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Current Perspectives on Biological Screening of Newly Synthetised Sulfanilamide Schiff Bases as Promising Antibacterial and Antibiofilm Agents. Pharmaceuticals (Basel) 2024; 17:405. [PMID: 38675368 PMCID: PMC11053482 DOI: 10.3390/ph17040405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/08/2024] [Accepted: 03/19/2024] [Indexed: 04/28/2024] Open
Abstract
Growing resistance to antimicrobials, combined with pathogens that form biofilms, presents significant challenges in healthcare. Modifying current antimicrobial agents is an economical approach to developing novel molecules that could exhibit biological activity. Thus, five sulfanilamide Schiff bases were synthesized under microwave irradiation and characterized spectroscopically and in silico. They were evaluated for their antimicrobial and antibiofilm activities against both Gram-positive and Gram-negative bacterial strains. Their cytotoxic potential against two cancer cell lines was also determined. Gram-positive bacteria were susceptible to the action of these compounds. Derivatives 1b and 1d inhibited S. aureus's growth (MIC from 0.014 mg/mL) and biofilm (IC from 0.029 mg/mL), while compound 1e was active against E. faecalis's planktonic and sessile forms. Two compounds significantly reduced cell viability at 5 μg/mL after 24 h of exposure (1d-HT-29 colorectal adenocarcinoma cells, 1c-LN229 glioblastoma cells). A docking study revealed the increased binding affinities of these derivatives compared to sulfanilamide. Hence, these Schiff bases exhibited higher activity compared to their parent drug, with halogen groups playing a crucial role in both their antimicrobial and cytotoxic effects.
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Insights into the physico-chemical and biological characterization of sodium lignosulfonate - silver nanosystems designed for wound management. Heliyon 2024; 10:e26047. [PMID: 38384565 PMCID: PMC10878957 DOI: 10.1016/j.heliyon.2024.e26047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 02/06/2024] [Accepted: 02/07/2024] [Indexed: 02/23/2024] Open
Abstract
Chronic wounds represent one of the complications that might occur from the disruption of wound healing process. Recently, there has been a rise in interest in employing nanotechnology to develop novel strategies for accelerating wound healing. The aim of the present study was to use a green synthesis method to obtain AgNPs/NaLS systems useful for wounds management and perform an in-depth investigation of their behavior during and post-synthesis as well as of their biological properties. The colloids obtained from silver nanoparticles (AgNPs) and commercial sodium lignosulfonate (NaLS) in a single-pot aqueous procedure have been fully characterized by UV-Vis, FT-IR, DLS, TEM, XRD, and XPS to evaluate the synthesis efficiency and to provide new insights in the process of AgNPs formation and NaLS behavior in aqueous solutions. The effects of various concentrations of NaLS (0-16 mg/mL) and AgNO3 (0-20 mM) and of two different temperatures on AgNPs formation have been analyzed. Although the room temperature is feasible for AgNPs synthesis, the short mixing at 70 °C significantly increases the speed of nanoparticle formation and storage stability. In all experimental conditions AgNPs of 20-40 nm in size have been obtained. The antimicrobial activity assessed quantitatively on clinical and reference bacterial strains, both in suspension and biofilm growth state, revealed a broad antimicrobial spectrum, the most intensive inhibitory effect being noticed against Pseudomonas aeruginosa and Escherichia coli strains. The AgNP/NaLS enhanced the NO extracellular release, potentially contributing to the microbicidal and anti-adherence activity by protein oxidation. Both AgNP/NaLS and NaLS were non-hemolytic (hemolytic index<5%, 2.26 ± 0.13% hemolysis) and biocompatible (102.17 ± 3.43 % HaCaT cells viability). The presence of AgNPs increased the antioxidative activity and induced a significant cytotoxicity on non-melanoma skin cancer cells (62.86 ± 8.27% Cal-27 cells viability). Taken together, all these features suggest the multivalent potential of these colloids for the development of novel strategies for wound management, acting by preventing infection-associated complications and supporting the tissue regeneration.
