-resistant bacterial pathogens., Competing Interests: Declaration of competing interest The authors declare that they have no conflict of interest. “We declare that this manuscript is original, has not been published and is not under consideration for publication elsewhere and there are no conflicts of interest to disclose.", (Copyright © 2023 Elsevier Ltd. All rights reserved.)
- Published
- 2023
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13. Development of sustainable strontium ferrite graphene nanocomposite for highly effective catalysis and antimicrobial activity.
- Author
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Mayani SV, Bhatt SP, Mayani VJ, and Sanghvi G
- Subjects
- Strontium, Antifungal Agents, Eosine Yellowish-(YS), Catalysis, Graphite chemistry, Nanocomposites chemistry
- Abstract
Graphene oxide (GO) has layered structure with carbon atoms that are highly coated with oxygen-containing groups, increasing the interlayer distance while simultaneously making hydrophilic atomic-thick layers. It is exfoliated sheets that only have one or a few layers of carbon atoms. In our work, Strontium Ferrite Graphene Composite (SF@GOC) has been synthesized and thoroughly characterized by physico-chemical methods like XRD, FTIR, SEM-EDX, TEM, AFM, TGA and Nitrogen adsorption desorption analysis. A very few catalysts have been manufactured so far that are capable of degrading Eosin-Y and Orange (II) dyes in water by heterogeneous catalytic method. The current study offers an overview of the recyclable nanocomposite SF@GOC used in mild reaction conditions to breakdown the hazardous water pollutant dyes Eosin-Y (96.2%) and Orange (II) (98.7%). The leaching experiment has demonstrated that the use of the transition metals strontium and iron have not result in any secondary contamination. Moreover, antibacterial and antifungal assay have been investigated. SF@GOC has shown greater activity with bacterial and fungal species while compared with GO. FESEM analysis shows that the bactericidal mechanism for SF@GOC is same in both gram-negative bacteria. The difference in the antifungal activity among the candida strains can be correlated with the movement of ions release (slower and faster) of synthesized nanoscrolls in SF@GOC. In comparison to previous reports, this new environmentally safe and novel catalyst showed substantial degrading activity. It can also be applied to new multifunctional processes such as in the fields of composite materials, solar energy, heterogeneous catalysis and biomedical applications., (© 2023. The Author(s).)
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- 2023
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14. A state-of-the-art review on WWTP associated bioaerosols: Microbial diversity, potential emission stages, dispersion factors, and control strategies.
- Author
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Singh NK, Sanghvi G, Yadav M, Padhiyar H, and Thanki A
- Subjects
- Humans, Species Specificity, Water Purification, Aerosols analysis, Air Microbiology, Bacteria classification, Fungi classification, Viruses classification
- Abstract
Wastewater treatment plants (WWTPs) associated bioaerosols have emerged as one of the critical sustainability indicators, ensuring health and well-being of societies and cities. In this context, this review summarizes the various wastewater treatment technologies which have been studied with a focus of bioaerosols emissions, potential emission stages, available sampling strategies, survival and dispersion factors, dominant microbial species in bioaerosols, and possible control approaches. Literature review revealed that most of the studies were devoted to sampling, enumerating and identifying cultivable microbial species of bioaerosols, as well as measuring their concentrations. However, the role of treatment technologies and their operational factors are investigated in limited studies only. Moreover, few studies have been reported to investigate the presence and concentrations of air borne virus and fungi in WWTP, as compared to bacterial species. The common environmental factors, affecting the survival and dispersion of bioaerosols, are observed as relative humidity, temperature, wind speed, and solar illumination. Further, research studies on recent episodes of COVID-19 (SARS-CoV-2 virus) pandemic also revealed that continuous and effective surveillance on WWTPs associated bioaerosols may led to early sign for future pandemics. The evaluation of reported data is bit complicated, due to the variation in sampling approaches, ambient conditions, and site activities of each study. Therefore, such studies need a standardized methodology and improved guidance to help informed future policies, contextual research, and support a robust health-based risk assessment process. Based on this review, an integrated sampling and analysis framework is suggested for future WWTPs to ensure their sustainability at social and/or health associated aspects., (Copyright © 2020 Elsevier B.V. All rights reserved.)
- Published
- 2021
- Full Text
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15. Eminence of Microbial Products in Cosmetic Industry.
