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1.
Sci Rep ; 14(1): 10406, 2024 05 06.
Artigo em Inglês | MEDLINE | ID: mdl-38710736

RESUMO

Active pharmaceutical ingredients have emerged as an environmentally undesirable element because of their widespread exploitation and consequent pollution, which has deleterious effects on living things. In the pursuit of sustainable environmental remediation, biomedical applications, and energy production, there has been a significant focus on two-dimensional materials (2D materials) owing to their unique electrical, optical, and structural properties. Herein, we have synthesized 2D zinc oxide nanosheets (ZnO NSs) using a facile and practicable hydrothermal method and characterized them thoroughly using spectroscopic and microscopic techniques. The 2D nanosheets are used as an efficient photocatalyst for antibiotic (herein, end-user ciprofloxacin (CIP) was used as a model antibiotic) degradation under sunlight. It is observed that ZnO NSs photodegrade ~ 90% of CIP within two hours of sunlight illumination. The molecular mechanism of CIP degradation is proposed based on ex-situ IR analysis. Moreover, the 2D ZNO NSs are used as an antimicrobial agent and exhibit antibacterial qualities against a range of bacterial species, including Escherichia coli, Staphylococcus aureus, and MIC of the bacteria are found to be 5 µg/l and 10 µg/l, respectively. Despite having the biocompatible nature of ZnO, as-synthesized nanosheets have also shown cytotoxicity against two types of cancer cells, i.e. A549 and A375. Thus, ZnO nanosheets showed a nontoxic nature, which can be exploited as promising alternatives in different biomedical applications.


Assuntos
Antibacterianos , Antineoplásicos , Nanoestruturas , Óxido de Zinco , Óxido de Zinco/química , Óxido de Zinco/farmacologia , Humanos , Antibacterianos/farmacologia , Antibacterianos/química , Catálise , Antineoplásicos/farmacologia , Antineoplásicos/química , Nanoestruturas/química , Escherichia coli/efeitos dos fármacos , Ciprofloxacina/farmacologia , Ciprofloxacina/química , Staphylococcus aureus/efeitos dos fármacos , Testes de Sensibilidade Microbiana , Linhagem Celular Tumoral , Processos Fotoquímicos , Fotólise
2.
Molecules ; 29(9)2024 Apr 30.
Artigo em Inglês | MEDLINE | ID: mdl-38731568

RESUMO

Cancer is one of the major causes of death, and its negative impact continues to rise globally. Chemotherapy, which is the most common therapy, has several limitations due to its tremendous side effects. Therefore, developing an alternate therapeutic agent with high biocompatibility is indeed needed. The anti-oxidative effects and bioactivities of several different crude extracts of marine algae have been evaluated both in vitro and in vivo. In the present study, we synthesized the aqueous extract (HA) from the marine algae Amphiroa anceps, and then, a liposome was formulated for that extract (NHA). The extracts were characterized using different photophysical tools like dynamic light scattering, UV-visible spectroscopy, FTIR, scanning electron microscopy, and GC-MS analysis. The SEM image revealed a size range of 112-185 nm for NHA and the GC-MS results showed the presence of octadecanoic acid and n-Hexadecanoic acid in the majority. The anticancer activity was studied using A549 cells, and the NHA inhibited the cancer cells dose-dependently, with the highest killing of 92% at 100 µg/mL. The in vivo studies in the zebrafish model showed that neither the HA nor NHA of Amphiroa anceps showed any teratogenic effect. The outcome of our study showed that NHA can be a potential drug candidate for inhibiting cancer with good biocompatibility up to a dose of 100 µg/mL.


Assuntos
Antineoplásicos , Rodófitas , Peixe-Zebra , Rodófitas/química , Humanos , Animais , Antineoplásicos/farmacologia , Antineoplásicos/química , Células A549 , Neoplasias/tratamento farmacológico , Neoplasias/patologia , Extratos Vegetais/química , Extratos Vegetais/farmacologia , Lipossomos/química , Cromatografia Gasosa-Espectrometria de Massas , Nanopartículas/química , Linhagem Celular Tumoral
3.
ADMET DMPK ; 12(1): 177-192, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38560712

