scholarly journals Evaluation of Antimicrobial Effect against Some Microorganisms and Apoptotic Activity against Candida Species of New Vanillin Derivatives

Author(s):  
Hakan Ünver ◽  
Zerrin Cantürk ◽  
M. Güçlü Özarda
2018 ◽  
Vol 242 ◽  
pp. 01021 ◽  
Author(s):  
Rattiporn Kaypetch ◽  
Sroisiri Thaweboon

Fungal infection is one of the main clinical problems due to the extensive uses of broad-spectrum antibiotics and immunosuppressive therapy. Among all, candida species are the most prevalent. Piper betle Linn., a tropical plant intimately associated with pepper, has been widely used as a traditional herb in many Asian countries. The purpose of this study was to evaluate the antimicrobial effect of essential oil extracted from fresh leaves of P. betle against four strains of candida species, C. albicans, C. glabrata, C. krusei, C. parapsilosis, C. tropicalis, C. pseudotropicalis and C. stellatoidia. Inhibitory activity was primarily screened by Kirby-Bauer disc diffusion technique and subsequently the minimum inhibitory concentration (MIC) was determined by agar dilution technique. Betel oil exhibited a high potential of antifungal property against all strains of yeast with inhibition zones ranged from 32 to 33 mm. in diameter and MIC values of 0.039-0.078 % v/v. Data from this study demonstrates a potential application of betel oil in drug preparations and development for the treatment of candida infection. Further investigations are required to define the antifungal mechanism of this oil as well as clinical trial in the patients.


PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3993 ◽  
Author(s):  
Abdelrahman Elshafay ◽  
Ngo Xuan Tinh ◽  
Samar Salman ◽  
Yara Saber Shaheen ◽  
Eman Bashir Othman ◽  
...  

Ginsenoside Rk1 (G-Rk1) is a unique component created by processing the ginseng plant (mainly Sung Ginseng (SG)) at high temperatures. The aim of our study was to systematically review the pharmacological effects of G-Rk1. We utilized and manually searched eight databases to select in vivo and in vitro original studies that provided information about biological, pharmaceutical effects of G-Rk1 and were published up to July 2017 with no restriction on language or study design. Out of the 156 papers identified, we retrieved 28 eligible papers in the first skimming phase of research. Several articles largely described the G-Rk1 anti-cancer activity investigating “cell viability”, “cell proliferation inhibition”, “apoptotic activity”, and “effects of G-Rk1 on G1 phase and autophagy in tumor cells” either alone or in combination with G-Rg5. Others proved that it has antiplatelet aggregation activities, anti-inflammatory effects, anti-insulin resistance, nephroprotective effect, antimicrobial effect, cognitive function enhancement, lipid accumulation reduction and prevents osteoporosis. In conclusion, G-Rk1 has a significant anti-tumor effect on liver cancer, melanoma, lung cancer, cervical cancer, colon cancer, pancreatic cancer, gastric cancer, and breast adenocarcinoma against in vitro cell lines. In vivo experiments are further warranted to confirm these effects.


Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 397 ◽  
Author(s):  
Aukse Navaruckiene ◽  
Edvinas Skliutas ◽  
Sigita Kasetaite ◽  
Sima Rekštytė ◽  
Vita Raudoniene ◽  
...  

The investigation of biobased systems as photocurable resins for optical 3D printing has attracted great attention in recent years; therefore, novel vanillin acrylate-based resins were designed and investigated. Cross-linked polymers were prepared by radical photopolymerization of vanillin derivatives (vanillin dimethacrylate and vanillin diacrylate) using ethyl(2,4,6-trimethylbenzoyl)phenylphosphinate as photoinitiator. The changes of rheological properties were examined during the curing with ultraviolet/visible irradiation to detect the influences of solvent, photoinitiator, and vanillin derivative on cross-linking rate and network formation. Vanillin diacrylate-based polymers had higher values of yield of insoluble fraction, thermal stability, and better mechanical properties in comparison to vanillin dimethacrylate-based polymers. Moreover, the vanillin diacrylate polymer film showed a significant antimicrobial effect, only a bit weaker than that of chitosan film. Thermal and mechanical properties of vanillin acrylate-based polymers were comparable with those of commercial petroleum-derived materials used in optical 3D printing. Also, vanillin diacrylate proved to be well-suited for optical printing as was demonstrated by employing direct laser writing 3D lithography and microtransfer molding techniques.


2019 ◽  
Vol 13 (1) ◽  
pp. 107-116
Author(s):  
Mu’ad Al-zuabe ◽  
Yazan Ismail ◽  
Diya Hasan ◽  
Hussein Alhrout ◽  
Safaa Al-Zeidaneen ◽  
...  

2014 ◽  
Vol 16 (1) ◽  
pp. 77-84 ◽  
Author(s):  
Mahdi Vazirian ◽  
Mohammad Ali Faramarzi ◽  
Seyed Esmaeil Sadat Ebrahimi ◽  
Hamid Reza Monsef Esfahani ◽  
Nasrin Samadi ◽  
...  

2007 ◽  
Vol 69 (6) ◽  
pp. 638-642
Author(s):  
Manabu MAEDA ◽  
Masaaki YOSHIDA ◽  
Yasushi YONEMITSU
Keyword(s):  

2018 ◽  
Vol 17 (6) ◽  
pp. 167-174 ◽  
Author(s):  
Małgorzata Schollenberger ◽  
Tomasz M. Staniek ◽  
Elżbieta Paduch-Cichal ◽  
Beata Dasiewicz ◽  
Agnieszka Gadomska-Gajadhur ◽  
...  

Plant essential oils of six aromatic herb species and interspecies hybrids of the family Lamiaceae – chocolate mint (Mentha piperita × ‘Chocolate’), pineapple mint (Mentha suaveolens ‘Variegata’), apple mint (Mentha × rotundifolia), spearmint (Mentha spicata), orange mint (Mentha × piperita ‘Granada’) and strawberry mint (Mentha × villosa ‘Strawberry’) – were investigated for antimicrobial effects against plant pathogenic bacteria: Agrobacterium tumefaciens, Pseudomonas syringae pv. syringae and Xanthomonas arboricola pv. corylina. The screening was carried out in vitro on agar plates filled with the target organism. All essential oils screened exhibited a higher level of antibacterial activity against A. tumefaciens and X. arboricola pv. corylina than streptomycin used as a standard in all tests. The antimicrobial effect of streptomycin and five mint oils was at the same level for P. syringae pv. syringae. There were no significant differences in the influence of the chocolate mint oil on the growth inhibition of all bacteria tested. Plant essential oils from pineapple mint, apple mint, spearmint and strawberry mint showed the weakest antimicrobial activity against P. syringae pv. syringae and the strongest towards A. tumefaciens and X. arboricola pv. corylina. The essential oils from strawberry mint, pineapple mint, spearmint and apple mint had the strongest effect on A. tumefaciens, and the lowest inhibitory activity was exhibited by the chocolate mint and orange mint essential oils. X. arboricola pv. corylina was the most sensitive to the strawberry mint, pineapple mint and spearmint oils. The chocolate mint oil showed the greatest activity against P. syringae pv. syringae.


Sign in / Sign up

Export Citation Format

Share Document