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1.
Int J Biol Macromol ; 267(Pt 2): 131389, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38582461

RESUMO

This work developed Acer tegmentosum extract-mediated silver nanoparticles (AgNPs) loaded chitosan (CS)/alginic acid (AL) scaffolds (CS/AL-AgNPs) to enhance the healing of E. coli-infected wounds. The SEM-EDS and XRD results revealed the successful formation of the CS/AL-AgNPs. FTIR analysis evidenced that the anionic group of AL (-COO-) and cationic amine groups of CS (-NH3+) were ionically crosslinked to form scaffold (CS/AL). The CS/AL-AgNPs exhibited significant antimicrobial activity against both Gram-positive (G+) and Gram-negative (G-) bacterial pathogens, while being non-toxic to red blood cells (RBCs), the hen's egg chorioallantoic membrane (HET-CAM), and a non-cancerous cell line (NIH3T3). Treatment with CS/AL-AgNPs significantly accelerated the healing of E. coli-infected wounds by regulating the collagen deposition and blood parameters as evidenced by in vivo experiments. Overall, these findings suggest that CS/AL-AgNPs are promising for the treatment of infected wounds.


Assuntos
Acer , Alginatos , Antibacterianos , Quitosana , Escherichia coli , Nanopartículas Metálicas , Extratos Vegetais , Prata , Cicatrização , Quitosana/química , Quitosana/farmacologia , Nanopartículas Metálicas/química , Prata/química , Prata/farmacologia , Animais , Cicatrização/efeitos dos fármacos , Escherichia coli/efeitos dos fármacos , Camundongos , Acer/química , Extratos Vegetais/química , Extratos Vegetais/farmacologia , Células NIH 3T3 , Antibacterianos/farmacologia , Antibacterianos/química , Alginatos/química , Alginatos/farmacologia , Infecções por Escherichia coli/tratamento farmacológico , Alicerces Teciduais/química
2.
Int J Biol Macromol ; 259(Pt 1): 129165, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38163501

RESUMO

This work aimed to prepare multifunctional aptamer-conjugated, photothermally responsive 5-fluorouracil (5fu)-loaded chitosan-bimetallic (Au/Pd) nanoparticles (APT-CS-5fu-Au/Pd NPs) for improved cytotoxicity in two cancer cell lines (PANC-1 and MDA-MD 231). The CS-5fu-Au/Pd NPs were polydispersed with a size of 34.43 ± 1.59 nm. FTIR analysis indicated the presence of CS, 5fu in CS-5fu-Au/Pd NPs. The 2 theta degrees in CS-5fu-Au/Pd NPs accounted for CS and Au/Pd. Additionally, AGE revealed the conjugation of APT in CS-5fu-Au/Pd NPs. The APT-CS-5fu-Au/Pd NPs (180 µg/mL) with NIR treatment increased the temperature to >50 °C. The optimized 5fu input was 0.075 % in CS-5fu-Au/Pd NPs, exhibiting a hydrodynamic size of 112.96 ± 17.23 nm, DEE of 64.2 ± 3.77 %, and DLE of 11.1 ± 0.65 %. A higher level of 5fu release (69.8 ± 2.78 %) was observed under pH 5.4 at 74 h. In conclusion, NIR-APT-CS-5fu-Au/Pd NPs did not cause toxicity to RBC and Egg CAM, but increased cytotoxicity in MDA-MB 231 and PANC-1 cells by triggering oxidative stress-mediated cell death.


