scholarly journals Marine Macrolides with Antibacterial and/or Antifungal Activity

Marine Drugs ◽  
2019 ◽  
Vol 17 (4) ◽  
pp. 241 ◽  
Author(s):  
Tomasz M. Karpiński
Keyword(s):  
Antifungal Activity ◽  
Fungal Infections ◽  
Marine Organisms ◽  
Antifungal Activities ◽  
Chemical Structures ◽  
Marine Macrolides ◽  
Antifungal Effects ◽  
The Future ◽  
Antibacterial And Antifungal

Currently, the increasing resistance of microorganisms to antibiotics is a serious problem. Marine organisms are the source of thousands of substances, which also have antibacterial and antifungal effects. Among them, marine macrolides are significant. In this review, the antibacterial and/or antifungal activities of 34 groups of marine macrolides are presented. Exemplary groups are chalcomycins, curvulides, halichondramides, lobophorins, macrolactins, modiolides, scytophycins, spongistatins, or zearalanones. In the paper, 74 antibiotics or their analog sets, among which 29 with antifungal activity, 25 that are antibacterial, and 20 that are both antifungal and antibacterial are summarized. Also, 36 macrolides or their sets are produced by bacteria, 18 by fungi, ten by sponges, seven by algae, two by porifera, and one by nudibranch. Moreover, the chemical structures of representatives from each of the 34 groups of these antibiotics are presented. To summarize, marine organisms are rich in natural macrolides. Some of these may be used in the future in the treatment of bacterial and fungal infections. Marine macrolides can also be potential drugs applicable against pathogens resistant to currently known antibiotics.

scholarly journals Studies on Antibacterial and Antifungal Activities and Minimum Inhibitory Concentrations of Mixed Ligand Transition Metal Complexes of Dibasic Acids as Primary and Heterocyclic Bases as Secondary Ligands

1970 ◽  
Vol 46 (3) ◽  
pp. 365-368 ◽  
Author(s):  
MA Akbor ◽  
MS Islam ◽  
N Akhter ◽  
S Ahmed ◽  
S Siraj
Keyword(s):  
Antifungal Activity ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Mixed Ligand ◽  
Diffusion Method ◽  
Antifungal Activities ◽  
Minimum Inhibitory Concentrations ◽  
Antibacterial And Antifungal Activities ◽  
Antibacterial And Antifungal

Mixed ligand (diphenic/ adipic as primary Ligand and quinoline / 8 - hydroxyquinoline as secondary) transition metal complexes of Cobalt (II), Cupper (II), Rhodium (III) and Platinum (IV) ions were synthesized and characterized. Their antibacterial activities against ten bacteria had been evaluated by the disc diffusion method,whilst their antifungal activities against two fungi had been also evaluated by the same method. Minimum inhibitory concentrations (MIC) had been evaluated against six bacteria. The MIC of the complexes against Shigella dysenteriae, Samonella typhi, Streptococcus-β-haemolyticus and Bacillus megaterium were 32 μg/ml; whilst Escherichia coli and Samonella typhi-A the MIC of Co (II) and Pt (IV) were 32μg/ml and those of Cu(II) and Rh(III) complexes were 64 μg/ml. It was found that Cobalt (II), Cupper (II) & Rhodium (III) complexes had pronounced antibacterial and antifungal activities. Platinum (IV) complex had moderate antibacterial and antifungal activity. These values indicate that these are active compounds. Key words: Mixed Ligand; Transition metal; Antimicrobial Activity; Antifungal Activity Minimum Inhibitory Concentrations (MIC) DOI: http://dx.doi.org/10.3329/bjsir.v46i3.9044 BJSIR 2011; 46(3): 365-368

scholarly journals Anti-Fungal Efficacy and Mechanisms of Flavonoids

Antibiotics ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 45 ◽  
Author(s):  
Mohammed Saleh Al Aboody ◽  
Suresh Mickymaray
Keyword(s):  
Side Effects ◽  
Antimicrobial Agents ◽  
Fungal Infections ◽  
Fungal Diseases ◽  
Antifungal Activities ◽  
Naturally Occurring ◽  
Antifungal Effects ◽  
Natural Drugs ◽  
Anti Fungal ◽  
Synergistic Combinations