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Microwave-Assisted Hydrothermal Treatment of Multifunctional Substituted Hydroxyapatite with Prospective Applications in Bone Regeneration. J Funct Biomater 2023; 14:378. [PMID: 37504872 PMCID: PMC10381662 DOI: 10.3390/jfb14070378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/06/2023] [Accepted: 07/14/2023] [Indexed: 07/29/2023] Open
Abstract
Orthopedic bone graft infections are major complications in today's medicine, and the demand for antibacterial treatments is expanding because of the spread of antibiotic resistance. Various compositions of hydroxyapatite (HAp) in which Calcium (Ca2+) ions are substituted with Cerium (Ce3+) and Magnesium (Mg2+) are herein proposed as biomaterials for hard tissue implants. This approach gained popularity in recent years and, in the pursuit of mimicking the natural bone mineral's composition, over 70 elements of the Periodic Table were already reported as substituents into HAp structure. The current study aimed to create materials based on HAp, Hap-Ce, and Hap-Mg using hydrothermal maturation in the microwave field. This route has been considered a novel, promising, and effective way to obtain monodisperse, fine nanoparticles while easily controlling the synthesis parameters. The synthesized HAp powders were characterized morphologically and structurally by XRD diffraction, Dynamic light scattering, zeta potential, FTIR spectrometry, and SEM analysis. Proliferation and morphological analysis on osteoblast cell cultures were used to demonstrate the cytocompatibility of the produced biomaterials. The antimicrobial effect was highlighted in the synthesized samples, especially for hydroxyapatite substituted with cerium. Therefore, the samples of HAp substituted with cerium or magnesium are proposed as biomaterials with enhanced osseointegration, also having the capacity to reduce device-associated infections.
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Antioxidant and Wound Healing Bioactive Potential of Extracts Obtained from Bark and Needles of Softwood Species. Antioxidants (Basel) 2023; 12:1383. [PMID: 37507922 PMCID: PMC10376860 DOI: 10.3390/antiox12071383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 06/28/2023] [Accepted: 06/29/2023] [Indexed: 07/30/2023] Open
Abstract
Interest in the extraction of phytochemical bioactive compounds, especially polyphenols from biomass, has recently increased due to their valuable biological potential as natural sources of antioxidants, which could be used in a wide range of applications, from foods and pharmaceuticals to green polymers and bio-based materials. The present research study aimed to provide a comprehensive chemical characterization of the phytochemical composition of forest biomass (bark and needles) of softwood species (Picea abies L., H. Karst., and Abies alba Mill.) and to investigate their in vitro antioxidant and antimicrobial activities to assess their potential in treating and healing infected chronic wounds. The DPPH radical-scavenging method and P-LD were used for a mechanistic explanation of the biomolecular effects of the investigated bioactive compounds. (+)-Catechin, epicatechin, rutin, myricetin, 4 hydroxybenzoic and p-cumaric acids, kaempherol, and apigenin were the main quantified polyphenols in coniferous biomass (in quantities around 100 µg/g). Also, numerous phenolic acids, flavonoids, stilbenes, terpenes, lignans, secoiridoids, and indanes with antioxidant, antimicrobial, anti-inflammatory, antihemolytic, and anti-carcinogenic potential were identified. The Abies alba needle extract was more toxic to microbial strains than the eukaryotic cells that provide its active wound healing principles. In this context, developing industrial upscaling strategies is imperative for the long-term success of biorefineries and incorporating them as part of a circular bio-economy.