RESUMO

Background and purpose: Many sectors use nanoparticles and dispose of them in the aquatic environment without deciding the fate of these particles. Experimental approach: To identify a benign species of nanoparticles which can cause minimum harm to the aquatic environment, a comparative study was done with chemically synthesized silver nanoparticles (AgNPs) and green tea mediated synthesis (GT/AgNP) in both in vitro using human alveolar cancer cell line (A549) and normal cell line (L132), and in in vivo with zebrafish embryos. Key results: The in vitro studies revealed that GT/AgNPs were less toxic to normal cells than cancer cells. The GT/AgNPs showed high biocompatibility for zebrafish embryos monitored microscopically for their developmental stages and by cumulative hatchability studies. The reduced hatchability found in the AgNPs-treated group was correlated by differential gene expression of zebrafish hatching enzymes (ZHE) (ZHE1 and ZHE2). Conclusion: The results indicated that nanoparticles can affect the hatching of zebrafish embryos and elicit toxicity at the gene level.

4.
Genet Test Mol Biomarkers ; 28(3): 83-90, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38478803

RESUMO

Aim: The matrix metalloproteinases (MMPs) inhibit tissue inhibitors of metalloproteinases (TIMPs), playing a notable role in various biological processes, and mutations in TIMP2 genes impact a variety of urinary cancers. In this study, we analyze and evaluate the potential involvement of the TIMP2 418 G/C and MMP gene polymorphism in the etiology of urinary cancer. Methodology: For suitable case-control studies, a literature search was undertaken from various database sources such as PubMed, EMBASE, and Google Scholar. Incorporated into the analysis were case-control or cohort studies that documented the correlation between TIMP2 418 G/C and urological cancers. MetaGenyo served as the tool for conducting the meta-analysis, employing a fixed-effects model. The collective odds ratios, along with their corresponding 95% confidence intervals, were calculated and presented to assess the robustness of the observed associations. Results: A total of seven studies involving controls and cases out of recorded 1265 controls and 1154 cases were analyzed to ascertain the significant association of the TIMP2 gene with urologic cancer. No statistically significant correlation was observed between allelic, recessive, dominant, and overdominant models for the genetic variant under investigation. A 95% confidence interval (CI) and odds ratio (OR) were computed for each model, considering p-values <0.05. The OR and 95% CI for the allelic model were 0.99 and 0.77-1.27, respectively, whereas the respective values were 1.00 and 0.76-1.32 for the recessive model. In the dominant contrast model, OR and 95% CI were 1.09 and 0.62-1.90, while the same were 0.93 and 0.77-1.12 for the overdominant model. A funnel plot was used to reanalyze and detect the results as statically satisfactory. Conclusions: As a result of the data obtained, the TIMP2 gene polymorphism does not correlate statistically with cancer risk. The significance of this finding can only be confirmed using a large population, extensive epidemiological research, a comprehensive survey, and a better understanding of the molecular pathways associated.


Assuntos
Polimorfismo de Nucleotídeo Único , Inibidor Tecidual de Metaloproteinase-2 , Neoplasias Urológicas , Humanos , Alelos , Estudos de Casos e Controles , Predisposição Genética para Doença/genética , Polimorfismo de Nucleotídeo Único/genética , Inibidor Tecidual de Metaloproteinase-2/genética , Neoplasias Urológicas/genética
5.
Artif Cells Nanomed Biotechnol ; 52(1): 59-68, 2024 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38214666

RESUMO

The present study describes a method for the preparation of green titanium dioxide (TiO2) nanoparticles from the peel of Solanum tuberosum, commonly known as potato, and the potato peel being a kitchen waste. The green synthesized TiO2 (G- TiO2) nanoparticles were characterized using UV-visible spectroscopy, dynamic light scattering, scanning electron microscopy, TEM, XRD, and FTIR spectroscopy. The photocatalytic activity of the G- TiO2 nanoparticles was also shown using the dye bromophenol blue. To explore the biocompatibility of the G- TiO2, the cell viability in normal as well as cancer cells was assessed. Further, the in vivo toxicity of the G- TiO2 nanoparticles was assessed using zebrafish embryos. The novelty of the present invention is to utilize kitchen waste for a useful purpose for the synthesis of titanium dioxide nanoparticles which is known to have UV light scavenging properties. Moreover, the potato peel is a natural antioxidant and possesses a skin-lightening effect. A combination of the potato peel extract and titanium dioxide prepared using the extract will have a combinatorial effect for protecting UV light exposure to the skin and lightening the skin colour.