The prevalence of fungal infections is growing at an alarming pace and the pathogenesis is still not clearly understood. Recurrence of these fungal diseases is often due to their evolutionary avoidance of antifungal resistance. The development of suitable novel antimicrobial agents for fungal diseases continues to be a major problem in the current clinical field. Hence, it is urgently necessary to develop surrogate agents that are more effective than conventional available drugs. Among the remarkable innovations from earlier investigations on natural-drugs, flavonoids are a group of plant-derived substances capable of promoting many valuable effects on humans. The identification of flavonoids with possible antifungal effects at small concentrations or in synergistic combinations could help to overcome this problem. A combination of flavonoids with available drugs is an excellent approach to reduce the side effects and toxicity. This review focuses on various naturally occurring flavonoids and their antifungal activities, modes of action, and synergetic use in combination with conventional drugs.

scholarly journals BIOACTIVE COMPOUNDS, ANTIBACTERIAL AND ANTIFUNGAL ACTIVITIES OF TWO Cirsium SPECIES

2019 ◽  
Vol 18 (5) ◽  
pp. 213-221 ◽  
Author(s):  
Dumrul Gulen ◽  
Temine Sabudak ◽  
Hakime H. Orak ◽  
Hilmican Caliskan ◽  
Merve Ozer
Keyword(s):  
Antibacterial Activity ◽  
Antifungal Activity ◽  
Bioactive Compounds ◽  
Antifungal Activities ◽  
E Coli ◽  
Inhibition Effect ◽  
Antibacterial And Antifungal Activities ◽  
Hexane Extracts ◽  
Phytochemical Compounds ◽  
Antibacterial And Antifungal

In the GC-MS analysis, 81 bioactive phytochemical compounds were identified in the hexane extracts of Cirsium creticum and Cirsium italicum. Terpenoids constituted the main fractions of C. italicum (70.95 %) while hydrocarbons were most abundant compounds of C. creticum (41.11 %). The antibacterial activity and antifungal activity of extracts from two Cirsium species was tested by using microdilution methods. According to the results of antibacterial activity, highest inhibition effect of C. creticum was found on B. subtilis, E. coli and P. aeruginosa. The highest inhibition effect of C. italicum was found on B. subtilis. In the results of antifungal activity, highest inhibition effect of C. creticum was found on P. chrysogenum and highest inhibition effect of C. italicum was found on C. krusei. The present work is the first report on hexane extracts compounds of two Cirsium species as well as the antibacterial and antifungal activities.

scholarly journals Synthesis and Antimicrobial Activity of 7-Hydroxy-3',4'-Methylenedioxy- and 7-Benzyloxy-3',4'-Methylenedioxy Flavanones

2017 ◽  
Vol 9 (3) ◽  
pp. 297-306 ◽  
Author(s):  
R. Ali ◽  
A. Rahim ◽  
A. Islam
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Antifungal Activity ◽  
Elemental Analysis ◽  
The Other ◽  
Antifungal Activities ◽  
Fungal Strains ◽  
Antibacterial And Antifungal Activities ◽  
Other Hand ◽  
Antibacterial And Antifungal

7-Hydroxy-3',4'-methylenedioxy- and 7-benzyloxy-3',4'-methylenedioxy flavanones have been synthesized starting from 2,4-dihydroxyacetophenone. Subsequently biocidal activities of the flavanones have been investigated along with their corresponding chalcones against some bacterial and fungal strains. 2'-Hydroxy-4'-benzyloxy-3,4-methylenedioxy chalcone (5) and its corresponding flavanone (7) showed good antibacterial and antifungal activities against some selected bacterial and fungal strains. On the other hand, 2',4'-dihydroxy-3,4-methylenedioxy chalcone (4) showed no antibacterial and antifungal activities while its corresponding flavanone (6) showed a little antibacterial activity only at higher concentration but did not show antifungal activity. The synthesized chalcones and flavanones have been characterized using UV-Vis, IR and 1H NMRspectral data together with elemental analysis.

Synthesis and antifungal activities of novel polyheterocyclic spirooxindole derivatives

2015 ◽  
Vol 13 (17) ◽  
pp. 4967-4975 ◽  
Author(s):  
Jia-Shou Wu ◽  
Xue Zhang ◽  
Ying-Lao Zhang ◽  
Jian-Wu Xie
Keyword(s):  
Antifungal Activity ◽  
Phytopathogenic Fungi ◽  
Antifungal Activities ◽  
Mild Conditions ◽  
Michael Reactions ◽  
Antifungal Effects

A series of spirooxindole tetrahydrofuran derivatives were obtained in moderate to good yields via base-mediated cascade [3+2] double Michael reactions under mild conditions. Their antifungal effects on selected five target phytopathogenic fungi were investigated, and their structure antifungal activity relationships were also discussed.