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Modifications in cellular viability, DNA damage and stress responses inflicted in cancer cells by copper-64 ions. Front Med (Lausanne) 2023; 10:1197846. [PMID: 37415761 PMCID: PMC10320858 DOI: 10.3389/fmed.2023.1197846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 05/31/2023] [Indexed: 07/08/2023] Open
Abstract
Due to combined therapeutical emissions, a high linear energy transfer Auger-electrons with the longer ranged β- particles, 64Cu-based radiopharmaceuticals raise particular theragnostic interest in cancer, by joined therapeutic and real-time PET imaging properties. The in vitro study aimed to investigate the biological and molecular background of 64CuCl2 therapy by analyzing the damages and stress responses inflicted in various human normal and tumor cell lines. Colon (HT29 and HCT116) and prostate carcinoma (DU145) cell lines, as well as human normal BJ fibroblasts, were treated up to 72 h with 2-40 MBq/mL 64CuCl2. Radioisotope uptake and retention were assessed, and cell viability/death, DNA damage, oxidative stress, and the expression of 84 stress genes were investigated at various time points after [64Cu]CuCl2 addition. All the investigated cells incorporated 64Cu ions similarly, independent of their tumoral or normal status, but their fate after exposure to [64Cu]CuCl2 was cell-dependent. The most striking cytotoxic effects of the radioisotope were registered in colon carcinoma HCT116 cells, for which a substantial decrease in the number of metabolically active cells, and an increased DNA damage and oxidative stress were registered. The stress gene expression study highlighted the activation of both death and repair mechanisms in these cells, related to extrinsic apoptosis, necrosis/necroptosis or autophagy, and cell cycle arrest, nucleotide excision repair, antioxidant, and hypoxic responses, respectively. The in vitro study indicated that 40 MBq/mL [64Cu]CuCl2 delivers a therapeutic effect in human colon carcinoma, but its use is limited by harmful, yet lower effects on normal fibroblasts. The exposure of tumor cells to 20 MBq/mL [64Cu]CuCl2, might be used for a softer approach aiming for a lower radiotoxicity in normal fibroblasts as compared to tumor cells. This radioactive concentration was able to induce a persistent decrease in the number of metabolically active cells, accompanied by DNA damage and oxidative stress, associated with significant changes in stress gene expression in HCT116 colon cancer cells.
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Abstract
Efficient cloning techniques are a requirement for synthetic biology. This study provides a simplified cloning method based on Golden Gate Assembly that can be used for rapid vector construction. The building of multiple expression vectors with customizable modules is achieved in a timely manner with minimal hands-on time by removing unnecessary steps in the workflow. The authors constructed a total of 21 mammalian episomal expression vectors and conducted a fluorescence expression comparison for different regulatory region combinations post-transfection in HEK293T and HEPG2 cells. Screening revealed that using the EF-1α promoter in combination with the bovine growth hormone polyadenylation sequence seemed to perform best in the types of cells tested compared with other variants.
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P03-13 Investigation of adulterants in herbal weight loss supplements. Toxicol Lett 2022. [DOI: 10.1016/j.toxlet.2022.07.275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Evaluation of fractional flow reserve impacts endovascular management of patients with stable coronary artery disease in the clinical practice. Atherosclerosis 2022. [DOI: 10.1016/j.atherosclerosis.2022.06.941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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High-Efficiency Biocidal Solution Based on Radiochemically Synthesized Cu-Au Alloy Nanoparticles. NANOMATERIALS 2021; 11:nano11123388. [PMID: 34947739 PMCID: PMC8705577 DOI: 10.3390/nano11123388] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/04/2021] [Accepted: 12/10/2021] [Indexed: 01/02/2023]
Abstract
The use of nanotechnologies in the applied biomedical sciences can offer a new way to treat infections and disinfect surfaces, materials, and products contaminated with various types of viruses, bacteria, and fungi. The Cu-Au nanoparticles (NPs) were obtained by an eco-friendly method that allowed the obtaining in a one-step process of size controlled, well dispersed, fully reduced, highly stable NPs at very mild conditions, using high energy ionizing radiations. The gamma irradiation was performed in an aqueous system of Cu2+/Au3+/Sodium Dodecyl Sulfate (SDS)/Ethylene Glycol. After irradiation, the change of color to ruby-red was the first indicator for the formation of NPs. Moreover, the UV-Vis spectra showed a maximum absorption peak between 524 and 540 nm, depending on the copper amount. The Cu-Au NPs presented nearly spherical shapes, sizes between 20 and 90 nm, and a zeta potential of about −44 mV indicating a good electrostatic stability. The biocidal properties performed according to various standards applied in the medical area, in dirty conditions, showed a 5 lg reduction for Staphylococcus aureus, Pseudomonas aeruginosa, and Enterococcus hirae, a 5 lg reduction for both enveloped and non-enveloped viruses such as Adenovirus type 5, Murine Norovirus, and human Coronavirus 229E, and a 4 lg reduction for Candida albicans, respectively. Thus, the radiochemically synthesized Cu-Au alloy NPs proved to have high biocide efficiency against the tested bacteria, fungi, and viruses (both encapsulated and non-encapsulated). Therefore, these nanoparticle solutions are suitable to be used as disinfectants in the decontamination of hospital surfaces or public areas characterized by high levels of microbiological contamination.
