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Article: Cooler and drier conditions increase parasitism in a subtropical damselfly population.

Paul, Shatabdi / Rayhan, Mostakim / Herberstein, Marie E / Khan, Md Kawsar

2024 Volume 14, Issue 2, Page(s) e10897

Abstract: Host-parasite interactions are impacted by climate, which may result in variation of parasitism across landscapes and time. Understanding how parasitism varies across these spatio-temporal scales is crucial to predicting how organisms will respond to and ...

Abstract	Host-parasite interactions are impacted by climate, which may result in variation of parasitism across landscapes and time. Understanding how parasitism varies across these spatio-temporal scales is crucial to predicting how organisms will respond to and cope under a rapidly changing climate. Empirical work on how parasitism varies across climates is limited. Here, we examine the variation of parasitism across seasons and identify the likely climatic factors that explain this variation using
Language	English
Publishing date	2024-01-31
Publishing country	England
Document type	Journal Article
ZDB-ID	2635675-2
ISSN	2045-7758
ISSN	2045-7758
DOI	10.1002/ece3.10897
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Article ; Online: Design and Synthesis of Metalloporphyrin Nanoconjugates for Dual Light-Responsive Antimicrobial Photodynamic Therapy.

Pujari, Anil Kumar / Kaur, Ravneet / Reddy, Yeddula Nikhileshwar / Paul, Shatabdi / Gogde, Kunal / Bhaumik, Jayeeta

Journal of medicinal chemistry

2024 Volume 67, Issue 3, Page(s) 2004–2018

Abstract: Antimicrobial photodynamic therapy (APDT) utilizes photosensitizers (PSs) that eradicate a broad spectrum of bacteria in the presence of light and molecular oxygen. On the other hand, some light sources such as ultraviolet (UVB and UVC) have poor ... ...

Abstract	Antimicrobial photodynamic therapy (APDT) utilizes photosensitizers (PSs) that eradicate a broad spectrum of bacteria in the presence of light and molecular oxygen. On the other hand, some light sources such as ultraviolet (UVB and UVC) have poor penetration and high cytotoxicity, leading to undesired PDT of the PSs. Herein, we have synthesized conjugatable mesosubstituted porphyrins and extensively characterized them. Time-dependent density functional theory (TD-DFT) calculations revealed that metalloporphyrin
MeSH term(s)	Photochemotherapy ; Nanoconjugates/chemistry ; Metalloporphyrins/pharmacology ; Photosensitizing Agents/pharmacology ; Photosensitizing Agents/therapeutic use ; Photosensitizing Agents/chemistry ; Anti-Infective Agents
Chemical Substances	Nanoconjugates ; Metalloporphyrins ; Photosensitizing Agents ; Anti-Infective Agents
Language	English
Publishing date	2024-01-19
Publishing country	United States
Document type	Journal Article
ZDB-ID	218133-2
ISSN	1520-4804 ; 0022-2623
ISSN (online)	1520-4804
ISSN	0022-2623
DOI	10.1021/acs.jmedchem.3c01841
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Article ; Online: Sexual and developmental variations of ecto-parasitism in damselflies.

Paul, Shatabdi / Khan, Md Kawsar / Herberstein, Marie E

PloS one

2022 Volume 17, Issue 7, Page(s) e0261540

Abstract: The prevalence and intensity of parasitism can have different fitness costs between sexes, and across species and developmental stages. This variation could arise because of species specific sexual and developmental differences in body condition, ... ...

