Publications by authors named "Narender K Dhania"

An effective and affordable nanoadsorbent, magnetically separable magnetite-activated bamboo carbon (MABC), was obtained from waste bamboo biomass pyrolysis of bamboo chunks and the co-precipitation method using ferrous and ferric chloride as iron precursors. The synthesized nanosorbents were characterised using XRD, SEM, and DLS techniques to study the surface characteristics and morphology. Chemical composition, optical absorption, and magnetic properties were studied using FTIR spectroscopy, UV-vis spectroscopy, and VSM, respectively.

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Isolation of Extracellular Vesicles (EVs) has been done extensively in the past using ultracentrifugation, a recent shift has been observed towards precipitation, and exosome isolation kits. These methods often co-elute contaminants of similar size and density which makes their detection and downstream applications quite challenging. As well as the EV yield is also compromised in some methodologies due to aggregate formation.

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Muscular dystrophy is a well-known genetically heterogeneous group of rare muscle disorders. This progressive disease causes the breakdown of skeletal muscles over time and leads to grave weakness. This breakdown is caused by a diverse pattern of mutations in dystrophin and dystrophin associated protein complex.

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The pulmonary epithelial sodium ion channel (ENaC) is gaining importance for its sodium gating and mechanosensitive roles. The mechano functional studies on ENaC suggest direct molecular interactions between the ENaC protein with cytoskeleton microtubules and other extracellular matrix components. Also, in few mechanotransduction studies, ENaC was shown to respond both to membrane stretch as well as cell volume changes.

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Article Synopsis
  • Insect resistance to biopesticides, particularly Bt (Bacillus thuringiensis), is a growing global concern, especially with how some lepidopteran larvae recover from exposure and develop resistance.
  • The study highlights the crucial role of gut arylphorin in the midgut's regenerative response after sublethal Bt exposure in Achaea janata, detailing specific cellular changes caused by toxin damage.
  • Findings suggest that arylphorin influences stem cell proliferation and epithelial regeneration by regulating Cyclin B levels, offering insights to improve the long-term effectiveness of Bt technology in pest management.
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The midgut of lepidopteran larvae is a multifunctional tissue that performs roles in digestion, absorption, immunity, transmission of pathogens and interaction with ingested various molecules. The proteins localized at the inner apical brush border membrane are primarily digestive proteases, but some of them, like aminopeptidase N, alkaline phosphatase, cadherins, ABC transporter C2, etc., interact with Crystal (Cry) toxins produced by ().

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Article Synopsis
  • - Achaea janata larvae are significant agricultural pests that damage Ricinus communis (Castor) in India, leading to economic losses, and are targeted by microbial insecticides like Bacillus thuringiensis (Bt).
  • - The overuse of Bt-based pesticides risks developing resistance among susceptible larvae, and there's a knowledge gap due to limited genomic and transcriptomic data on this pest.
  • - This research presents a new midgut de novo transcriptome assembly for both susceptible and tolerant Achaea janata larvae, enhancing our understanding of their biological responses to Cry toxins and aiding in better pest management strategies.
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India is the major producer and exporter of castor oil in the world. Castor semilooper, Achaea janata is one of the main castor crop pests, which causes serious economic loss of crop, hence management and control of the pest are important. Currently, Bacillus thuringiensis (Bt) based biopesticides are being used for their control.

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The lack of homogeneity in field application of formulation often results in ingestion of sub-lethal doses of the biopesticide by a fraction of pest population and there by promotes the toxin tolerance and resistance in long term. Gut regeneration seems to be one of the possible mechanism by which this is accomplished. However, the existing information is primarily derived from studies using mid-gut cell cultures.

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Insecticidal effects of Cry toxins in hemocoel of larvae have not been properly evaluated. In the present study, hemocoelic injection of four representative Cry toxins i.e.

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