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Novel Gel Microemulsion as Topical Drug Delivery System for Curcumin in Dermatocosmetics. Pharmaceutics 2021; 13:pharmaceutics13040505. [PMID: 33916981 PMCID: PMC8067601 DOI: 10.3390/pharmaceutics13040505] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/02/2021] [Accepted: 04/04/2021] [Indexed: 02/07/2023] Open
Abstract
Gel microemulsion combines the advantages of the microemulsion, which can encapsulate, protect and deliver large quantities of active ingredients, and the gel, which is so appreciated in the cosmetic industry. This study aimed to develop and characterize new gel microemulsions suitable for topical cosmetic applications, using grape seed oil as the oily phase, which is often employed in pharmaceuticals, especially in cosmetics. The optimized microemulsion was formulated using Tween 80 and Plurol® Diisostearique CG as a surfactant mix and ethanol as a co-solvent. Three different water-soluble polymers were selected in order to increase the viscosity of the microemulsion: Carbopol® 980 NF, chitosan, and sodium hyaluronate salt. All used ingredients are safe, biocompatible and biodegradable. Curcumin was chosen as a model drug. The obtained systems were physico-chemically characterized by means of electrical conductivity, dynamic light scattering, polarized microscopy and rheometric measurements. Evaluation of the cytotoxicity was accomplished by MTT assay. In the final phase of the study, the release behavior of Curcumin from the optimized microemulsion and two gel microemulsions was evaluated. Additionally, mathematical models were applied to establish the kinetic release mechanism. The obtained gel microemulsions could be effective systems for incorporation and controlled release of the hydrophobic active ingredients.
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Mixed Pluronic-Cremophor Polymeric Micelles as Nanocarriers for Poorly Soluble Antibiotics-The Influence on the Antibacterial Activity. Pharmaceutics 2021; 13:pharmaceutics13040435. [PMID: 33804932 PMCID: PMC8063824 DOI: 10.3390/pharmaceutics13040435] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/21/2021] [Accepted: 03/22/2021] [Indexed: 11/21/2022] Open
Abstract
In this work, novel polymeric mixed micelles from Pluronic F127 and Cremophor EL were investigated as drug delivery systems for Norfloxacin as model antibiotic drug. The optimal molar ratio of surfactants was determined, in order to decrease critical micellar concentration (CMC) and prepare carriers with minimal surfactant concentrations. The particle size, zeta potential, and encapsulation efficiency were determined for both pure and mixed micelles with selected composition. In vitro release kinetics of Norfloxacin from micelles show that the composition of surfactant mixture generates tunable extended release. The mixed micelles exhibit good biocompatibility against normal fibroblasts MRC-5 cells, while some cytotoxicity was found in all micellar systems at high concentrations. The influence of the surfactant components in the carrier on the antibacterial properties of Norfloxacin was investigated. The drug loaded mixed micellar formulation exhibit good activity against clinical isolated strains, compared with the CLSI recommended standard strains (Staphylococcus aureus ATCC 25923, Enterococcus faecalis ATCC 29213, Pseudomonas aeruginosa ATCC 27853, Escherichia coli ATCC 25922). P. aeruginosa 5399 clinical strain shows low sensitivity to Norfloxacin in all tested micelle systems. The results suggest that Cremophor EL-Pluronic F127 mixed micelles can be considered as novel controlled release delivery systems for hydrophobic antimicrobial drugs.
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INFLUENCE OF URSODEOXYCHOLIC ACID ON THE CHOLECYSTOKININ LEVELS IN PATIENTS WITH GASTRO-ESOPHAGEAL REFLUX DISEASE AND TYPE 2 DIABETES MELLITUS. GEORGIAN MEDICAL NEWS 2021:67-71. [PMID: 33964829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Of particular interest is the study of the peculiarities of clinical findings and diagnostics of gastroesophageal reflux disease (GERD) in patients with diabetes mellitus (DM). The aim of the research - to study the dynamics of cholecystokinin (CCK) level on the background of complex therapy using the ursodeoxycholic acid (UDCA) drug in patients with GERD with type 2 DM. 68 patients with combination of type 2 DM and GERD were examined. The levels of CCK were studied in these patients, depending on the clinical forms of GERD, as well as their dynamics on the background of UDCA therapy. More pronounced increase in the serum level of CCK in patients with combination of type 2 DM and extra-esophageal manifestations of GERD was observed. Decrease in the CCK level in 2,4 - 2,7 times was reached on the background of complex therapy with UDCA in patients with combination of type 2 DM and GERD (p<0,01). In patients with type 2 DM and GERD, an increase in blood serum CCK level is observed, especially in case of extra-esophageal form of reflux disease. The maximum concentration of CCK in blood serum was revealed in overweight patients with type 2 DM in case of an extra-esophageal form of GERD. The use of UDC medication in the complex treatment of patients with type 2 DM and GERD leads to a normalization tendency of blood serum CCK levels, as well as to a decrease in body mass in these patients.