Abstract	The prevalence and intensity of parasitism can have different fitness costs between sexes, and across species and developmental stages. This variation could arise because of species specific sexual and developmental differences in body condition, immunity, and resistance. Theory predicts that the prevalence of parasitism will be greater in individuals with poor body condition and the intensity of parasitism will be greater in individuals with larger body size. These predictions have been tested and verified in vertebrates. In insects, however, contradictory evidence has been found in different taxa. Here, we tested these predictions on two species of Agriocnemis (Agriocnemis femina and Agriocnemis pygmaea) damselflies, which are parasitized by Arrenurus water mite ectoparasites. We measured body weight, total body length, abdomen area and thorax area of non-parasitized damselflies and found body condition varied between males and females, between immature females and mature females and between A. femina and A. pygmaea. Then, we calculated the parasite prevalence, i.e., the absence or presence of parasites and intensity, i.e., the number of parasites per infected damselfly in eleven natural populations of both species. In line to our predictions, we observed greater prevalence in immature females than mature females but found no difference in parasite prevalence between males and females. Furthermore, we found that parasite intensity was higher in females than males and in immature females than mature females. Our result also showed that the frequency and intensity of parasitism varied between the two studied species, being higher in A. pygmaea than A. femina. Our study provides evidence that parasitism impacts sexes, developmental stages and species differentially and suggests that variation may occur due to sex, developmental stage, and species-specific resistance and tolerance mechanism.
MeSH term(s)	Animals ; Body Size ; Female ; Host-Parasite Interactions ; Humans ; Insecta/parasitology ; Male ; Mites ; Odonata
Language	English
Publishing date	2022-07-08
Publishing country	United States
Document type	Journal Article
ZDB-ID	2267670-3
ISSN	1932-6203 ; 1932-6203
ISSN (online)	1932-6203
ISSN	1932-6203
DOI	10.1371/journal.pone.0261540
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Article ; Online: In Situ

Reddy, Yeddula Nikhileshwar / De, Angana / Paul, Shatabdi / Pujari, Anil Kumar / Bhaumik, Jayeeta

Biomacromolecules

2023 Volume 24, Issue 4, Page(s) 1717–1730

Abstract: Metal-organic frameworks (MOFs) have dramatically changed the fundamentals of drug delivery, catalysis, and gas storage as a result of their porous geometry, controlled architecture, and ease of postsynthetic modification. However, the biomedical ... ...

Abstract	Metal-organic frameworks (MOFs) have dramatically changed the fundamentals of drug delivery, catalysis, and gas storage as a result of their porous geometry, controlled architecture, and ease of postsynthetic modification. However, the biomedical applications of MOFs still remain a less explored area due to the constraints associated with handling, utilizing, and site-specific delivery. The major drawbacks associated with the synthesis of nano-MOFs are related to the lack of control over particle size and inhomogeneous dispersion during doping. Therefore, a smart strategy for the
MeSH term(s)	Resin Cements ; Hydrogels/pharmacology ; Escherichia coli ; Rose Bengal ; Metal-Organic Frameworks/chemistry ; Hydrogen-Ion Concentration
Chemical Substances	Resin Cements ; Hydrogels ; Rose Bengal (1ZPG1ELY14) ; Metal-Organic Frameworks
Language	English
Publishing date	2023-03-10
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	1526-4602
ISSN (online)	1526-4602
DOI	10.1021/acs.biomac.2c01489
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Article: Body size and diet breadth drive local extinction risk in butterflies.

Palash, Anwar / Paul, Shatabdi / Resha, Sabrina Karim / Khan, Md Kawsar

Heliyon

2022 Volume 8, Issue 8, Page(s) e10290

Abstract: Lepidoptera, butterflies and moths, are significant pollinators and ecosystem health indicators. Therefore, monitoring their diversity, distribution, and extinction risks are of critical importance. We aim to understand drivers of local extinction risks ... ...

Abstract	Lepidoptera, butterflies and moths, are significant pollinators and ecosystem health indicators. Therefore, monitoring their diversity, distribution, and extinction risks are of critical importance. We aim to understand drivers of local extinction risks of the butterflies in Bangladesh. We conducted a systematic review to extract local extinction risks of the butterflies of Bangladesh, and possible drivers (e.g., body size and diet breadth) of their extinction. We tested whether body size, larval host plants and adult nectar plants contribute to the local extinction risks of butterflies. We predicted butterflies with larger body size and fewer host and nectar plants would be in greater extinction risk. We showed extinction risk is higher in larger butterflies than smaller butterflies, and in butterflies with fewer number of host and nectar plants than the butterflies with higher number host and nectar plants. Our study identifies body size and diet breadth as a potential driver of the local extinction of butterflies thereby suggesting larger conservation urgency for the larger butterflies with narrow diet breadth.
Language	English
Publishing date	2022-08-17
Publishing country	England
Document type	Journal Article
ZDB-ID	2835763-2
ISSN	2405-8440
ISSN	2405-8440
DOI	10.1016/j.heliyon.2022.e10290
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Article ; Online: Synthesis of Metallo-Chromone Porphyrin Nano-Starch Sensitizers as Photodynamic Therapeutics for the Eradication of Enterococci Dental Pathogens.