Assuntos
Quitosana , Nanopartículas , Neoplasias de Mama Triplo Negativas , Humanos , Fluoruracila/farmacologia , Morte Celular
3.
Environ Res ; 242: 117600, 2024 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-37939806

RESUMO

Dichlorvos (2,2-Dichlorovinyl dimethyl phosphate, [DDVP]) belongs to the class of organophosphates and is widely used as an insecticide in agriculture farming and post-harvest storage units. Extensive research has been conducted to assess the factors responsible for the presence of DDVP in terrestrial and aquatic ecosystems, as well as the entire food chain. Numerous studies have demonstrated the presence of DDVP metabolites in the food chain and their toxicity to mammals. These studies emphasize that both immediate and chronic exposure to DDVP can disrupt the host's homeostasis, leading to multi-organ damage. Furthermore, as a potent carcinogen, DDVP can harm aquatic systems. Therefore, understanding the contamination of DDVP and its toxicological effects on both plants and mammals is vital for minimizing potential risks and enhancing safety in the future. This review aimed to comprehensively consolidate information about the distribution, ecological effects, and health impacts of DDVP, as well as its metabolism, detection, prevention, and remediation strategies. In summary, this study observes the distribution of DDVP contaminations in vegetables and fruits, resulting in significant toxicity to humans. Although several detection and bioremediation strategies are emerging, the improper application of DDVP and the alarming level of DDVP contamination in foods lead to human toxicity that requires attention.


Assuntos
Diclorvós , Inseticidas , Compostos Organofosforados , Animais , Humanos , Diclorvós/toxicidade , Diclorvós/metabolismo , Ecossistema , Inseticidas/toxicidade , Mamíferos/metabolismo
4.
Environ Res ; 246: 118004, 2024 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-38145732

RESUMO

The colonization of pathogenic microbes poses a significant clinical barrier that hinders the physiological wound-healing process. Addressing this challenge, we developed a novel wound dressing using a modified cotton gauze dressing coated with fucoidan and functionalized with silver nanoparticles (LB-Ag NPs-FN-OCG) for the rapid treatment of infected wounds. Firstly, phytochemical-capped LB-Ag NPs were synthesized and characterized using high performance liquid chromatography (HPLC), transmission electron microscopy (TEM), and zeta potential analysis. Secondly, different concentrations of LB-Ag NPs (0.1%-1%) were functionalized into FN-OCG to identify appropriate concentrations that were non-toxic with superior antibacterial activities. Screening assays, including antibacterial, hemolysis, chick chorioallantoic membrane (CAM) assay, and cytotoxicity assay, revealed that LB-Ag NPs (0.5%)-FN-OCG were non-toxic and demonstrated greater efficiency in inhibiting bacterial pathogens (Escherichia coli, Salmonella enterica, Staphylococcus aureus, and Listeria monocytogenes) and promoting fibroblast cell (NIH3T3) migration. In vivo assays revealed that LB-Ag NPs (0.5%)-FN-OCG treatment exhibited excellent wound healing activity (99.73 ± 0.01%) compared to other treatments by inhibiting bacterial colonization, maintaining the blood parameters, developing granulation tissue, new blood vessels, and collagen deposition. Overall, this study highlights that LB-Ag NPs (0.5%)-FN-OCG serve as a antibacterial wound dressing for infected wound healing applications.


Assuntos
Nanopartículas Metálicas , Polissacarídeos , Prata , Camundongos , Animais , Prata/química , Nanopartículas Metálicas/química , Células NIH 3T3 , Cicatrização , Antibacterianos/farmacologia , Bandagens
5.
Int J Biol Macromol ; 242(Pt 2): 124813, 2023 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-37172699