Assuntos
Nanopartículas , Solanum tuberosum , Animais , Peixe-Zebra , Nanopartículas/química , Titânio/farmacologia , Titânio/química , Extratos Vegetais/farmacologia , Extratos Vegetais/química , Catálise
6.
J Biomater Sci Polym Ed ; 35(3): 415-441, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38113194

RESUMO

Leukemia is a cancer of blood cells that mainly affects the white blood cells. In acute myeloid leukemia (AML) sudden growth of cancerous cells occurs in blood and bone marrow, and it disrupts normal blood cell production. Most patients are asymptomatic, but it spreads rapidly and can become fatal if left untreated. AML is the prevalent form of leukemia in children. Risk factors of AML include chemical exposure, radiation, genetics, etc. Conventional diagnostic methods of AML are complete blood count tests and bone marrow aspiration, while conventional treatment methods involve chemotherapy, radiation therapy, and bone marrow transplant. There is a risk of cancer cells spreading progressively to the other organs if left untreated, and hence, early diagnosis is required. The conventional diagnostic methods are time- consuming and have drawbacks like harmful side effects and recurrence of the disease. To overcome these difficulties, nanoparticles are employed in treating and diagnosing AML. These nanoparticles can be surface- modified and can be used against cancer cells. Due to their enhanced permeability effect and high surface-to-volume ratio they will be able to reach the tumour site which cannot be reached by traditional drugs. This review article talks about how nanotechnology is more advantageous over the traditional methods in the treatment and diagnosis of AML.


Assuntos
Leucemia Mieloide Aguda , Nanomedicina , Criança , Humanos , Leucemia Mieloide Aguda/terapia , Leucemia Mieloide Aguda/tratamento farmacológico , Medula Óssea
7.
Drug Deliv ; 30(1): 2284684, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37990530

RESUMO

It is evident that site-specific systemic drug delivery can reduce side effects, systemic toxicity, and minimal dosage requirements predominantly by delivering drugs to particular pathological sites, cells, and even subcellular structures. The endoplasmic reticulum (ER) and associated cell organelles play a vital role in several essential cellular functions and activities, such as the synthesis of lipids, steroids, membrane-associated proteins along with intracellular transport, signaling of Ca2+, and specific response to stress. Therefore, the dysfunction of ER is correlated with numerous diseases where cancer, neurodegenerative disorders, diabetes mellitus, hepatic disorder, etc., are very common. To achieve satisfactory therapeutic results in certain diseases, it is essential to engineer delivery systems that can effectively enter the cells and target ER. Nanoparticles are highly biocompatible, contain a variety of cargos or payloads, and can be modified in a pliable manner to achieve therapeutic effectiveness at the subcellular level when delivered to specific organelles. Passive targeting drug delivery vehicles, or active targeting drug delivery systems, reduce the nonselective accumulation of drugs while reducing side effects by modifying them with small molecular compounds, antibodies, polypeptides, or isolated bio-membranes. The targeting of ER and closely associated organelles in cells using nanoparticles, however, is still unsymmetrically understood. Therefore, here we summarized the pathophysiological prospect of ER stress, involvement of ER and mitochondrial response, disease related to ER dysfunctions, essential therapeutics, and nanoenabled modulation of their delivery to optimize therapy.


Assuntos
Nanopartículas , Neoplasias , Humanos , Retículo Endoplasmático/metabolismo , Retículo Endoplasmático/patologia , Mitocôndrias/metabolismo , Estresse do Retículo Endoplasmático/fisiologia , Sistemas de Liberação de Medicamentos , Neoplasias/metabolismo
8.
Curr Pharm Des ; 29(33): 2640-2654, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37957864

RESUMO

Cancer is one of the significant issues with public health and the second leading cause of death worldwide. The three most lethal cancers in the general population are stomach, lung, and liver cancers, in which lung and breast cancers cause the majority of cancer-associated deaths among men and women, respectively. CeO2 nanoparticles have a cytoprotectant effect in normal cells and a cytotoxic effect in cancer cells that enables them to induce the reactive oxygen species (ROS) production within cancer cells, which in turn develops reactive nitrogen species (RNS) that interfere with intracellular activities, and this property makes them an excellent anticancer agent. Because of its biofilm suppression, free radical scavenging ability, redox activity, and other unique properties, attention has been bestowed on cerium oxide nanoparticles as a potential alternative to solve many biomedical issues in the future. This review mainly focuses on the combinatorial effect of cerium dioxide nanoparticles and Doxorubicin in cancer management.