Gogde, Kunal / Paul, Shatabdi / Pujari, Anil Kumar / Yadav, Ashok Kumar / Bhaumik, Jayeeta

Journal of medicinal chemistry

2023 Volume 66, Issue 18, Page(s) 13058–13071

Abstract: Photodynamic therapy (PDT), as an advanced, alternative, and promising treatment, can inhibit dental pathogens. PDT employs the activation of photosensitizers via the light of a particular wavelength and molecular oxygen to inhibit dental pathogens. ... ...

Abstract	Photodynamic therapy (PDT), as an advanced, alternative, and promising treatment, can inhibit dental pathogens. PDT employs the activation of photosensitizers via the light of a particular wavelength and molecular oxygen to inhibit dental pathogens. Herein, we present a comprehensive study on the synthesis and characterization of three chromone-porphyrins [Zn(II)-5-[4-chromone]-15-(4-phenyl)porphyrin (ZnCP), 5-[4-chromone]-15-(4-12 phenyl)porphyrin (DMCP), and Pd(II)-5-[4-chromone]-15-(4-phenyl)porphyrin (PdCP)]. Next, the computational study was also performed to establish the correlation between photophysical properties and theoretical calculations for those chromone-porphyrins using density functional theory and time-dependent density functional theory. Furthermore, chromone-porphyrins were encapsulated in starch nanoparticles to develop soluble nano-starch sensitizers (ZnCP-SNPs, DMCP-SNPs, and PdCP-SNPs) via the nanoprecipitation technique. Upon green light exposure, these nano-starch sensitizers exhibited excellent singlet oxygen generation ability. Moreover, final nanoformulations have been explored for pH responsiveness. Based on our intriguing findings, the chromone-porphyrin-loaded nano-starch sensitizers displayed great potential as prospective PDT to treat enterococci dental pathogens.
MeSH term(s)	Porphyrins/chemistry ; Photochemotherapy/methods ; Dimyristoylphosphatidylcholine ; Prospective Studies ; Photosensitizing Agents/chemistry
Chemical Substances	Porphyrins ; Dimyristoylphosphatidylcholine (U86ZGC74V5) ; Photosensitizing Agents
Language	English
Publishing date	2023-09-06
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	218133-2
ISSN	1520-4804 ; 0022-2623
ISSN (online)	1520-4804
ISSN	0022-2623
DOI	10.1021/acs.jmedchem.3c01087
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Article ; Online: Body size and diet breadth drive local extinction risk in butterflies

Palash, Anwar / Paul, Shatabdi / Resha, Sabrina Karim / Khan, Md Kawsar

Heliyon. 2022 Aug., v. 8, no. 8 p.e10290-

2022

Abstract	Lepidoptera, butterflies and moths, are significant pollinators and ecosystem health indicators. Therefore, monitoring their diversity, distribution, and extinction risks are of critical importance. We aim to understand drivers of local extinction risks of the butterflies in Bangladesh. We conducted a systematic review to extract local extinction risks of the butterflies of Bangladesh, and possible drivers (e.g., body size and diet breadth) of their extinction. We tested whether body size, larval host plants and adult nectar plants contribute to the local extinction risks of butterflies. We predicted butterflies with larger body size and fewer host and nectar plants would be in greater extinction risk. We showed extinction risk is higher in larger butterflies than smaller butterflies, and in butterflies with fewer number of host and nectar plants than the butterflies with higher number host and nectar plants. Our study identifies body size and diet breadth as a potential driver of the local extinction of butterflies thereby suggesting larger conservation urgency for the larger butterflies with narrow diet breadth.
Keywords	Lepidoptera ; adults ; body size ; environmental health ; extinction ; foraging ; larvae ; nectar ; risk ; systematic review ; Bangladesh ; Insects ; Biodiversity ; Diet breadth ; South Asia ; Conservation
Language	English
Dates of publication	2022-08
Publishing place	Elsevier Ltd
Document type	Article ; Online
Note	Use and reproduction
ZDB-ID	2835763-2
ISSN	2405-8440
ISSN	2405-8440
DOI	10.1016/j.heliyon.2022.e10290
Database	NAL-Catalogue (AGRICOLA)

