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1.
J Food Sci Technol ; 57(4): 1191-1204, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32180616

RESUMO

Phoenix dactylifera (date palm) is a member of the genus Phoenix belonging to family Arecaceae. It is widely cultivated for its edible fruits and kernels. Dates have been used for both dietary purposes as well as for their phytomedicinal impacts against the variety of diseases. Date fruits are rich in alkaloids, protein, carbohydrate, fatty acid (linoleic, lauric, palmitic, and stearic acid), carotenoids, vitamins, polyphenolic compounds, flavonoids, and tannins along with different types of nutrients like potassium, calcium, magnesium, and phosphorus. Due to the presence of the variety of phytochemicals, they have greater impact on human health. They have strong antioxidant potential. It has been proposed now as a potential source of several unique medical and industrial products. In literature, much information is available on botanical descriptions, agriculture technology, and utilization in therapeutic intervention, but a little description is accessible on phytochemical relevance, formulation strategies, nutritional impact, and bioprocess technology. Therefore, the present review provides comprehensive information on the phytochemical relevance, pharmacology/bioactivity, pharmaceutical impact, their scope in bioprocess technology and nutraceutical values of date palm. According to all collected information, every portion of the plant has some beneficial properties that can serve as a source of medicine and nutraceutical.

2.
Comput Biol Med ; 178: 108702, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38878397

RESUMO

Artificial intelligence (AI) has emerged as a powerful tool to revolutionize the healthcare sector, including drug delivery and development. This review explores the current and future applications of AI in the pharmaceutical industry, focusing on drug delivery and development. It covers various aspects such as smart drug delivery networks, sensors, drug repurposing, statistical modeling, and simulation of biotechnological and biological systems. The integration of AI with nanotechnologies and nanomedicines is also examined. AI offers significant advancements in drug discovery by efficiently identifying compounds, validating drug targets, streamlining drug structures, and prioritizing response templates. Techniques like data mining, multitask learning, and high-throughput screening contribute to better drug discovery and development innovations. The review discusses AI applications in drug formulation and delivery, clinical trials, drug safety, and pharmacovigilance. It addresses regulatory considerations and challenges associated with AI in pharmaceuticals, including privacy, data security, and interpretability of AI models. The review concludes with future perspectives, highlighting emerging trends, addressing limitations and biases in AI models, and emphasizing the importance of collaboration and knowledge sharing. It provides a comprehensive overview of AI's potential to transform the pharmaceutical industry and improve patient care while identifying further research and development areas.


Assuntos
Inteligência Artificial , Sistemas de Liberação de Medicamentos , Humanos , Desenvolvimento de Medicamentos/métodos , Descoberta de Drogas/métodos
3.
BMC Chem ; 18(1): 204, 2024 Oct 19.
Artigo em Inglês | MEDLINE | ID: mdl-39427218

RESUMO

The regulatory role of zinc in bone formation extends to the activation of proteins associated with bone homeostasis. Furthermore, copper is well known for its antibacterial properties. This dual function underscores the significance of zinc and copper in maintaining a balance of bone structure and function. In light of the aforementioned, zinc sulphide/copper oxide nanocomposites were created in this instance using a straightforward coprecipitation technique. Copper oxide was used as a nanocomposite to improve the structural, morphological, and biological performance of zinc sulphide nanoparticles. The X-ray diffraction pattern confirmed a transformation in the crystal structure from cubic to rhombohedral, along with increase in intensity. Fourier transforms infrared analysis indicated the presence of functional groups. Scanning electron microscopy images demonstrated a morphological shift from non-uniform to distinct spherical nanoparticles, impacting the enhancement of material properties. The pathogenic activity of the zinc sulphide/copper oxide nanocomposites was tested against nine bacterial strains. In antimicrobial testing, zinc sulphide/copper oxide nanocomposites showed promising results, particularly against Klebsiella pneumoniae (zone of inhibition: 14 mm at 100 µg/mL compared to 7 mm by standard) and Escherichia coli (zone of inhibition: 11 mm at 100 µg/mL compared to 10 mm by standard) after 24 h with zone of inhibition matching or exceeding that of the standard (chloramphenicol). Zinc sulphide nanoparticles and zinc sulphide/copper oxide nanocomposites were evaluated for their antifungal activity against fungal stains from Trichophyton rubrum, Aspergillus niger, and Aspergillus flavus. After a 24-h period, it was discovered that zinc sulphide/copper oxide nanocomposites were effective against Aspergillus flavus (zone of inhibition: 19.4 mm at 100 µg/mL compared to 6.3 mm by standard) at all concentrations (25-100 mg/mL), with zones of inhibition identical to or greater than those of the standard (fluconazole). Certainly, based on these results, zinc sulphide/copper oxide nanocomposites could be promising materials for drug delivery.Clinical trial registration: Not applicable.