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Psychotropic effects of nicotine and cotinine in mice. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.1058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Quantitative assessment of specific carbonic anhydrase inhibitors effect on hypoxic cells using electrical impedance assays. J Enzyme Inhib Med Chem 2017; 32:1079-1090. [PMID: 28783982 PMCID: PMC6010035 DOI: 10.1080/14756366.2017.1355306] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Carbonic anhydrase IX (CA IX) is an important orchestrator of hypoxic tumour environment, associated with tumour progression, high incidence of metastasis and poor response to therapy. Due to its tumour specificity and involvement in associated pathological processes: tumourigenesis, angiogenesis, inhibiting CA IX enzymatic activity has become a valid therapeutic option. Dynamic cell-based biosensing platforms can complement cell-free and end-point analyses and supports the process of design and selection of potent and selective inhibitors. In this context, we assess the effectiveness of recently emerged CA IX inhibitors (sulphonamides and sulphocoumarins) and their antitumour potential using an electrical impedance spectroscopy biosensing platform. The analysis allows discriminating between the inhibitory capacities of the compounds and their inhibition mechanisms. Microscopy and biochemical assays complemented the analysis and validated impedance findings establishing a powerful biosensing tool for the evaluation of carbonic anhydrase inhibitors potency, effective for the screening and design of anticancer pharmacological agents.
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In vitro biocompatibility evaluation of Gadolinium-based nanohydrogels. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Evaluation of methadone and EDDP urinary levels in heroin addict patients during substitution therapy. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.1070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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EFFECTS OF ZINGIBER OFFICINALE ROSCOE FRESH EXTRACT ON AMELANOTIC MELANOMA AND NORMAL SKIN FIBROBLASTS. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 2015; 119:592-6. [PMID: 26204672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
UNLABELLED Zingiber officinale Roscoe is a very important medicinal plant, with a long history of therapeutic uses, especially in oriental traditional medicine. AIM To investigate the cytotoxicity of a fresh ginger extract on some skin tumor cells compared to normal cells. MATERIAL AND METHODS C32 amelanotic melanoma cell line and CCD human skin fibroblasts were used. The fresh extract obtained by crushing ginger rhizome was examined for phenolic content. The in vitro cytotoxicity was examined using phase contrast microscopy and MTT assay for the concentrations of 2 and 4 mg% total phenols. RESULTS Both concentrations used for treatment induced no changes in normal the morphology and viability of fibroblasts compared to control cells. Amelanotic melanoma cells displayed profound changes in cell morphology such as cell shrinkage, rounding-up and membrane blebbing and a decrease in cell viability in a dose-dependent manner. CONCLUSIONS Fresh ginger extract induced no changes in normal skin fibroblast viability, but caused profound cytotoxic effects on amelanotic melanoma. These results could encourage further studies regarding the intimate mechanisms of the antitumor action displayed by the fresh ginger extract.