scholarly journals Synthesis, Antibacterial, and Antifungal Activities of Novel Pyridazino Carbazoles

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Ghazala Yaqub ◽  
Abdul Hannan ◽  
Erum Akbar ◽  
Muhammad Usman ◽  
Almas Hamid ◽  
...  
Keyword(s):  
Candida Albicans ◽  
Antifungal Activity ◽  
Functional Groups ◽  
Antibacterial Activities ◽  
Positive Control ◽  
Antifungal Activities ◽  
Antibacterial And Antifungal Activities ◽  
Antibacterial And Antifungal

Strategy to synthesize novel carbazole, that is, 2,3-dihydro-2-phenyl-6H-pyridazino[4, 5-b]carbazole-1,4-dione (2), is developed as key reaction. This novel compound showed ideal reactivity toward different functional groups like methyl, carboxylic, nitro, piperazine, and amine; thus series of its derivatives are synthesized sequentially with the aim to fuel up the carbazole compounds with new versatile derivatives. All compounds were investigated for their activity against bacteria (MRSA andS. typhi) and fungi (Candida albicans). Among tested compounds3,6, and8exhibited pronounced antibacterial activities while2,5, and9also showed moderate activities.2,3,5,7, and9showed stronger antifungal activity againstCandida albicanscomparable to positive control.

scholarly journals Antifungal activities of quince seed mucilage hydrogel decorated with essential oils of Nigella sativa, Citrus sinensis and Cinnamon verum

2021 ◽  
Author(s):  
Mehdi Mirzaii ◽  
Marzieh Yaeghoobi ◽  
Meysam Afzali ◽  
Neginsadat Amirkhalili ◽  
Majid Mahmoodi ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Side Effects ◽  
Essential Oils ◽  
Ultrasonic Treatment ◽  
Fungal Infections ◽  
Vitro Assay ◽  
Antifungal Activities ◽  
Antifungal Properties

Background and Objectives: Candidiasis and pityriasis versicolor are opportunistic fungal infections that are caused by Candida spp. and Malassezia spp. yeasts. Conventional drugs like azole and amino derivatives are known to treat fungal skin diseases. However, drawbacks like long-term side effects and drug resistance lead to investigate on antifungal properties of phytochemicals as an alternative to available synthetic drugs. Materials and Methods: The herbal nano hydrogel was successfully synthesized from Quince Seed extract followed by ultrasonic treatment and it has been formulated using a mixture of essential oils. We evaluated the antifungal in vitro assay for a mixture of essential oils in combination with herbal nano hydrogel against Candida albicans and Malasezia furfur strains by micro dilution method. Results: The results indicated that essential oils possess antifungal activity with the MIC value of 12.5 and 6.24 mg/ml against C. albicans and M. furfur, respectively. No fungicidal effect was reported for the herbal hydrogel before nanofabrication while it shown some antifungal activity after ultrasonic treatment for 5 and 10 minutes. As anticipated; the antifungal property of essential oil mixture was appreciably improved when it combined with herbal nano hydrogel where the highest level of inhibition was observed at concentration of 3.125 mg/ml for both strains. The loss in biological activity observed when the ultrasonic treatment on herbal nano hydrogel performed for longer time. Conclusion: The proposed plant-based nano formulation shown promising in vitro antifungal activities against C. albicans and M. furfur strains and its antifungal properties were comparable with commercially available agents like clotrimazole. The new formulation expected to be safe with minimum long-term side effects. Further investigations are underway to confirm the safety and the mechanism of the action of this new herbal formulation.

scholarly journals Antimicrobial Activities of Mint Lemonade Plant Extracts from Salt and Heavy Metal Stressed Plants

2021 ◽  
pp. 112-122
Author(s):  
Asima Khan ◽  
Qurban Ali ◽  
Muhammad Awais Javeid ◽  
Arif Malik
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Antifungal Activity ◽  
Bacillus Cereus ◽  
Plant Extracts ◽  
Aeromonas Hydrophila ◽  
Zone Of Inhibition ◽  
Antifungal Activities ◽  
Antibacterial And Antifungal Activities ◽  
Antibacterial And Antifungal