RESUMO

We prepared nanocomposite (XG-AVE-Ag/MgO NCs) using the bimetallic Ag/MgO NPs, Aloe vera extract (AVE), and biopolymer (xanthan gum (XG)) to archive a synergetic antibacterial and wound healing activity. The changes in XRD peaks at 20° of XG-AVE-Ag/MgO NCs indicated the XG encapsulation. The XG-AVE-Ag/MgO NCs showed the zeta potential and zeta size of 151.3 ± 3.14 d.nm and -15.2 ± 1.08 mV with a PDI of 0.265 while TEM showed an average size of 61.19 ± 3.89 nm. The EDS confirmed the co-existence of Ag, Mg, carbon, oxygen, and nitrogen in NCs. XG-AVE-Ag/MgO NCs displayed higher antibacterial activity in terms of zone of inhibition, at 15.00 ± 0.12 mm for B. cereus and 14.50 ± 0.85 mm for E. coli. Moreover, NCs exhibited MICs of 2.5 µg/mL for E. coli, and 0.62 µg/mL for B. cereus. The in vitro cytotoxicity and hemolysis assays indicated the non-toxic properties of XG-AVE-Ag/MgO NCs. The higher wound closure activity was observed with the treatment of XG-AVE-Ag/MgO NCs (91.19 ± 1.87 %) compared to the control, untreated group (68.68 ± 3.54 %) at 48 h of incubation. These findings revealed that XG-AVE-Ag/MgO NCs was promising, non-toxic, antibacterial, and wound-healing agent that deserved further in-vivo studies.


Assuntos
Aloe , Nanopartículas Metálicas , Nanopartículas , Óxido de Magnésio/farmacologia , Escherichia coli , Antibacterianos/farmacologia , Cicatrização
6.
Environ Sci Pollut Res Int ; 30(21): 60976-60993, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-37042914

RESUMO

In the recent past, phytomolecules are exponentially applied in discovering the antidiabetic drug due to less adverse effects. This work screened the active solvent fraction of Lespedeza cuneata based on the phytochemical, enzyme inhibition, and antioxidant properties. The antioxidant efficacy of the different fractions of the L. cuneata was assessed by 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), ferric reducing power, hydrogen peroxide, and hydroxyl radical scavenging assays. The digestive enzyme (α-amylase and α-glucosidase) inhibitory activity was also evaluated. The phytochemical composition of ethyl acetate fraction of L. cuneata (Lc-EAF) was studied by UHPLC-QTOF-MS/MS. The effect of Lc-EAF treatments on glucose uptake was studied in insulin resistance HepG2 cells (IR-HepG2). Further, the antidiabetic effect of Lc-EAF in streptozotocin (STZ)-induced diabetic mice were demonstrated. Ethyl acetate, hexane, and methanol fractions of the L. cuneata showed notable antioxidant, α-amylase, and α-glucosidase inhibitory properties. Among the fractions, Lc-EAF was found to be the most potent. The Lc-EAF exhibited an IC50 of 205.32 ± 23.47 µg/mL and 105.32 ± 13.93 µg/mL for α-amylase and α-glucosidase inhibition, respectively. In addition, 75 µg/mL of Lc-EAF exposure enhanced glucose uptake (68.23%) in IR-HepG2 cells. In vivo study indicated that treatment of Lc-EAF (100 mg/kg b.wt) maintained the blood glucose level through reduced insulin level while improving the lipid profile, hepatic, and renal markers. These findings suggest that Lc-EAF could be considered a prominent source for antidiabetic, anti-hyperlipidemic, and anti-ROS potentials.


Assuntos
Diabetes Mellitus Experimental , Lespedeza , Ratos , Camundongos , Animais , Hipoglicemiantes/farmacologia , Antioxidantes/farmacologia , Antioxidantes/química , Diabetes Mellitus Experimental/tratamento farmacológico , Estreptozocina , alfa-Glucosidases , Espectrometria de Massas em Tandem , Extratos Vegetais/química , alfa-Amilases , Compostos Fitoquímicos/farmacologia , Compostos Fitoquímicos/química , Glucose
7.
Environ Sci Pollut Res Int ; 30(55): 117000-117010, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36884180