Assuntos
Antineoplásicos , Cério , Nanopartículas , Neoplasias , Masculino , Humanos , Feminino , Cério/farmacologia , Doxorrubicina/uso terapêutico , Doxorrubicina/farmacologia , Espécies Reativas de Oxigênio , Antineoplásicos/farmacologia , Antineoplásicos/uso terapêutico , Neoplasias/tratamento farmacológico
9.
ADMET DMPK ; 11(4): 499-511, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37937247

RESUMO

Background and purpose: The reciprocal translocation of the ABL gene from chromosome 9 to chromosome 22 near the BCR gene gives rise to chronic myelogenous leukemia (CML). The translocation results in forming the Philadelphia chromosome (BCR-ABL) tyrosine kinase. CML results in an increase in the number of white blood cells and alteration in tyrosine kinase expression. CML prognosis includes three stages, namely chronic, accelerated, and blast. The diagnosis method involves a CT scan, biopsy, and complete blood count. However, due to certain disadvantages, early diagnosis of CML is not possible by traditional methods. Nanotechnology offers many advantages in diagnosing and treating cancer. Experimental approach: We searched PubMed, Scopus and Google Scholar using the keywords Philadelphia chromosome, bionanotechnology, tyrosine kinase pathway, half-life, passive targeting, and organic and inorganic nanoparticles. The relevant papers and the classical papers in this field were selected to write about in this review. Key results: The sensitivity and specificity of an assay can be improved by nanoparticles. Utilizing this property, peptides, antibodies, aptamers, etc., in the form of nanoparticles, can be used to detect cancer at a much earlier stage. The half-life of the drug is also increased by nanoformulation. The nanoparticle-coated drugs can easily escape from the immune system. Conclusion: Depending on their type, nanoparticles can be categorized into organic, inorganic and hybrid. Each type has its advantages. Organic nanoparticles have good biocompatibility, inorganic nanoparticles increase the half-life of the drugs. In this review, we highlight the nanoparticles involved in treating CML.

10.
Bull Cancer ; 110(12): 1288-1300, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37813754

RESUMO

One of the primary threats in tumor treatment revolves around the limited ability to penetrate tumor sites, leading to reduced therapeutic effectiveness, which remains a critical concern. Recently gaining importance are novel peptides, namely CRGDK/RGPD/EC (iRGD), that possess enhanced tumor-penetrating and inhibitory properties. These peptides specifically target and penetrate tumors by binding to αvß integrins, namely αvß3 and αvß5, as well as NRP-1 receptors. Remarkably abundant on both the vasculature and tumor cell surfaces, these peptides show promising potential for improving tumor treatment outcomes. As a result, iRGD penetrated deep into the tumor tissues with biological products, contrast agents (imaging agents), antitumor drugs, and immune modulators after co-injecting them with peptides or chemically linked to peptides. The synthesis of iRGD peptides is a relatively straightforward process compared to the synthesis of other traditional peptides, and they significantly improved tumor tissue penetration inhibiting tumor metastasis effectively. Recent studies demonstrate the effectiveness of iRGD-driven dual-targeting chemotherapeutics on cancer cells, and the nanocarriers were modified with iRGD, serving as a favorable delivery strategy of payloads for deeper tumor regions. This review aims to provide an overview to emphasize the recent advancements and advantages of iRGD in treating and imaging various cancers.


Assuntos
Antineoplásicos , Neoplasias , Humanos , Linhagem Celular Tumoral , Peptídeos , Antineoplásicos/farmacologia , Neoplasias/diagnóstico por imagem , Neoplasias/tratamento farmacológico
11.
J Pharm Sci ; 112(11): 2891-2900, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37611665

RESUMO

Conventional chemotherapeutic drugs are used for cancer management, but recently nanoparticles have also been shown to contribute towards controlling cancer cell proliferation. In the present study, we focussed on analyzing the combinatorial effect of Cerium oxide (CeO2) nanoparticles and Doxorubicin (Dox) on melanoma cancer cells in vitro and in vivo. We entrapped CeO2, Dox, and CeO2+Dox in a hybrid polymer matrix of alginate and chitosan (Alg-Cs) and used them in both in vitro and in vivo studies to compare their anticancer effect. Scratch assay using A549 lung cancer cells showed delayed wound healing when exposed to a low and high dose of CeO2 +Dox, compared to individual components. In order to determine a safe dose of the nanoformulations, zebrafish embryos were used. Further, in vivo, testing was done on Swiss albino female mice where the melanoma was induced by applying Benzopyrene followed by UV irradiation. The animals were treated with CeO2, Dox, and CeO2+ Dox that were entrapped in Alg-Cs for further 21 days. From both in vivo and in vitro results, we concluded that CeO2 and Dox in combination had superior therapeutic efficiency in cancer cells and animals than the nude drugs.