4.
Front Mol Biosci ; 11: 1421959, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39355534

RESUMO

Ocular drug delivery presents significant challenges due to intricate anatomy and the various barriers (corneal, tear, conjunctival, blood-aqueous, blood-retinal, and degradative enzymes) within the eye. Lipid-based nanoparticles (LNPs) have emerged as promising carriers for ocular drug delivery due to their ability to enhance drug solubility, improve bioavailability, and provide sustained release. LNPs, particularly solid lipid nanoparticles (SLNs), nanostructured lipid carriers (NLCs), and cationic nanostructured lipid carriers (CNLCs), have emerged as promising solutions for enhancing ocular drug delivery. This review provides a comprehensive summary of lipid nanoparticle-based drug delivery systems, emphasizing their biocompatibility and efficiency in ocular applications. We evaluated research and review articles sourced from databases such as Google Scholar, TandFonline, SpringerLink, and ScienceDirect, focusing on studies published between 2013 and 2023. The review discusses the materials and methodologies employed in the preparation of SLNs, NLCs, and CNLCs, focusing on their application as proficient carriers for ocular drug delivery. CNLCs, in particular, demonstrate superior effectiveness attributed due to their electrostatic bioadhesion to ocular tissues, enhancing drug delivery. However, continued research efforts are essential to further optimize CNLC formulations and validate their clinical utility, ensuring advancements in ocular drug delivery technology for improved patient outcomes.

5.
Chemosphere ; 358: 142235, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38705416

RESUMO

Ultraviolet (UV) radiation is a major contributor to skin aging, cancer, and other detrimental health effects. Sunscreens containing FDA-approved UV filters, like avobenzone, offer protection but suffer from photodegradation and potential phototoxicity. Encapsulation, antioxidants, and photostabilizers are strategies employed to combat these drawbacks. Octocrylene, an organic UV filter, utilizes nanotechnology to enhance sun protection factor (SPF). This review examines recent literature on octocrylene-enriched sunscreens, exploring the interplay between environmental impact, nanotechnological advancements, and clinical trial insights. A critical focus is placed on the environmental consequences of sunscreen use, particularly the potential hazards UV filters pose to marine ecosystems. Research in the Mediterranean Sea suggests bacterial sensitivity to these filters, raising concerns about their integration into the food chain. This review aims to guide researchers in developing effective strategies for photostabilization of UV filters. By combining encapsulation, photostabilizers, and antioxidants, researchers can potentially reduce phototoxic effects and contribute to developing more environmentally friendly sunscreens.


Assuntos
Protetores Solares , Raios Ultravioleta , Protetores Solares/química , Protetores Solares/toxicidade , Humanos , Acrilatos/química , Nanotecnologia , Antioxidantes/química , Fator de Proteção Solar
6.
Artigo em Inglês | MEDLINE | ID: mdl-38963550

RESUMO

Drug targeting for brain malignancies is restricted due to the presence of the blood-brain barrier (BBB) and blood-brain tumor barrier (BBTB), which act as barriers between the blood and brain parenchyma. Certainly, the limited therapeutic options for brain malignancies have made notable progress with enhanced biological understanding and innovative approaches, such as targeted therapies and immunotherapies. These advancements significantly contribute to improving patient prognoses and represent a promising shift in the landscape of brain malignancy treatments. A more comprehensive understanding of the histology and pathogenesis of brain malignancies is urgently needed. Continued research focused on unraveling the intricacies of brain malignancy biology holds the key to developing innovative and tailored therapies that can improve patient outcomes. Lipid nanocarriers are highly effective drug delivery systems that significantly improve their solubility, bioavailability, and stability while also minimizing unwanted side effects. Surface-modified lipid nanocarriers (liposomes, niosomes, solid lipid nanoparticles, nanostructured lipid carriers, lipid nanocapsules, lipid-polymer hybrid nanocarriers, lipoproteins, and lipoplexes) are employed to improve BBB penetration and uptake through various mechanisms. This systematic review illuminates and covers various topics related to brain malignancies. It explores the different methods of drug delivery used in treating brain malignancies and delves into the benefits, limitations, and types of brain-targeted lipid-based nanocarriers. Additionally, this review discusses ongoing clinical trials and patents related to brain malignancy therapies and provides a glance into future perspectives for treating this condition.