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Antioxidant and hepatoprotective activity of milk thistle (Silybum marianum L. Gaertn.) seed oil. Open Life Sci 2015. [DOI: 10.1515/biol-2015-0017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
AbstractThis study has assessed the protective efficacy of
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Extraction and HPLC determination of the ascorbic acid content of three indigenous spice plants. JOURNAL OF ANALYTICAL CHEMISTRY 2014. [DOI: 10.1134/s106193481410013x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Antioxidant and hepatoprotective effects of naringenin and its β-cyclodextrin formulation in mice intoxicated with carbon tetrachloride: a comparative study. J Med Food 2014; 17:670-7. [PMID: 24611872 DOI: 10.1089/jmf.2013.0007] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The present study evaluated the antioxidant and hepatoprotective effects of the flavonoid naringenin (NGN) and its β-cyclodextrin formulation at a dose of 50 mg/kg b.w. The assessment was done by the investigation of serum-enzymatic and liver antioxidant activity, histopathological and ultrastructural changes in male Swiss mice, which were subjected to acute experimental intoxication with CCl4. Formulated and free flavonoid were orally given to mice for 7 days and then were intraperitoneally injected with 1.0 mL/kg CCl4 on the 8th day. After 24 h of CCl4 administration, an increase in the levels of transaminases aspartate aminotransferase and alanine aminotransferase activities and malondialdehyde concentration occurred and a significant decrease in superoxide dismutase, catalase glutathione-peroxidase activities, and glutathione levels was detected as well. These were accompanied by extended centrilobular necrosis, steatosis, fibrosis, and an altered ultrastructure of hepatocytes. Pretreatment with formulated or free flavonoid retained the biochemical markers to control values. Histopathological and electron-microscopic examination confirmed the biochemical results. In conclusion, both NGN and NGN/β-cyclodextrin complex showed antioxidant and hepatoprotective effects against injuries induced by CCl4.
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Oxidative modifications of proteins in different tissues of Carassius auratus gibelio exposed to silicon quantum dots. Toxicol Lett 2011. [DOI: 10.1016/j.toxlet.2011.05.769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Etude physiologique de la fibre collagène du rat blanc thyréo-gonadectomisé. Gerontology 2009. [DOI: 10.1159/000211112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Helicobacter pylori infection, nonsteroidal anti-inflammatory drugs, and gastroduodenal pathology: current status. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1999; 103:44-7. [PMID: 10756924 DOI: pmid/10756924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Non-steroidal anti-inflammatory drugs (NSAIDs) are now widely used medicines and their relationship with gastroduodenal injury is well established. The overall risk for serious gastrointestinal side effects in patients taking NSAIDs is three times greater than that of control groups and this risk rises to more than five times in elderly patients. Moreover, the risk of gastrointestinal surgery is ten times greater in elderly patients taking NSAIDs than in controls. Therapeutic aspects like the necessity of eradication of Helicobacter pylori (H. pylori) in order to reduce the gastroduodenal risks for NSAIDs users, the indication for eradication of H.pylori of those with past history of peptic ulcer and require NSAID therapy, the role of eradication when the NSAIDs are used in association with misoprostol.
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Endoscopic intravascular esophageal pressure measurements in cirrhotic patients: response to metoclopramide. HEPATO-GASTROENTEROLOGY 1993; 40:173-175. [PMID: 8509050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
This study reports the effects of metoclopramide (10 mg i.v.) on intravascular esophageal variceal pressure in 12 patients with alcoholic cirrhosis. The esophageal variceal pressure was measured by the direct variceal puncture technique. Metoclopramide caused a reduction in the variceal pressure in 10 out of 12 patients; overall, there was a decrease from 21.5 +/- 5.0 mmHg to 14.0 +/- 3.4 mmHg (p < 0.001). In conclusion, intravenous metoclopramide, which increases lower esophageal sphincter pressure, significantly decreases intravascular variceal pressure in cirrhotic patients.
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[The photocolorimetric determination of reducing agents using sodium metavanadate as reagent]. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1990; 94:595-8. [PMID: 2131558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The oxidative properties of Vv can be used in the photocolorimetric determination of those reducers which give no other reactions with vanadium ions-penta and tetravalent. Two determination scales of the reducers were elaborated and the isoniazide hydrazide from tablets was dosed with satisfactory results.
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Mesures pérendoscopiques de la pression intra-variqueuse avant et après paracentèse chez des patients cirrhotiques porteurs d’une ascite sous tension. ACTA ENDOSCOPICA 1990; 20:545-549. [DOI: 10.1007/bf02966784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
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Ranitidine in the treatment of reflux esophagitis in patients with duodenal ulcer. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1990; 94:277-80. [PMID: 2100833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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30
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[An analytical study of 2 dimethylxanthine derivatives with action at the level of the cardiovascular system]. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1989; 93:577-80. [PMID: 2636756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The analytical investigation of two derivatives of dimenthylxantine series, conventionally termed Imfilin and Carprofilin, is presented. For the quantitative determination of these derivatives the authors suggest spectrophotometric methods in UV which gave good results in the physicochemical control of the substances and of certain pharmaceutical forms (injectable solutions, tablets). The suggested methods were applied in observing the stability of these pharmaceutical forms as well as in their determination in the biological material.