12.
Genes (Basel) ; 14(7)2023 06 28.
Artigo em Inglês | MEDLINE | ID: mdl-37510275

RESUMO

Lung cancer is managed using conventional therapies, including chemotherapy, radiation therapy, or a combination of both. Each of these therapies has its own limitations, such as the indiscriminate killing of normal as well as cancer cells, the solubility of the chemotherapeutic drugs, rapid clearance of the drugs from circulation before reaching the tumor site, the resistance of cancer cells to radiation, and over-sensitization of normal cells to radiation. Other treatment modalities include gene therapy, immunological checkpoint inhibitors, drug repurposing, and in situ cryo-immune engineering (ICIE) strategy. Nanotechnology has come to the rescue to overcome many shortfalls of conventional therapies. Some of the nano-formulated chemotherapeutic drugs, as well as nanoparticles and nanostructures with surface modifications, have been used for effective cancer cell killing and radio sensitization, respectively. Nano-enabled drug delivery systems act as cargo to deliver the sensitizer molecules specifically to the tumor cells, thereby enabling the radiation therapy to be more effective. In this review, we have discussed the different conventional chemotherapies and radiation therapies used for inhibiting lung cancer. We have also discussed the improvement in chemotherapy and radiation sensitization using nanoparticles.


Assuntos
Neoplasias Pulmonares , Nanopartículas , Nanoestruturas , Humanos , Neoplasias Pulmonares/tratamento farmacológico , Nanopartículas/uso terapêutico , Nanopartículas/química , Sistemas de Liberação de Medicamentos , Nanotecnologia
13.
Naunyn Schmiedebergs Arch Pharmacol ; 396(12): 3407-3415, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37421430

RESUMO

Ovarian cancer cells usually spread in the peritoneal region, and if chemotherapeutic drugs can be given in these regions with proximity, then the anticancer property of the chemotherapeutic drugs can enhance. However, chemotherapeutic drug administrations are hindered by local toxicity. In the drug delivery system, microparticles or nanoparticles are administered in a controlled manner. Microparticles stay in a close vicinity while nanoparticles are smaller and can move evenly in the peritoneum. Intravenous administration of the drug evenly distributes the medicine in the target places and if the composition of the drug has nanoparticles it will have more specificity and will have easy access to the cancer cells and tumors. Among the different types of nanoparticles, polymeric nanoparticles were proven as most efficient in drug delivery. Polymeric nanoparticles are seen to be combined with many other molecules like metals, non-metals, lipids, and proteins, which helps in the increase of cellular uptake. The efficiency of different types of polymeric nanoparticles used in delivering the load for management of ovarian cancer will be discussed in this mini-review.


Assuntos
Antineoplásicos , Nanopartículas , Neoplasias Ovarianas , Humanos , Feminino , Antineoplásicos/uso terapêutico , Polímeros/metabolismo , Polímeros/uso terapêutico , Neoplasias Ovarianas/tratamento farmacológico , Neoplasias Ovarianas/metabolismo , Sistemas de Liberação de Medicamentos
14.
Appl Biochem Biotechnol ; 195(11): 6979-6993, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36976503

RESUMO

Photodynamic therapy (PDT) has recently become significant as a clinical modality for cancer therapy and multidrug-resistant (MDR) infections, replacing conventional chemotherapy and radiation therapy protocols. PDT involves the excitation of certain nontoxic molecules called photosensitizers (PS), applying a specific wavelength of light to generate reactive oxygen species (ROS) to treat cancer cells and other pathogens. Rhodamine 6G (R6G) is a well-known laser dye with poor aqueous solubility, and lower sensitivity poses an issue in using PS for PDT. Nanocarrier systems are needed to deliver R6G to cancer targets since PDT requires a higher accumulation of PS. It was found that R6G-conjugated gold nanoparticles (AuNP) have a higher ROS quantum yield of 0.92 compared to 0.3 in an aqueous R6G solution, increasing their potency as PS. Cytotoxicity assessment on A549 cells and antibacterial assay on MDR Pseudomonas aeruginosa collected from a sewage treatment plant are the evidence to support efficient PDT. In addition to their enhanced quantum yields, the decorated particles are effective in generating fluorescent signals that can be used for cellular imaging and real-time optical imaging, and the presence of AuNP is a valuable addition to CT imaging. Furthermore, the fabricated particle exhibits anti-Stokes properties, which makes it suitable for use as a background-free biological imaging agent. As a result, R6G-conjugated AuNP is an effective theranostic agent that prevents the progression of cancer and MDR bacteria, along with contrasting abilities in medical imaging with minimal toxicity observed in in vitro and in vivo assays using zebrafish embryos.