7.
Curr Drug Deliv ; 2024 Feb 22.
Artigo em Inglês | MEDLINE | ID: mdl-38409707

RESUMO

The utilization of novel drug delivery systems loaded with essential oils has gained significant attention as a promising approach for biomedical applications in recent years. Plants possess essential oils that exhibit various medicinal properties, i.e., anti-oxidant, anti-microbial, anti- inflammatory, anti-cancer, immunomodulatory, etc., due to the presence of various phytoconstituents, including terpenes, phenols, aldehydes, ketones, alcohols, and esters. An understanding of conventional and advanced extraction techniques of Essential Oils (EOs) from several plant sources is further required before considering or loading EOs into drug delivery systems. Therefore, this article summarizes the various extraction techniques of EOs and their existing limitations. The in-built biological applications of EOs are of prerequisite importance for treating several diseases. Thus, the mechanisms of action of EOs for anti-inflammatory, anti-oxidant, anti-bacterial activities, etc., have been further explored in this article. The encapsulation of essential oils in micro or nanometric systems is an intriguing technique to render adequate stability to the thermosensitive compounds and shield them against environmental factors that might cause chemical degradation. Thus, the article further summarizes the advanced drug delivery approaches loaded with EOs and current challenges in the future outlook of EOs for biomedical applications.

8.
ACS Biomater Sci Eng ; 10(1): 271-297, 2024 Jan 08.
Artigo em Inglês | MEDLINE | ID: mdl-38096426

RESUMO

Nanotechnology has emerged as a transformative pathway in vaccine research and delivery. Nanovaccines, encompassing lipid and nonlipid formulations, exhibit considerable advantages over traditional vaccine techniques, including enhanced antigen stability, heightened immunogenicity, targeted distribution, and the potential for codelivery with adjuvants or immune modulators. This review provides a comprehensive overview of the latest advancements and applications of lipid and non-lipid-based nanovaccines in current vaccination strategies for immunization. The review commences by outlining the fundamental concepts underlying lipid and nonlipid nanovaccine design before delving into the diverse components and production processes employed in their development. Subsequently, a comparative analysis of various nanocarriers is presented, elucidating their distinct physicochemical characteristics and impact on the immune response, along with preclinical and clinical studies. The discussion also highlights how nanotechnology enables the possibility of personalized and combined vaccination techniques, facilitating the creation of tailored nanovaccines to meet the individual patient needs. The ethical aspects concerning the use of nanovaccines, as well as potential safety concerns and public perception, are also addressed. The study underscores the gaps and challenges that must be overcome before adopting nanovaccines in clinical practice. This comprehensive analysis offers vital new insights into lipid and nonlipid nanovaccine status. It emphasizes the significance of continuous research, collaboration among interdisciplinary experts, and regulatory measures to fully unlock the potential of nanotechnology in enhancing immunization and ensuring a healthier, more resilient society.


Assuntos
COVID-19 , Nanopartículas , Vacinas , Humanos , Nanovacinas , Nanopartículas/uso terapêutico , COVID-19/prevenção & controle , Vacinas/uso terapêutico , Lipídeos
9.
Front Microbiol ; 15: 1413250, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39104592