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31
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Pirenzepine in the treatment of reflux esophagitis. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1988; 92:643-7. [PMID: 3253915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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32
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[Optimization of the diagnosis of gastric cancer: cytology via endoscopic fine-needle aspiration]. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1988; 92:377-8. [PMID: 3187249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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33
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[Physicochemical and biopharmaceutical characteristics of trimag tablets]. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1988; 92:355-8. [PMID: 3187245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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34
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[Vasodilators in decompensated chronic cor pulmonale]. REVISTA DE MEDICINA INTERNA, NEUROLOGE, PSIHIATRIE, NEUROCHIRURGIE, DERMATO-VENEROLOGIE. MEDICINA INTERNA 1986; 38:345-8. [PMID: 2879338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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35
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[Case of Dubin-Johnson syndrome]. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1986; 90:165-6. [PMID: 3764168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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36
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[Personality profile of the patient with the sequelae of myocardial infarct]. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1985; 89:237-9. [PMID: 4089325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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37
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[Dynamics of the degradation of macromolecule-associated acetylsalicylic acid in solutions]. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1985; 89:125-8. [PMID: 4070864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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38
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[Comparative evaluation of the genetic toxicity of organophosphate pesticides by various mutagenicity tests]. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1984; 88:531-4. [PMID: 6400143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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39
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[Effect of agglutinating and diluent excipients on the quality of Trimag tablets]. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1984; 88:145-7. [PMID: 6545960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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40
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[Cholesterolemia and total lipidemia in children aged 5-14. Average normal limits and prevalence of hyperlipidemias (prospective studies in an infantile population of 27,500 children in the framework of the Oradea Study of Risk Factors in Coronary Disease]. REVISTA DE PEDIATRIE, OBSTETRICA SI GINECOLOGIE. PEDIATRIA 1983; 32:39-50. [PMID: 6412343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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41
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[New analytical reagents of the ortho-hydroxy-acetophenonanil class. I. Spectrophotometric determination of Fe 3+]. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1981; 85:523-6. [PMID: 7336005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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42
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[Clinico-epidemiological considerations on an outbreak of Q fever in the Argeş region]. REVISTA DE IGIENA, BACTERIOLOGIE, VIRUSOLOGIE, PARAZITOLOGIE, EPIDEMIOLOGIE, PNEUMOFTIZIOLOGIE. BACTERIOLOGIA, VIRUSOLOGIA, PARAZITOLOGIA, EPIDEMIOLOGIA 1980; 25:171-4. [PMID: 7433815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The present paper reports on a Q fever episode, including 45 subjects (caretakers, technicians, workers building stables) in a zootechnical cooperative in the district of Argeş. In the new unit milch and reproduction cows were brought from various parts of the district. None of the animals showed visible signs of the disease. No cases of Q fever had been reported in man or animals in the locality until then. The episode had an explosive character, the outbreak occurring during the calving season. The diagnosis was established clinically, epidemiologically, radiologically and serologically.
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43
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[Psychosomatic aspects of gastric ulcer]. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1980; 84:217-9. [PMID: 7221275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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44
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[Primary cancer of the liver. Comments on etiology and diagnosis with reference to 56 cases]. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1978; 82:379-84. [PMID: 16296491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
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45
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[Vanadate determination of some phenothiazine derivatives]. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1978; 82:337-40. [PMID: 705134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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46
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[Spectrophotometric determination of some phenothiazine derivatives]. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1977; 81:665-8. [PMID: 613418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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47
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48
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[Determination of fluorine and iodine as microelements in agricultural food products in Moldavia]. REVISTA MEDICO-CHIRURGICALA A SOCIETATII DE MEDICI SI NATURALISTI DIN IASI 1973; 77:139-44. [PMID: 4793227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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49
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[Relationship of glycide and lipid metabolism in patients with Addison's disease]. CASOPIS LEKARU CESKYCH 1967; 106:974-7. [PMID: 6077096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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50
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Various abnormal neuro-pituitary-adrenal activity models as a substrate for adrenal bilateral hyperplasia with Cushing's syndrome. RASSEGNA DI NEUROLOGIA VEGETATIVA 1967; 21:165-85. [PMID: 5608349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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