Assuntos
Nanopartículas Metálicas , Nanopartículas , Neoplasias , Fotoquimioterapia , Animais , Fotoquimioterapia/métodos , Ouro/farmacologia , Espécies Reativas de Oxigênio , Medicina de Precisão , Peixe-Zebra , Nanopartículas Metálicas/uso terapêutico , Fármacos Fotossensibilizantes/uso terapêutico , Rodaminas , Bactérias , Linhagem Celular Tumoral , Neoplasias/tratamento farmacológico
15.
Turk J Chem ; 47(4): 667-688, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38174062

RESUMO

Cascade molecules are nearly uniform-sized macromolecules of small molecules or linear polymer cores built around symmetric branching units. A wide range of biological properties can be achieved with phosphorus-containing dendrimers, depending on their terminal functions, ranging from biomaterials to imaging, drug delivery, and acting as a drug by themselves. This feature article presents significant examples of phosphorus-containing dendrimers used to develop biochips, support cell cultures, carry or deliver biomacromolecules and drugs, bioimaging, and combinational benefits. Because of the thermal stability, ferrocene function, and physical and chemical properties of phosphorus, dendrimers show greater rigidity, mobility, and strength. These dendrimers will be discussed as having a favorable effect on cell growths, especially on neuronal cells, as well as human immune cells like natural killer cells and monocytes, which have a crucial part in preventing cancerous and viral infections. Several phosphorus dendrimers are effective as drugs by themselves (drug per se) and show their activity against neurodegenerative diseases, cancer, inflammation, ocular hypertension, and transmissible spongiform encephalopathies (TSEs) in both in vivo and in vitro. The present review discusses the synthetic route, fabrications, and biomedical applications of phosphorus-containing dendrimers. The toxicity of these dendrimers was also reported.

16.
Artigo em Inglês | MEDLINE | ID: mdl-36212948

RESUMO

Photodynamic therapy (PDT) is a well-known remedial treatment for cancer, infections, and various other diseases. PDT uses nontoxic dyes called photosensitizers (PS) that are activated in visible light at the proper wavelength to generate ROS (reactive oxygen species) that aid in killing tumor cells and destroying pathogenic microbes. Deciding a suitable photosensitizer is essential for enhancing the effectiveness of photodynamic therapy. It is challenging to choose the photosensitizer that is appropriate for specific pathological circumstances, such as different cancer species. Porphyrin, chlorin, and bacteriochlorin are tetrapyrroles used with proper functionalization in PDT, among which some compound has been clinically approved. Most photosensitizers are hydrophobic, have minimum solubility, and exhibit cytotoxicity due to the dispersion in biological fluid. This paper reviewed some nanotechnology-based strategies to overcome these drawbacks. In PDT, metal nanoparticles are widely used due to their enhanced surface plasmon resonance. The self-assembled nano-drug carriers like polymeric micelles, liposomes, and metal-based nanoparticles play a significant role in solubilizing the photosensitizer to make them biocompatible.

17.
Bionanoscience ; 12(3): 1018-1031, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35755139

RESUMO

Nanotechnology has a versatile use in the field of disease therapy, targeted drug delivery, biosensing, and environmental protection. The cross-linked nanosponges are one of the types of nanostructures that provide huge application in the biomedical field. They are available up to the fourth generation and can act as a payload for both kinds of hydrophilic and hydrophobic drugs. There are different methods available for the synthesis of these nanosponges as well as loading the drugs inside them. A variety of approved drugs based on nanosponges are already in the market including drugs for cancer. Other applications include the uses of nanosponges as topical agent, in improving solubility, as protein carrier, in chemical sensors, in wastewater remediation, and in agriculture. The present review discusses in detail about different applications of nanosponges and also mentions about the recent SARS-CoV-2 management using nanosponges.