RESUMO

Chikungunya virus (CHIKV), a single-stranded RNA virus transmitted by Aedes mosquitoes, poses a significant global health threat, with severe complications observed in vulnerable populations. The only licensed vaccine, IXCHIQ, approved by the US FDA, is insufficient to address the growing disease burden, particularly in endemic regions lacking herd immunity. Monoclonal antibodies (mAbs), explicitly targeting structural proteins E1/E2, demonstrate promise in passive transfer studies, with mouse and human-derived mAbs showing protective efficacy. This article explores various vaccine candidates, including live attenuated, killed, nucleic acid-based (DNA/RNA), virus-like particle, chimeric, subunit, and adenovirus vectored vaccines. RNA vaccines have emerged as promising candidates due to their rapid response capabilities and enhanced safety profile. This review underscores the importance of the E1 and E2 proteins as immunogens, emphasizing their antigenic potential. Several vaccine candidates, such as CHIKV/IRES, measles vector (MV-CHIK), synthetic DNA-encoded antibodies, and mRNA-lipid nanoparticle vaccines, demonstrate encouraging preclinical and clinical results. In addition to identifying potential molecular targets for antiviral therapy, the study looks into the roles played by Toll-like receptors, RIG-I, and NOD-like receptors in the immune response to CHIKV. It also offers insights into novel tactics and promising vaccine candidates. This article discusses potential antiviral targets, the significance of E1 and E2 proteins, monoclonal antibodies, and RNA vaccines as prospective Chikungunya virus vaccine candidates.

10.
Sci Rep ; 14(1): 3705, 2024 02 14.
Artigo em Inglês | MEDLINE | ID: mdl-38355697

RESUMO

Nanoengineered chitosan functionalized titanium dioxide biohybrids (CTiO2@NPs) were prepared with Amomum subulatum Roxb extract via one-pot green method and assessed by UV-Vis spectroscopy, XRD, SEM and EDAX analyses. As revealed by XRD pattern, the nanohybrids exhibits a rutile TiO2 crystallites around 45 nm in size. The emergence of the Ti-O-Ti bond is identified by observing a peak between 400 and 800 cm-1. A wide bandgap (4.8 eV) has been observed in CTiO2@NPs, due to the quantum confinement effects and the oxygen vacancies reveal the intriguing potential of developed nanohybrids for various applications. Surface flaws were identified by observing an emission band at 382, 437, 482, 517, and 556 nm. They also exhibit better antibacterial performances using well diffusion method against Staphylococcus aureus, Bacillus substilis, Klebsiella pneumonia, and Escherichia coli. CTiO2@NPs were discovered to have free radical scavenging activity on DPPH analysis and exhibit IC50 value as 95.80 µg/mL and standard (Vitamin C) IC50 is 87.62 µg/mL. CTiO2@NPs exhibited better anticancer properties against the osteosarcoma (MG-63) cell line. All these findings suggest that there is a forum for further useful therapeutic applications. Therefore, we claim that nano-engineered carbohydrated TiO2 phytohybrid is a promising solution for bacterial infections and bone cancer.


Assuntos
Infecções Bacterianas , Quitosana , Nanopartículas Metálicas , Neoplasias , Humanos , Antibacterianos/farmacologia , Antibacterianos/química , Titânio/farmacologia , Titânio/química , Infecções Bacterianas/tratamento farmacológico , Nanopartículas Metálicas/química
11.
Artigo em Inglês | MEDLINE | ID: mdl-37904558

RESUMO

The food business makes extensive use of lipophilic bioactive substances derived from plants, such as phytosterols, antimicrobials, antioxidants, ω3 fatty acids, tastes, and countless other constituennts. The preponderance of these bioactive substances, nevertheless, is just about unsolvable in hydric solution and unbalanced at a particular eco-friendly provocation, such as sunlight, temperature, and oxygen, in construction, transference, storage, and employment, for example, icy, chilling, desiccation, warm air dealing out, or machine-driven agitation. According to this standpoint, there are high-tech hitches that must be resolved to inform functionality for the social figure due to the lipophilic bioactive dearth of solubilization, bioavailability, and permanency. This leads to failure in commercialization and quality enhancement. Nanotechnology can generally be used to manufacture nano-kinds of stuff like nano-emulsion, nanoparticles, nanostructured materials, and nanocomposites. The creation of functional foods has attracted a huge interest as our consideration of their affiliation with nourishment and human health has grown. There are still a number of problems that need to be fixed, such as finding useful substances, figuring out ideal intake amounts, and fashioning apt food conveyance systems in addition to product compositions. In several of these areas, new methods and materials developed through nanotechnology have the potential to offer fresh explanations. The present article provides a thorough examination of nanotechnologies employed in the development of functional foods. It outlines the current patterns and forthcoming outlooks of sophisticated nanomaterials in the food industry, with particular emphasis on their applications in processing, packaging, safety, and preservation. The utilization of nanotechnologies in the food industry can improve the "bioavailability, taste, texture, and consistency of food products". This is accomplished by manipulating the particle size, potential cluster formation, and surface charge of food nanomaterials. Furthermore, this paper examines the utilization of nano-delivery systems for administering nutraceuticals, the cooperative effects of nanomaterials in safeguarding food, and the implementation of nano-sensors in intelligent food packaging to monitor the quality of stored food. Additionally, the customary techniques employed for evaluating the influence of nanomaterials on biological systems are also addressed. This review gives a general synopsis of the newfangled possibilities and hitches for systems built on nanotechnology for the creation of functional foods in the future.