RESUMO

Herein, we prepared the silica nanoparticles (SiO2 NPs) by a modified Stober's method for methyl orange (MO) removal. The SiO2 NPs were found to be spherical with a zeta size of 152.5 d. nm, a PDI of 0.377, and a zeta potential of -5.59 mV. The effect of different parameters (initial dye concentration, reaction time, temperature, and pH) on the adsorption of MO by SiO2 NPs was determined. The adsorption pattern of SiO2 NPs was highly fitted with the Langmuir, Freundlich, Redlich-Peteroen, and Temkin isotherm models. The highest adsorption rate was recorded at 69.40 mg/g of SiO2 NPs. Furthermore, the toxic effect of before and after removal of MO in aqueous solution was tested in terms of phytotoxicity and acute toxicity. The SiO2 NPs treated MO dye solution were not exhibited significant toxicity to corn seeds and Artemia salina. These results indicated that SiO2 NPs can be used for the adsorption of MO.


Assuntos
Nanopartículas , Poluentes Químicos da Água , Animais , Dióxido de Silício , Zea mays , Artemia , Adsorção , Nanopartículas/toxicidade , Cinética , Poluentes Químicos da Água/toxicidade , Concentração de Íons de Hidrogênio
8.
Int J Biol Macromol ; 237: 124129, 2023 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-36958450

RESUMO

Drug-resistant microorganisms are defeated using combinational drug delivery systems based on biopolymer chitosan (CS) and metal nanoparticles. Hence, PEGylated zinc oxide nanoparticles (P-ZnO NPs) decorated chitosan-based nanoparticles (CS NPs) were prepared to deliver ampicillin (AMP) for improved antibacterial activity. In comparison to ZnO NPs, P-ZnO NPs exhibit less aggregation and more stable rod morphologies in TEM. The size of the P-ZnO NPs decreased and was engulfed by the spherical CS-AMP NPs. The zeta potential of the CS-AMP-P-ZnO NPs was determined to be -32.93 mV and the hydrodynamic size to be 210.2 d. nm. Further, DEE and DLE of CS-AMP (2.0:0.2 w/w) showed 79.60 ± 2.62 % and 15.14 ± 2.11 %, respectively. The cumulative AMP release was observed at >50 % at 48 h at pH 5.4 and 7.4. Additionally, when compared to AMP, CS-AMP-P-ZnO NPs had better antibacterial activity against E. coli, due to the alternation of cell membrane permeability by CS and ZnO NPs. Moreover, the hemolytic properties of ZnO NPs were attenuated because of PEGylation and CS. Furthermore, due to the biocompatible behavior of CS, CS-AMP-P-ZnO NPs did not exhibit toxicity on HEK-293 cells, erythrocytes, and chick embryos. Hence, this study concludes that CS-AMP-P-ZnO NPs could be a promising antibacterial agent.


Assuntos
Quitosana , Nanopartículas Metálicas , Nanopartículas , Óxido de Zinco , Humanos , Animais , Embrião de Galinha , Quitosana/química , Óxido de Zinco/química , Sistemas de Liberação de Fármacos por Nanopartículas , Escherichia coli , Células HEK293 , Antibacterianos/química , Penicilinas , Nanopartículas/química , Nanopartículas Metálicas/química , Ampicilina , Testes de Sensibilidade Microbiana
9.
Antioxidants (Basel) ; 12(2)2023 Jan 22.
Artigo em Inglês | MEDLINE | ID: mdl-36829807