18.
Int J Neurosci ; : 1-12, 2022 Jun 27.
Artigo em Inglês | MEDLINE | ID: mdl-35694981

RESUMO

BACKGROUND: Alzheimer's disease (AD) is diagnosed with the deposition of insoluble ß-amyloid (Aß) peptides in the neuropil of the brain leading to dementia. The extracellular deposition of the fibrillar Aß peptide on the neurons is known as senile plaques. Therefore, Aß degradation and clearance from the human body is a promising therapeutic approach in the medication of AD. METHODS: In the current study, the enzyme lumbrokinase (LK) was extracted and purified from earthworm and its activity was utilized toward Aß 1-42 amyloids degradation in vitro alongside with an additional enzyme serratiopeptidase (SP) considering nattokinase (NK) as a standard. RESULTS: The output of this study revealed that preformed Aß 1-42 amyloids was disintegrated by both LK and SP, as demonstrated from fluorescence assay using Thioflavin T dye. In addition, dynamic light scattering study revealed the lower size of the preformed fibrils Aß 1-42 at various time intervals after incubation with the enzymes LK and SP. Furthermore, in silico approach showed high affinity thermodynamically favorable interaction of LK as well as SP toward Aß 1-42 amyloid. Finally, the toxicity of degraded preformed Aß 1-42 amyloid was assessed by MTT assay which showed reduced toxicity of enzyme treated Aß 1-42 amyloid compared to only Aß 1-42 amyloid. CONCLUSION: The findings of the present study indicated that LK and SP, not only had Aß 1-42 amyloid degrading potential, but also could reduce the toxicity which can make them a suitable drug candidate for AD. Furthermore, the in vivo studies are needed to be executed in future.

19.
Appl Biochem Biotechnol ; 194(9): 4187-4219, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-35551613

RESUMO

Nanotechnology sculptures the current scenario of science and technology. The word nano refers 'small' which ranges from 10 to 100 nm in size. Silver and gold nanoparticles can be synthesized at nanoscale and have unique biological properties like antibacterial, antifungal, antiviral, antiparasitic, antiplatelet, anti-inflammatory, and anti-tumor activity. In this mini review, we shall discuss the various applications of silver and gold nanoparticles (AuNPs) in the field of therapy, imaging, biomedical devices and in cancer diagnosis. The usage of silver nanoparticles(AgNPs) in dentistry and dental implants, therapeutic abilities like wound dressings, silver impregnated catheters, ventricular drainage catheters, combating orthopedic infections, and osteointegration will be elaborated. Gold nanoparticles in recent years have garnered large importance in bio medical applications. They are being used in diagnosis and have recently seen a surge in therapeutics. In this mini review, we shall see about the various applications of AuNP and AgNP, and highlight their evolution in theranostics.


Assuntos
Ouro , Nanopartículas Metálicas , Antibacterianos/uso terapêutico , Ouro/uso terapêutico , Nanopartículas Metálicas/uso terapêutico , Medicina de Precisão , Prata
20.
Recent Adv Food Nutr Agric ; 13(1): 51-58, 2022 Nov 14.
Artigo em Inglês | MEDLINE | ID: mdl-35638282

RESUMO

BACKGROUND: Essential oils that are extracted from plants have shown beneficial effects on humans and animals, evidenced by traditional medicine. They possess many essential phytocomponents that act as antimicrobial agents, and most of them are safe for external usage. INTRODUCTION: Lemongrass essential oil is extracted from the grass, such as Cymbopogon flexuosus, and is used for antimicrobial activity for a long time. The efficacy of this oil is limited due to the poor solubility and microbial penetration, easy vaporization, and lower stability. Nanoformulations and nanoencapsulations are nanotechnology fields that aim to improve the bioavailability of many natural compounds and enhance their stability. Lemongrass oil has also been nanoformulated as nanoemulsion, and various antimicrobial activities against various pathogens have been demonstrated, which are superior to free lemongrass oil. METHODOLOGY: We have used the search engines PubMed and Google Scholar for the mentioned keywords and selected the recent references related to this topic. CONCLUSION: In this review, we have discussed various antimicrobial properties of lemongrass essential oil nanoemulsion and its application, such as antibacterial, antifungal, pesticidal, food preservative, and antibiofilm activity.


Assuntos
Anti-Infecciosos , Óleos Voláteis , Praguicidas , Animais , Humanos , Conservantes de Alimentos , Óleos Voláteis/farmacologia , Anti-Infecciosos/farmacologia
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