12.
Front Immunol ; 14: 1264502, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37818370

RESUMO

The outbreak of a fatal black fungus infection after the resurgence of the cadaverous COVID-19 has exhorted scientists worldwide to develop a nutshell by repurposing or designing new formulations to address the crisis. Patients expressing COVID-19 are more susceptible to Mucormycosis (MCR) and thus fall easy prey to decease accounting for this global threat. Their mortality rates range around 32-70% depending on the organs affected and grow even higher despite the treatment. The many contemporary recommendations strongly advise using liposomal amphotericin B and surgery as first-line therapy whenever practicable. MCR is a dangerous infection that requires an antifungal drug administration on appropriate prescription, typically one of the following: Amphotericin B, Posaconazole, or Isavuconazole since the fungi that cause MCR are resistant to other medications like fluconazole, voriconazole, and echinocandins. Amphotericin B and Posaconazole are administered through veins (intravenously), and isavuconazole by mouth (orally). From last several years so many compounds are developed against invasive fungal disease but only few of them are able to induce effective treatment against the micorals. Adjuvant medicines, more particularly, are difficult to assess without prospective randomized controlled investigations, which are challenging to conduct given the lower incidence and higher mortality from Mucormycosis. The present analysis provides insight into pathogenesis, epidemiology, clinical manifestations, underlying fungal virulence, and growth mechanisms. In addition, current therapy for MCR in Post Covid-19 individuals includes conventional and novel nano-based advanced management systems for procuring against deadly fungal infection. The study urges involving nanomedicine to prevent fungal growth at the commencement of infection, delay the progression, and mitigate fatality risk.


Assuntos
COVID-19 , Mucormicose , Micoses , Humanos , Anfotericina B/farmacologia , Anfotericina B/uso terapêutico , Mucormicose/tratamento farmacológico , Virulência , Micoses/tratamento farmacológico
13.
Travel Med Infect Dis ; 56: 102636, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37633474

RESUMO

Monkeypox (Mpox) is a transmissible infection induced by the Monkeypox virus (a double-stranded DNA virus), recognised under the family orthopoxvirus genus. Monkeypox, like endemic diseases, is a substantial concern worldwide; thus, comprehending the pathogenesis and mutagenesis of amino acids is indispensable to combat the infection. According to the World Health Organization's report, about 89 thousand cases with 160 mortalities have been reported from 114 countries worldwide. The conventional orthopoxvirus vaccines developed on live attenuated viruses exempted any clinical validation from combating monkeypox due to inadequate immunogenicity, toxicity, instability, and multiple doses. Therefore, novel drug delivery systems come into the conception with high biological and mechanical characteristics to address the resurgence of Global Monkeypox. The edges of metallic biomaterials, novel molecules, and vaccine development in targeted therapy increase the modulation of the immune response and blockage of host-virus interaction, with enhanced stability for the antigens. Thus, this review strives to comprehend the viral cell pathogenesis concerning amino acid mutagenesis and current epidemiological standards of the Monkeypox disease across the globe. Furthermore, the review also recapitulates the various clinical challenges, current therapies, and progressive nanomedicine utilisation in the Monkeypox outbreak reinforced by various clinical trial reports. The contemporary challenges of novel drug delivery systems in Monkeypox treatment cannot be overlooked, and thus, authors have outlined the future strategies to develop successful nanomedicine to combat monkeypox. Future pandemics are inevitable but can be satisfactorily handled if we comprehend the crises, innovate, and develop cutting-edge technologies, especially by delving into frontiers like nanotechnology.