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Article: Development of a light activatable lignin nanosphere based spray coating for bioimaging and antimicrobial photodynamic therapy

Paul, Shatabdi / Thakur, Neeraj S / Chandna, Sanjam / Reddy, Y. Nikhileshwar / Bhaumik, Jayeeta

Journal of materials chemistry B. 2021 Feb. 19, v. 9, no. 6

2021

Abstract: Many coating materials are commercially available to combat microbial infections. However, these coatings are difficult to synthesize, and are mostly composed of toxic chemicals. Lignin is an under-explored natural biopolymer with multifaceted potential. ...

Abstract	Many coating materials are commercially available to combat microbial infections. However, these coatings are difficult to synthesize, and are mostly composed of toxic chemicals. Lignin is an under-explored natural biopolymer with multifaceted potential. Lignin, with adhesive, UV resistant, and antimicrobial properties, is a suitable candidate to develop coating materials. Here we report a smart method to fabricate a sustainable nanospray coating from lignin which does not require any toxic chemicals or additives during synthesis. Initially, we have developed stable lignin nanospheres in a single step in aqueous medium, which were later utilized as a lignin nanospray (LNSR). The LNSR was characterized by dynamic light scattering, scanning electron microscopy, FTIR and other analytical techniques. This LNSR showed remarkable UV blocking, antioxidant and light-activated antimicrobial properties. Interestingly, for the first time, the LNSR demonstrated photoluminescence, making it useful for bioimaging. Moreover, singlet oxygen generation potential was observed in the LNSR, which could render it useful in phototheranostic applications (i.e. light assisted imaging and photodynamic therapy). Further, the LNSR was directly utilized to fabricate a sustainable coating. The nanospray coating exhibited maximum light-induced cell killing when applied to common microbes as detected by live–dead cell imaging. Taken together, the lignin nanospray coating developed via a direct pathway holds great promise to disinfect microbes in the presence of light.
Keywords	bioimaging ; biopolymers ; chemistry ; lignin ; nanospheres ; photochemotherapy ; photoluminescence ; singlet oxygen ; toxicity
Language	English
Dates of publication	2021-0219
Size	p. 1592-1603.
Publishing place	The Royal Society of Chemistry
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	2702241-9
ISSN	2050-7518 ; 2050-750X
ISSN (online)	2050-7518
ISSN	2050-750X
DOI	10.1039/d0tb02643c
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Development of a light activatable lignin nanosphere based spray coating for bioimaging and antimicrobial photodynamic therapy.

Paul, Shatabdi / Thakur, Neeraj S / Chandna, Sanjam / Reddy, Y Nikhileshwar / Bhaumik, Jayeeta