- Author
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Gupta PL, Rajput M, Oza T, Trivedi U, and Sanghvi G
- Abstract
Cosmetology is the developing branch of science, having direct impact on the society. The cosmetic sector is interested in finding novel biological alternatives which can enhance the product attributes as well as it can substitute chemical compounds. Many of the compounds are having biological origin and are acquire from bacteria, fungi, and algae. A range of biological compounds, like bio-surfactant, vitamins, antioxidants, pigments, enzymes, peptides have promising features and beneficial properties. Moreover, these products can be produced commercially with ease. The review will encompass the importance and use of microbial compounds for new cosmetic formulations as well as products associated with it.
- Published
- 2019
- Full Text
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16. Ficus recemosa bark extract attenuates diabetic complications and oxidative stress in STZ-induced diabetic rats.
- Author
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Joshi H, Vaishnav D, Sanghvi G, Rabadia S, Airao V, Sharma T, Parmar S, and Sheth N
- Subjects
- Animals, Antioxidants isolation & purification, Biomarkers blood, Chromatography, Thin Layer, Diabetes Mellitus, Experimental blood, Diabetes Mellitus, Experimental chemically induced, Diabetic Cardiomyopathies blood, Diabetic Cardiomyopathies chemically induced, Diabetic Cardiomyopathies pathology, Diabetic Nephropathies blood, Diabetic Nephropathies chemically induced, Diabetic Nephropathies pathology, Hypertrophy, Left Ventricular chemically induced, Hypertrophy, Left Ventricular prevention & control, Hypoglycemic Agents isolation & purification, Kidney drug effects, Kidney metabolism, Kidney pathology, Male, Methanol chemistry, Myocardium metabolism, Myocardium pathology, Phytotherapy, Plant Extracts isolation & purification, Plants, Medicinal, Rats, Wistar, Solvents chemistry, Streptozocin, Time Factors, Antioxidants pharmacology, Diabetes Mellitus, Experimental drug therapy, Diabetic Cardiomyopathies prevention & control, Diabetic Nephropathies prevention & control, Ficus chemistry, Hypoglycemic Agents pharmacology, Oxidative Stress drug effects, Plant Bark chemistry, Plant Extracts pharmacology
- Abstract
Context Ficus recemosa Linn. (Moraceae) has been reported as a natural folk medicine with diverse pathological activities such as antioxidant, antidiabetic, renoprotective and cardioprotective. Objective The present study evaluates the preventive effect of standardised ethanol extract of F. racemosa stem bark (EEFSB) on diabetic cardiomyopathy (DC) and diabetic nephropathy (DN). Materials and methods Animals were rendered diabetic by one time administration of STZ (45 mg kg(-1), i.v.) and, after 7 d, diabetic rats were randomised into four groups of eight rats each. EEFSB (200 and 400 mg kg(-1)) was administered to diabetic rats once daily for 8 weeks. Furthermore, the presence of phytochemicals was evaluated by HPTLC. Results Treatment with EEFSB markedly restores the blood glucose and lipid level (p < 0.001), also reduced creatinine kinase (p < 0.001), lactate dehydrogenase (p < 0.001), C-reactive protein (p < 0.001), creatinine (p < 0.001), blood urea nitrogen (p < 0.001), collagen (p < 0.05) and albumin (p < 0.001) levels. Reduced level of sodium (p < 0.001), creatinine (p < 0.001), albumin (p < 0.001) and malondialdehyde (p < 0.01) in heart and kidney tissue along with enhanced activities of superoxide dismutase (p < 0.001) and reduced glutathione (p < 0.001). Moreover, left ventricular hypertrophic index and cardiac hypertrophic index were markedly reduced by EEFSB treatment. Conclusion The findings of this study provided strong scientific evidence for the traditional use of F. racemosa and postulate protective effects against diabetes and its complications such as DC and DN.
- Published
- 2016
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17. A novel alkaline keratinase from Bacillus subtilis DP1 with potential utility in cosmetic formulation.