Assuntos
Mpox , Orthopoxvirus , Humanos , Mpox/tratamento farmacológico , Mpox/epidemiologia , Surtos de Doenças , Sistemas de Liberação de Medicamentos , Doenças Endêmicas , Monkeypox virus/genética
14.
Saudi Pharm J ; 19(3): 185-91, 2011 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-23960758

RESUMO

Terbutaline sulfate (TBS) was assayed in biological samples by validated HPTLC method. Densitometric analysis of TBS was carried out at 366 nm on precoated TLC aluminum plates with silica gel 60F254 as a stationary phase and chloroform-methanol (9.0:1.0, v/v) as a mobile phase. TBS was well resolved at RF 0.34 ± 0.02. In all matrices, the calibration curve appeared linear (r (2) â©¾ 0.9943) in the tested range of 100-1000 ng spot(-1) with a limit of quantification of 18.35 ng spot(-1). Drug recovery from biological fluids averaged ⩾95.92%. In both matrices, rapid degradation of drug favored and the T 0.5 of drug ranged from 9.92 to 12.41 h at 4 °C and from 6.31 to 9.13 h at 20 °C. Frozen at -20 °C, this drug was stable for at least 2 months (without losses >10%). The maximum plasma concentration (Cpmax) was found to be 5875.03 ± 114 ng mL(-1), which is significantly higher than the maximum saliva concentration (Csmax, 1501.69 ± 96 ng mL(-1)). Therefore, the validated method could be used to carry out pharmacokinetic studies of the TBS from novel drug delivery systems.

16.
Recent Pat Inflamm Allergy Drug Discov ; 7(1): 49-61, 2013 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-22663775

RESUMO

Particle engineering is the prime focus to improve pulmonary drug targeting with the splendor of nanomedicines. In recent years, submicron particles have emerged as prettyful candidate for improved fludisation and deposition. For effective deposition, the particle size must be in the range of 0.5-5 µm. Inhalers design for the purpose of efficient delivery of powders to lungs is again a crucial task for pulmonary scientists. A huge number of DPI devices exist in the market, a significant number are awaiting FDA approval, some are under development and a large number have been patented or applied for patent. Even with superior design, the delivery competence is still deprived, mostly due to fluidisation problems which cause poor aerosol generation and deposition. Because of the cohesive nature and poor flow characteristics, they are difficult to redisperse upon aerosolization with breath. These problems are illustrious in aerosol research, much of which is vastly pertinent to pulmonary therapeutics. A technical review is presented here of advances that have been utilized in production of submicron drug particles, their in vitro/in vivo evaluations, aerosol effects and pulmonary fate of inhaled submicron powders.


Assuntos
Sistemas de Liberação de Medicamentos , Desenho de Fármacos , Pneumopatias/tratamento farmacológico , Pulmão/efeitos dos fármacos , Nanoestruturas , Material Particulado , Administração por Inalação , Animais , Humanos , Sprays Nasais , Tamanho da Partícula
17.
Int J Pharm ; 434(1-2): 59-69, 2012 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-22583847

RESUMO

Terbutaline submicron particles (SµTBS) were prepared by nanoprecipitation technique followed by spray drying for deep lungs deposition. Inhalable SµTBS particles were 645.16 nm of diameter with 0.11µm of MMAD, suggested for better aerosol effects. Both submicron and micron-sized TBS particles were administered in rodents administered via major delivery routes, and their biological effects were compared by using UHPLC/ESI-q-TOF-MS method. TBS was found stable in all exposed conditions with 96.28-99.0% of recovery and <4.34% of accuracy (CV). An inhalation device was designed and validated to deliver medicines to lungs, which was found best at dose level of 25mg for 30 min of fluidization. Both submicron and micron particles were compared for in vivo lung deposition and a 1.67 fold increase in concentration was observed for SµTBS exposed by inhalation. Optimized DPI formulation contained lesser fraction of ultrafine particle (<500 nm) with the major fraction of submicron particles (>500 nm), advocated for better targeting to lungs. UHPLC/ESI-q-TOF-MS confirmed that designed submicron particles has been successfully delivered to the lungs. From tongue to lungs, the landing of pulmonary medicines can be improved by submicronization technology.