RESUMO

The current study assessed the metabolite abundance, alpha (α)-amylase and α-glucosidase inhibitory, antioxidant, and antibacterial activity of the ethyl acetate extract (EAE) of endophytic Penicillium lanosum (PL) and Penicillium radiatolobatum (PR). A higher extract yield was found in EAE-PR with a total phenolic content of 119.87 ± 3.74 mg of GAE/g DW and a total flavonoid content of 16.26 ± 1.95 mg of QE/g DW. The EAE-PR inhibited α-amylase and scavenged ABTS+ radicals with a half-maximal inhibitory concentration (IC50) of 362.5 and 37.5 µg/mL, respectively. Compared with EAE-PL, EAE-PR exhibited higher antibacterial activity against Gram-positive and Gram-negative pathogens. Treatment with EAE-PR (1000 µg/mL) did not cause significant toxicity in the HEK-293 cell line compared to the control cells (p < 0.05). EAE-PR treatments (250-1000 µg/mL) showed higher cytoprotective effects toward H2O2-stressed HEK-293 cells compared with ascorbic acid (AA). The UHPLC-Q-TOF-MS/MS analysis revealed the presence of thiophene A (C13H8S), limonene (C10H16), and phenylacetic acid (C8H8O2) in EAE-PR. Furthermore, these compounds demonstrated substantial interactions with diabetes (α-amylase and α-glucosidase), oxidative stress (NADPH-oxidase), and bacteria (D-alanine D-alanine ligase)-related enzymes/proteins evidenced in silico molecular docking analysis.

10.
Appl Biochem Biotechnol ; 195(6): 3914-3927, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35857178

RESUMO

The conventional production of chitosan from crustaceans has many limitations. An attempt was made to optimize chitosan production from fungi. Soil fungi were isolated, identified, and screened for high glucosamine content. Among the fungal isolates tested, Cunninghamella echinulata showed high glucosamine content. The biomass production of C. echinulata was standardized under different growth parameters. The physicochemical characterization of derived chitosan isolates was distinctive and diverged as supported by the FT-IR, molecular mass distribution, degree of deacetylation, and crystallinity. Molecular mass distribution ranged from 1 to 9 mers. The degree of deacetylation was observed to be maximum in C6 (80.88%), which increased with the increase in alkali concentration. In the chitosan isolate, C1 was non-toxic to Vero cells up to 250 µg/mL. In the physicochemical and functional properties of chitosan isolate, C1 was found to be unique and diverse; further detailed investigations on this isolate might help to develop some biomaterials with improved biocompatibility.


Assuntos
Quitosana , Cunninghamella , Animais , Chlorocebus aethiops , Quitosana/farmacologia , Quitosana/química , Espectroscopia de Infravermelho com Transformada de Fourier , Células Vero
11.
Appl Biochem Biotechnol ; 195(6): 3822-3839, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-36260249

RESUMO

In this study, two extracellular polysaccharides (TEPS1 and TEPS2) were isolated from the endophytic fungus (Talaromyces purpureogenus) and purified by DEAE-Sepharose Fast Flow column using NaCl as gradient eluent. The HPLC analysis displayed that TEPS1 was composed of mannose (38.70%), ribose (25.02%), glucose (19.34%), and galactose (16.94%) while the TEPS2 composed by mannose (100%). The NMR results indicated that TEPS1 exhibited α-glycosidic configurations. The both polysaccharides, TEPS1 and TEPS2 were exhibited a good antioxidant activity in terms of DPPH, ABTS, and •OH scavenging. However, TEPS1 showed a higher antioxidant activity than TEPS2. The IC50 of TEPS1 were 32.16, 192.57, and 54.67 µg·mL-1, for DPPH, ABTS, and •OH radical scavenging, respectively. Furthermore, TEPS1 showed the high cellular antioxidant and wound healing activity in the human embryonic kidney (HEK293) cell line. Overall, these two polysaccharides were promising in antioxidant activity.


Assuntos
Antioxidantes , Talaromyces , Humanos , Antioxidantes/química , Manose , Células HEK293 , Talaromyces/metabolismo , Polissacarídeos/química , Cicatrização
12.
Appl Biochem Biotechnol ; 195(6): 3928-3940, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35947292