Aim of present research was to evaluate the anti-bacterial, anti-fungal, anti-oxidant and multi-stress activities of a medicinal plant Mint Lemonade plant extract. Fresh mint was purchased from the nearest market. The samples were cleaned with distilled led water and its leaves, stem and roots were separated them all. The material was dried in shade at room temperature (24ºC). The three types of extracts were prepared for each sample of mint plantviz, ethanol, n-hexane and water. The antibacterial and antifungal activities of ethanolic, n-haxene and aqueous mint extract was determined on Escherichia coli, Bacillus cereus, Pseudomonas, Aeromonas hydrophila, Aspergillus niger, Aspergillus flavous and Rhizopus stolonifer respectively. From the results of the antibacterial and antifungal activities it was clear that the aqueous extract showed no inhibitory effect on test these microorganisms. In ethanolic extract of antibacterial activity Escherichia coli showed the maximum zone of inhibition with diameters of 3.90 cm at 50 µl dose. Bacilluscereus showed the zone of inhibition diameter 4.9 cm. Pseudomonas showed the maximum zone of inhibition in diameter 3.86mm.Aeromonas hydrophila expressed the maximum zone of inhibition in diameter 3.86mm. The n-hexane extracts antibacterial activity of E. coli, Bacillus cereus, Pseudomonas and Aeromonas hydrophila showed the zone of inhibition 3.86 cm, 4.5 cm, 7.90 mm and 4.71 cm respectively, while the positive control showed inhibition zone about 0.0 cm. The antifungal activity in n-haxene extract showed the maximum result in Aspergillus flavous 18 cm of the area of inhibition. In ethanol extracts antifungal activity showed the maximum result in Aspergillus flavous 4.8 cm of the zone of inhibition. The inhibitory action of mint plant extracts indicated that the plant may be used as potential antibacterial agent.

scholarly journals Dacrymenone and VM 3298-2 - New Antibiotics with Antibacterial and Antifungal Activity

2003 ◽  
Vol 58 (7-8) ◽  
pp. 541-546 ◽  
Author(s):  
Viktor Mierau ◽  
Timm Anke ◽  
Olov Sterner
Keyword(s):  
Antifungal Activity ◽  
Spectroscopic Techniques ◽  
Antibacterial And Antifungal Activity ◽  
Enol Ether ◽  
Antifungal Activities ◽  
New Antibiotics ◽  
Methyl Pyruvate ◽  
Antibacterial And Antifungal

Abstract Two new antibiotic metabolites, dacrymenone (1) and VM 3298-2 (2), were isolated from fermentations of a Dacrymyces sp., and their structures were determined by spectroscopic techniques. Dacrymenone (1) is a new eremophilane sesquiterpenoid while VM 3298-2 (2) is a bis-enol ether between methyl pyruvate and 4,6-dihydroxycyclohexan-1,3-dione. Dacrymenone (1) shows weak antibacterial and antifungal activity while VM 3298-2 (2) exhibits cytotoxic and antifungal activities.

scholarly journals Topical Nanoemulsion of Rifampicin with Benzoic Acid and Salicylic Acid: Activity Against Staphylococcus aureus, Stap. epidermis and Candida albicans

2019 ◽  
Vol 22 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Kohinur Begum ◽  
Mashmum Shababa Shahid ◽  
Reza Ul Jalil
Keyword(s):  
Staphylococcus Aureus ◽  
Salicylic Acid ◽  
Candida Albicans ◽  
Benzoic Acid ◽  
Fungal Infections ◽  
Tween 80 ◽  
Pharmaceutical Journal ◽  
Strong Activity ◽  
Antifungal Effects ◽  
Antibacterial And Antifungal

The aim of this study was to formulate a topical nanoemulsion which can be used to treat both bacterial and fungal infections of the skin. Eight self-emulsifying drug delivery systems composed of different combinations of rifampicin (1%), benzoic acid (6%) and salicylic acid (3%) were formulated and designated as F1, F2, F3, F4, F5, F6, F7 and F8. Nanoemulsions of the eight formulations were prepared using oleic acid, Tween 80 and water by sonication method. Antibacterial and antifungal effects were observed against Staphylococcus aureus, Stap. epidermis and Candida albicans by the Kirby-Bauer method. The nanoemulsion containing only rifampicin showed strong activity against S. aureus and S. epidermis, but not against C. albicans. The nanoemulsion containing both benzoic acid and salicylic acid showed better activity in C. albicans, but not against S. aureus and S. epidermis. However, the nanoemulsions consisting of all three active ingredients showed significant results against S. aureus, S. epidermis and C. albicans. Bangladesh Pharmaceutical Journal 22(1): 1-6, 2019

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