Assuntos
Agonistas de Receptores Adrenérgicos beta 2/farmacocinética , Sistemas de Liberação de Medicamentos , Pulmão/metabolismo , Terbutalina/farmacocinética , Agonistas de Receptores Adrenérgicos beta 2/administração & dosagem , Aerossóis , Animais , Precipitação Química , Cromatografia Líquida de Alta Pressão/métodos , Estabilidade de Medicamentos , Nebulizadores e Vaporizadores , Tamanho da Partícula , Ratos , Ratos Wistar , Reprodutibilidade dos Testes , Espectrometria de Massas por Ionização por Electrospray/métodos , Terbutalina/administração & dosagem , Distribuição Tecidual
18.
Asian Pac J Trop Med ; 4(12): 964-8, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22118032

RESUMO

OBJECTIVE: To investigate the hepatoprotective potential of Solanum xanthocarpum (Solanaceae) (S. xanthocarpum) in experimental rats to validate its traditional claim. METHODS: 50% ethanolic fruit extract of S. xanthocarpum (SXE, 100, 200 or 400 mg/kg body weight) was administered daily for 14 days in experimental animals. Liver injury was induced chemically, by CCl(4) administration (1 mL/kg i. p.). The hepatoprotective activity was assessed using various biochemical parameters like aspartate aminotransferase (AST), alanine aminotransferase (ALT), Serum alkaline phosphatise (SALP) and total bilirubin. Meanwhile, in vivo antioxidant activities as lipid peroxidation (LPO), reduced glutathione (GSH), superoxide dismutase (SOD) and catalase (CAT) were screened along with histopathological studies. RESULTS: Obtained results demonstrated that the treatment with SXE significantly (P<0.05-<0.001) and dose-dependently prevented chemically induced increase in serum levels of hepatic enzymes. Furthermore, SXE significantly (up to P<0.001) reduced the lipid peroxidation in the liver tissue and restored activities of defence antioxidant enzymes GSH, SOD and catalase towards normal levels. Histopathology of the liver tissue showed that SXE attenuated the hepatocellular necrosis and led to reduction of inflammatory cells inflltration. CONCLUSIONS: The results of this study strongly indicate the protective effect of SXE against acute liver injury which may be attributed to its hepatoprotective activity, and there by scientifically support its traditional use.


Assuntos
Doença Hepática Induzida por Substâncias e Drogas/tratamento farmacológico , Frutas , Fígado/efeitos dos fármacos , Fitoterapia , Extratos Vegetais/farmacologia , Solanum , Alanina Transaminase/sangue , Fosfatase Alcalina/sangue , Animais , Aspartato Aminotransferases/sangue , Tetracloreto de Carbono , Catalase/sangue , Doença Hepática Induzida por Substâncias e Drogas/etiologia , Relação Dose-Resposta a Droga , Glutationa/sangue , Peroxidação de Lipídeos/efeitos dos fármacos , Fígado/enzimologia , Medicina Tradicional , Camundongos , Ratos , Ratos Sprague-Dawley , Solanum/enzimologia , Superóxido Dismutase/sangue , Resultado do Tratamento
19.
Int Immunopharmacol ; 2010 Mar 18.
Artigo em Inglês | MEDLINE | ID: mdl-20304106

RESUMO

This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy.

20.
Anal Sci ; 26(4): 467-72, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-20410570

RESUMO

A stability-indicating high-performance thin-layer chromatographic (HPTLC) method has been developed for the determination of terbutaline sulfate (TBS) as a bulk drug and in pharmaceutical formulations (submicronized dry powder inhalers). The separation was achieved on TLC aluminum plates precoated with silica gel 60F-254 using chloroform-methanol (9.0:1.0 v/v) as mobile phase. The densitometric analysis was carried out at 366 nm wavelength. Compact spots appeared at R(f) = 0.34 +/- 0.02. For the proposed procedure, linearity (r(2) = 0.9956 +/- 0.0015), limit of quantification (28.35 ng spot(-1)), limit of detection (9.41 ng spot(-1)), recovery (97.06-99.56%), and precision (< or = 1.86) were found to be satisfactory. TBS was subjected to acid and alkali hydrolyses, oxidation and photodegradation treatments. The degraded products were well separated from the pure drug. Statistical analysis reveals that the developed method has potential for routine analysis and stability testing of terbutaline sulfate in pharmaceutical drug delivery systems.


Assuntos
Cromatografia em Camada Fina/métodos , Nebulizadores e Vaporizadores , Terbutalina/análise , Química Farmacêutica , Pós , Reprodutibilidade dos Testes , Terbutalina/isolamento & purificação
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