- Author
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Sanghvi G, Patel H, Vaishnav D, Oza T, Dave G, Kunjadia P, and Sheth N
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- Animals, Bacillus subtilis metabolism, Chickens, Hair Removal, Hydrogen-Ion Concentration, Peptide Hydrolases biosynthesis, Peptide Hydrolases isolation & purification, Protein Structure, Secondary, Temperature, Bacillus subtilis enzymology, Cosmetics chemistry, Drug Compounding, Peptide Hydrolases chemistry
- Abstract
The Bacillus subtilis DP1 was isolated from poultry farm soil at Anand district, India. The highest enzyme production (379.65U/ml) was obtained at pH 10.0, a temperature of 37°C and a growth period of 72h. The extracellular keratinase was purified by gel filtration chromatography with 27.98 purification fold. Purity was also confirmed by High-Performance Liquid Chromatography (HPLC) analysis, where a major peak having retention time of 2.5min was obtained on C18 column using photo diode array detector. Purified keratinase was stable in a broad range of pH (8-12) and temperature (20-50°C) with optimum at pH 10.0 and 37°C. The metallic ions, Ca(2+) and Mg(2+) enhance keratinase activity. Secondary structure from Circular Dichroism (CD) spectra implies that purified keratinase is largely β-pleated sheet rich protein. For preparation of dehairing cream formulation, compatibility studies of excipients were carried out. Fourier transform infrared spectroscopy (FTIR) spectra of sodium stearate, calcium carbonate and sodium lauryl sulphate shows no reactivity of functional groups and hence mixture was compatible for formulation of keratinase dehairing cream. Prepared biological depilatory was able to remove hair more efficiently compared to marketed formulations., (Copyright © 2016 Elsevier B.V. All rights reserved.)
- Published
- 2016
- Full Text
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18. Mitigation of acrylamide by l-asparaginase from Bacillus subtilis KDPS1 and analysis of degradation products by HPLC and HPTLC.
- Author
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Sanghvi G, Bhimani K, Vaishnav D, Oza T, Dave G, Kunjadia P, and Sheth N
- Abstract
The use of bacterial l-asparaginase (LA) is one of the alternative approaches for acrylamide reduction in food stuffs as it catalyzes the conversion of l-asparagine to l-aspartic acid and ammonia. In present investigation, purification of extracellular LA from isolate of Bacillus subtilis sp. strain KDPS-1 was carried out by solid state fermentation process. The effects of solid substrates, initial moisture content, moistening agents, temperature, and incubation time on LA production was studied, and the highest asparaginase activity (47 IU/ml) was achieved in the medium having orange peel as substrate. The enzyme was purified to homogeneity by diethylaminoethyl (DEAE) cellulose ion exchange chromatography; with 84.89 % yield and 12.11 fold purity. LA showed stimulant activity against β-mercaptoethanol and was greatly inhibited by Zn(2+) and Hg(2+) metal ions. Reduction of acrylamide in fried potatoes was detected by high performance liquid chromatography, which showed clear degradation of acrylamide by height and area (%) in the chromatograms of standard sample to that of the test sample. Hydrolysates analysis by high performance thin layer chromatography confirmed the test sample to be LA.
- Published
- 2016
- Full Text
- View/download PDF
19. Purification and Characterization of Haloalkaline, Organic Solvent Stable Xylanase from Newly Isolated Halophilic Bacterium-OKH.
- Author
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Sanghvi G, Jivrajani M, Patel N, Jivrajani H, Bhaskara GB, and Patel S
- Abstract
A novel, alkali-tolerant halophilic bacterium-OKH with an ability to produce extracellular halophilic, alkali-tolerant, organic solvent stable, and moderately thermostable xylanase was isolated from salt salterns of Mithapur region, Gujarat, India. Identification of the bacterium was done based upon biochemical tests and 16S rRNA sequence. Maximum xylanase production was achieved at pH 9.0 and 37°C temperature in the medium containing 15% NaCl and 1% (w/v) corn cobs. Sugarcane bagasse and wheat straw also induce xylanase production when used as carbon source. The enzyme was active over a range of 0-25% sodium chloride examined in culture broth. The optimum xylanase activity was observed at 5% sodium chloride. Xylanase was purified with 25.81%-fold purification and 17.1% yield. Kinetic properties such as Km and Vmax were 4.2 mg/mL and 0.31 μmol/min/mL, respectively. The enzyme was stable at pH 6.0 and 50°C with 60% activity after 8 hours of incubation. Enzyme activity was enhanced by Ca(2+), Mn(2+), and Mg(2+) but strongly inhibited by heavy metals such as Hg(2+), Fe(3+), Ni(2+), and Zn(2+). Xylanase was found to be stable in organic solvents like glutaraldehyde and isopropanol. The purified enzyme hydrolysed lignocellulosic substrates. Xylanase, purified from the halophilic bacterium-OKH, has potential biotechnological applications.
- Published
- 2014
- Full Text
- View/download PDF
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