Journal of materials chemistry. B

2021 Volume 9, Issue 6, Page(s) 1592–1603

Abstract	Many coating materials are commercially available to combat microbial infections. However, these coatings are difficult to synthesize, and are mostly composed of toxic chemicals. Lignin is an under-explored natural biopolymer with multifaceted potential. Lignin, with adhesive, UV resistant, and antimicrobial properties, is a suitable candidate to develop coating materials. Here we report a smart method to fabricate a sustainable nanospray coating from lignin which does not require any toxic chemicals or additives during synthesis. Initially, we have developed stable lignin nanospheres in a single step in aqueous medium, which were later utilized as a lignin nanospray (LNSR). The LNSR was characterized by dynamic light scattering, scanning electron microscopy, FTIR and other analytical techniques. This LNSR showed remarkable UV blocking, antioxidant and light-activated antimicrobial properties. Interestingly, for the first time, the LNSR demonstrated photoluminescence, making it useful for bioimaging. Moreover, singlet oxygen generation potential was observed in the LNSR, which could render it useful in phototheranostic applications (i.e. light assisted imaging and photodynamic therapy). Further, the LNSR was directly utilized to fabricate a sustainable coating. The nanospray coating exhibited maximum light-induced cell killing when applied to common microbes as detected by live-dead cell imaging. Taken together, the lignin nanospray coating developed via a direct pathway holds great promise to disinfect microbes in the presence of light.
MeSH term(s)	Anti-Bacterial Agents/chemical synthesis ; Anti-Bacterial Agents/chemistry ; Anti-Bacterial Agents/pharmacology ; Antioxidants/chemical synthesis ; Antioxidants/chemistry ; Antioxidants/pharmacology ; Bacillus megaterium/drug effects ; Coated Materials, Biocompatible/chemical synthesis ; Coated Materials, Biocompatible/chemistry ; Coated Materials, Biocompatible/pharmacology ; Drug Development ; Escherichia coli/drug effects ; Light ; Lignin/chemical synthesis ; Lignin/chemistry ; Lignin/pharmacology ; Microbial Sensitivity Tests ; Molecular Structure ; Nanoparticles/chemistry ; Particle Size ; Photochemotherapy ; Surface Properties
Chemical Substances	Anti-Bacterial Agents ; Antioxidants ; Coated Materials, Biocompatible ; Lignin (9005-53-2)
Language	English
Publishing date	2021-01-20
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2702241-9
ISSN	2050-7518 ; 2050-750X
ISSN (online)	2050-7518
ISSN	2050-750X
DOI	10.1039/d0tb02643c
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Article ; Online: Retention of antibiotic activity against resistant bacteria harbouring aminoglycoside-N-acetyltransferase enzyme by adjuvants: a combination of in-silico and in-vitro study.

Ahmed, Shamim / Sony, Sabrina Amita / Chowdhury, Md Belal / Ullah, Md Mahib / Paul, Shatabdi / Hossain, Tanvir

Scientific reports

2020 Volume 10, Issue 1, Page(s) 19381

Abstract: Interference with antibiotic activity and its inactivation by bacterial modifying enzymes is a prevailing mode of bacterial resistance to antibiotics. Aminoglycoside antibiotics become inactivated by aminoglycoside-6'-N-acetyltransferase-Ib [AAC(6')-Ib] ... ...

Abstract	Interference with antibiotic activity and its inactivation by bacterial modifying enzymes is a prevailing mode of bacterial resistance to antibiotics. Aminoglycoside antibiotics become inactivated by aminoglycoside-6'-N-acetyltransferase-Ib [AAC(6')-Ib] of gram-negative bacteria which transfers an acetyl group from acetyl-CoA to the antibiotic. The aim of the study was to disrupt the enzymatic activity of AAC(6')-Ib by adjuvants and restore aminoglycoside activity as a result. The binding affinities of several vitamins and chemical compounds with AAC(6')-Ib of Escherichia coli, Klebsiella pneumoniae, and Shigella sonnei were determined by molecular docking method to screen potential adjuvants. Adjuvants having higher binding affinity with target enzymes were further analyzed in-vitro to assess their impact on bacterial growth and bacterial modifying enzyme AAC(6')-Ib activity. Four compounds-zinc pyrithione (ZnPT), vitamin D, vitamin E and vitamin K-exhibited higher binding affinity to AAC(6')-Ib than the enzyme's natural substrate acetyl-CoA. Combination of each of these adjuvants with three aminoglycoside antibiotics-amikacin, gentamicin and kanamycin-were found to significantly increase the antibacterial activity against the selected bacterial species as well as hampering the activity of AAC(6')-Ib. The selection process of adjuvants and the use of those in combination with aminoglycoside antibiotics promises to be a novel area in overcoming bacterial resistance.
MeSH term(s)	Acetyltransferases/antagonists & inhibitors ; Acetyltransferases/chemistry ; Bacterial Proteins/antagonists & inhibitors ; Bacterial Proteins/chemistry ; Drug Resistance, Bacterial ; Escherichia coli/enzymology ; Klebsiella pneumoniae/enzymology ; Molecular Docking Simulation ; Shigella sonnei/enzymology
Chemical Substances	Bacterial Proteins ; Acetyltransferases (EC 2.3.1.-) ; aminoglycoside N(6')-acetyltransferase (EC 2.3.1.82)
Language	English
Publishing date	2020-11-09
Publishing country	England
Document type	Journal Article
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-020-76355-0
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