RESUMO

This work aimed to investigate the effect of EPS (extracellular polysaccharide) of Weissella cibaria as a prebiotic to promote the growth and antibacterial properties of Lactobacillus rhamnosus. The morphological, growth behavior, and antibacterial properties of L. rhamnosus were determined in MRSB (de Man Rogosa Sharpe broth) supplemented with different concentrations of EPS (0.1-2%). The results revealed that the incorporation of the EPS (2%) in MRSA improved the bacterial growth in terms of colony-forming unit (CFU, 0.7 × 105 CFU/mL) compared to L. rhamnosus grown in bare MRSA. The SEM observation revealed that EPS incorporation in the MRSB culture media does not affect the morphological properties of L. rhamnosus. Moreover, it was confirmed that the extract of probiotics cultured in MRSA supplemented with EPS (2%) was exhibited strong antibacterial and antibiofilm activity against targeted pathogens. This L. rhamnosus extract was found to be biocompatible evidanced by erythrocyte hemolysis assay. These results confirmed that EPS regulates the growth of probiotics, resists pathogen infection, and biocompatibility.


Assuntos
Lacticaseibacillus rhamnosus , Probióticos , Weissella , Humanos , Prebióticos , Lactobacillus/metabolismo , Weissella/metabolismo , Antibacterianos/farmacologia
13.
Int J Biol Macromol ; 222(Pt B): 2744-2760, 2022 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-36243158

RESUMO

Hyaluronic acid (HA) plays a vital role in cellular processes and its contribution to physical and immunological barriers is considered to be an important property for the formulation of modern therapeutics. With the increasing demand for non-toxic and targeted therapy, HA-based materials could be utilized for biomedical applications due to their tendency to bio-mimic the hosts. Moreover, HA is a versatile compound in the fabrication of HA-based products such as hydrogels, nanofibers, and 3D materials. These have been implemented in various medical fields, such as bone and tissue regeneration, topical gels for wound healing, and cancer treatment via HA-loaded drug delivery approaches. Herein, we have discussed the characteristics of HA and its significance in drug delivery in addition to synergistic effects with other therapeutic compounds in the fields of nanomedicine, tissue engineering, and regenerative medicine.


Assuntos
Medicina Regenerativa , Engenharia Tecidual , Ácido Hialurônico/uso terapêutico , Nanomedicina , Hidrogéis/uso terapêutico
15.
Biomater Adv ; 141: 213129, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-36191538

RESUMO

This work developed a pH/NIR responsive antibacterial agent (CS-FeNPs) composed of chitosan (CS) and Fe3O4 nanoparticles (FeNPs). CS triggers bacterial attraction through surface charge, while Fe acts as a photothermal agent (PTA). The CS-Fe NPs exhibited antibacterial and antibiofilm activity against both bacteria (G+/G-). However, higher activity was observed against bacteria (G-) due to electrostatic interactions. The CS-FeNPs bind with the bacterial membrane through electrostatic interactions and disturb bacterial cells. Later, in an acidic environment, CS-FeNPs bind with bacterial membrane, and NIR irradiation leads the antibacterial activity. CS-FeNPs exhibited a potential photothermal conversion efficiency (η) of 21.53 %. Thus, it converts NIR irradiation into heat to kill the bacterial pathogen. The CS-FeNPs were found to be less cytotoxic with great antibacterial efficiency on planktonic bacteria and their biofilm, which indicates that they deserve to develop potential and safe treatment strategies for the treatment of bacterial infections.


Assuntos
Quitosana , Antibacterianos/farmacologia , Bactérias , Biofilmes/efeitos da radiação , Quitosana/farmacologia , Nanopartículas Magnéticas de Óxido de Ferro
16.
Int J Biol Macromol ; 220: 1556-1569, 2022 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-36100005

RESUMO

Wound healing is a significant clinical and socioeconomic problem that is often affected by microbial infection. Inappropriate monitoring leads to unfavorable concerns for surrounding tissues. Cotton gauzes have been used as low-cost wound dressing material but prolong healing owing to strong adherence and secondary microbial infections. Hence, we prepared the bimetallic (silver and platinum) nanoparticles (AgPt NPs) using citric acid (CA) as a reducing agent and then coated them on chitosan (CS) fabricated cotton gauze (CG) for enhanced antimicrobial and wound healing applications. The synthesis of AgPt NPs was evidenced UV-Visible spectroscopy, FE-TEM, and elemental mapping analysis. The average size of AgPt NPs was 21.48 ± 6.32 nm and spherical in structure. Besides, AgPt NPs showed a hydrodynamic size of 63.64 (d.nm) with a polydispersity index of 0.220 and a zeta potential of -28.1 mV. The FT-IR and XRD analysis demonstrated the functional changes and crystalline properties of AgPt NPs. The antimicrobial efficacy of AgPt NPs was significantly higher than standard antibiotic against bacteria, yeast, and filamentous fungi. Furthermore, the AgPt NPs-CS/CG exhibited a substantial hydrophobic nature with better antimicrobial and antioxidant activity. In addition, pH-dependent Ag and Pt release from the AgPt NPs-CS/CG was determined by ICP-MS analysis. The treatment of AgPt NPs-CS/CG augmented the in vitro wound healing in mouse embryonic fibroblast cells (NIH3T3). Hence, we concluded that AgPt NPs-CS/CG could be used to enhance antimicrobial and wound healing applications.


Assuntos
Anti-Infecciosos , Quitosana , Nanopartículas Metálicas , Animais , Antibacterianos/química , Antibacterianos/farmacologia , Anti-Infecciosos/química , Anti-Infecciosos/farmacologia , Antioxidantes , Bandagens , Quitosana/química , Ácido Cítrico , Fibroblastos , Nanopartículas Metálicas/química , Camundongos , Testes de Sensibilidade Microbiana , Células NIH 3T3 , Platina/química , Substâncias Redutoras , Prata/química , Espectroscopia de Infravermelho com Transformada de Fourier , Cicatrização
17.
Int J Mol Sci ; 23(17)2022 Sep 02.
Artigo em Inglês | MEDLINE | ID: mdl-36077456

RESUMO

A total of sixteen bacterial strains were isolated and identified from the fourteen types of Korean fermented foods that were evaluated for their in vitro probiotic potentials. The results showed the highest survivability for Bacillus sp. compared to Lactobacillus sp. in simulated gastric pH, and it was found to be maximum for B. inaquosorum KNUAS016 (8.25 ± 0.08 log10 CFU/mL) and minimum for L. sakei KNUAS019 (0.8 ± 0.02 log10 CFU/mL) at 3 h of incubation. Furthermore, B. inaquosorum KNUAS016 and L. brevis KNUAS017 also had the highest survival rates of 6.86 ± 0.02 and 5.37 ± 0.01 log10 CFU/mL, respectively, in a simulated intestinal fluid condition at 4 h of incubation. The percentage of autoaggregation at 6 h for L. sakei KNUAS019 (66.55 ± 0.33%), B. tequilensis KNUAS015 (64.56 ± 0.14%), and B. inaquosorum KNUAS016 (61.63 ± 0.19%) was >60%, whereas it was lower for L. brevis KNUAS017 (29.98 ± 0.09%). Additionally, B. subtilis KNUAS003 showed higher coaggregation at 63.84 ± 0.19% while B. proteolyticus KNUAS001 found at 30.02 ± 0.33%. Among them, Lactobacillus sp. showed the best non-hemolytic activity. The highest DPPH and ABTS radical scavenging activity was observed in L. sakei KNUAS019 (58.25% and 71.88%). The cell-free supernatant of Lactobacillus sp. considerably inhibited pathogenic growth, while the cell-free supernatant of Bacillus sp. was moderately inhibited when incubated for 24 h. However, the overall results found that B. subtilis KNUAS003, B. proteolyticus KNUAS012, L. brevis KNUAS017, L. graminis KNUAS018, and L. sakei KNUAS019 were recognized as potential probiotics through different functional and toxicity assessments.


Assuntos
Alimentos Fermentados , Probióticos , Antibacterianos/farmacologia , Antioxidantes/farmacologia , Lactobacillus , Probióticos/farmacologia , República da Coreia
18.
Brief Bioinform ; 23(4)2022 07 18.
Artigo em Inglês | MEDLINE | ID: mdl-35794708

RESUMO

Fungal extracellular vesicles (EVs) are released during pathogenesis and are found to be an opportunistic infection in most cases. EVs are immunocompetent with their host and have paved the way for new biomedical approaches to drug delivery and the treatment of complex diseases including cancer. With computing and processing advancements, the rise of bioinformatics tools for the evaluation of various parameters involved in fungal EVs has blossomed. In this review, we have complied and explored the bioinformatics tools to analyze the host-pathogen interaction, toxicity, omics and pathogenesis with an array of specific tools that have depicted the ability of EVs as vector/carrier for therapeutic agents and as a potential theme for immunotherapy. We have also discussed the generation and pathways involved in the production, transport, pathogenic action and immunological interactions of EVs in the host system. The incorporation of network pharmacology approaches has been discussed regarding fungal pathogens and their significance in drug discovery. To represent the overview, we have presented and demonstrated an in silico study model to portray the human Cryptococcal interactions.


Assuntos
Biologia Computacional , Vesículas Extracelulares , Vesículas Extracelulares/metabolismo , Interações Hospedeiro-Patógeno , Humanos , Imunidade
19.
Environ Res ; 214(Pt 1): 113781, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-35780847

RESUMO

Phthalates are utilized as plasticizers in plastic products to enhance their durability, transparency, and elasticity. However, phthalates are not covalently bonded to the polymer matrix of the phthalate-containing products and can be gradually released into the environment through biogeochemical processes. Hence, phthalates are now pervasive in our environment, including our food. Reports suggested that phthalates exposure to the mammalian systems is linked to various health consequences. It has become vital to develop highly efficient strategies to reduce phthalates from the environment. In this context, the utilization of fungi for phthalate bioremediation (mycoremediation) is advantageous due to their highly effective enzyme secretory system. Extracellular and intracellular enzymes of fungi are believed to break down the phthalates by ester hydrolysis to produce phthalic acid and alcohol, and subsequent digestion of the benzene rings of phthalic acid and their metabolites. The present review scrutinizes and highlights the knowledge gap in phthalate prevalence, exposure to mammals, and associated human health challenges. Furthermore, discusses the role of fungi and their secretory enzymes in the biodegradation of phthalates and gives a perspective to better describe and tackle this continuous threat.


Assuntos
Poluentes Ambientais , Ácidos Ftálicos , Animais , Biodegradação Ambiental , Exposição Ambiental , Humanos , Mamíferos , Plastificantes
20.
Chemosphere ; 307(Pt 1): 135593, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-35809745

RESUMO

The hazardous risk posed by industrial effluent discharge into the ecosystem has raised a plethora of environmental issues, public health, and safety concerns. The effluents from industries such as tanning, leather, petrochemicals, pharmaceuticals, and textiles are create significant stress on the aquatic ecosystem, which induces significant toxicity, involved in endocrine disruptions, and inhibits reproductive functions. Therefore, this review presented an overall abridgment of the effects of these effluents and their ability to synergize with modern pollutants such as pharmaceuticals, cosmetic chemicals, nanoparticles, and heavy metals. We further emphasize the metal organic framework (MOF) based membrane filtration approach for remediation of industrial effluents in comparison to the traditional remediation process. The MOF based-hybrid membrane filters provide higher reusability, better adsorption, and superior removal rates through the implication of nanotechnology, while the traditional remediation process offers poorer filtration rates and stability.


Assuntos
Poluentes Ambientais , Estruturas Metalorgânicas , Metais Pesados , Poluentes Químicos da Água , Ecossistema , Humanos , Resíduos Industriais/análise , Metais Pesados/análise , Preparações Farmacêuticas , Poluentes Químicos da Água/análise
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