Ag-substituted octacalcium phosphate blocks that exhibit high osteoconductivity and high antibacterial activity toward various pathogens

2022 ◽  
pp. 103130
Author(s):  
Yuki Sugiura ◽  
Fumiko Ono ◽  
Masakatsu Nohara ◽  
Reina Horino ◽  
Kenji Kutara ◽  
...  
Author(s):  
Sarella Prakash Nathaniel Kumar ◽  
Kanthal L.K. ◽  
Durga S ◽  
Achutha Rama Raju D ◽  
Satyavati K

Several herbs are traditionally used in the treatment of a variety of ailments particularly in the rural areas, where herbal medicine is mainly the source of health care system. Many of these herbs havenot been assessed for safety or toxicity to tissue or organs of the mammalian recipients. An attempt is made to prove the efficacy of Sida cordifolia Linn., (a traditional medicinal plant chosen on the basis of ethnomedical knowledge) for its Cardiotonic, Antibacterial and Anthelmintic activities. Sida cordofolia Linn., is used traditionally, inter alia, in the treatment of various infections, asthma, diarrhoea, heart and stomach disorders. Cardiotonicactivity is performed using isolated Frog Heart Perfusion Technique. Antibacterial activity of the whole plant extracts were assessed by Agar well diffusion method against the strains of Bacillus subtilis, Escherichia coli, and Staphylococcus aureus. Anthelmintic activity was studied against Pheretima posthuma. Phytochemical screening of powdered plant material revealed thepresence of some secondary metabolites such as alkaloids, saponins, tannins, glycosides and flavonoids. Results indicated that methanol, chloroform, aqueous extracts have significant cardiotonic activity but less than standard drugs. Methanol and Aqueous extracts showed high antibacterial activity and anthelmintic activity than the standard drugs. In a nutshell, we can conclude that the methanol and aqueous fractions of Sida cordifolia Linn., had a profound antibacterial and anthelmintic effect eventhough it possessed very significant cardiotonic activity. This validates its continuous usage in ethnomedicine. This plant could be developed into cheap, safe and culturally acceptable standardized herbal products and may serve as asource of new molecules for broad-spectrum antimicrobial and anthelmintic agent.


2021 ◽  
pp. 152808372110117
Author(s):  
Sommai Pivsa-Art ◽  
Komson Sunyikhan ◽  
Weraporn Pivsa-Art

Recycled poly(ethylene terephthalate) (RPET) multifilament yarns are used in carpet manufacturing as a way to reduce plastic waste. The conventional RPET carpet is however susceptible to bacterial accumulation. As a result, this research experimentally doped RPET with nano-structure titanium dioxide (nano-TiO2) to produce RPET/nano-TiO2 bicomponent multifilament yarns with antibacterial property. The experimental multifilament yarn structure consisted of two parts: neat RPET core and RPET/nano-TiO2 shell. The nano-TiO2 content in the shell was varied between 1 and 3 wt% and the core/shell (C/S) ratios between 90/10, 70/30, and 50/50 w/w. The effects of C/S ratio and nano-TiO2 content on the mechanical and antibacterial properties of bicomponent multifilament yarns were determined. The experimental results indicated that the C/S ratio had no effect on the tenacity and elongation at break. Meanwhile, the tenacity and elongation at break of bicomponent fibers increased with nano-TiO2 content in the shell. The TiO2-doped RPET bicomponent yarns effectively inhibited the growth of Escherichia coli and Staphylococcus aureus. The 90/10 bicomponent multifilament fiber with 3 wt% TiO2 achieved the highest antibacterial activity. The very high antibacterial activity was attributable to greater deposition of nano-TiO2 particles near and on the shell surface.


Molecules ◽  
2018 ◽  
Vol 23 (12) ◽  
pp. 3141 ◽  
Author(s):  
Jumina ◽  
Asma Nurmala ◽  
Anggit Fitria ◽  
Deni Pranowo ◽  
Eti Sholikhah ◽  
...  

In the present work, monoacylglycerol derivatives, i.e., 1-monomyristin, 2-monomyristin, and 2-monopalmitin were successfully prepared from commercially available myristic acid and palmitic acid. The 1-monomyristin compound was prepared through a transesterification reaction between ethyl myristate and 1,2-O-isopropylidene glycerol, which was obtained from the protection of glycerol with acetone, then followed by deprotection using Amberlyst-15. On the other hand, 2-monoacylglycerol derivatives were prepared through enzymatic hydrolysis of triglycerides in the presence of Thermomyces lanuginosa lipase enzymes. The synthesized products were analyzed using fourier transform infrared (FTIR) spectrophotometer, gas or liquid chromatography-mass spectrometer (GC-MS or LC-MS), and proton and carbon nuclear magnetic resonance (1H- and 13C-NMR) spectrometers. It was found that monomyristin showed high antibacterial and antifungal activities, while 2-monopalmitin did not show any activity at all. The 1-monomyristin compound showed higher antibacterial activity against Staphylococcus aureus and Aggregatibacter actinomycetemcomitans and also higher antifungal activity against Candida albicans compared to the positive control. Meanwhile, 2-monomyristin showed high antibacterial activity against Escherichia coli. The effect of the acyl position and carbon chains towards antibacterial and antifungal activities was discussed.


2017 ◽  
Vol 247 ◽  
pp. 145-152 ◽  
Author(s):  
Jingjing Hu ◽  
Yanchun Quan ◽  
Yuping Lai ◽  
Zhao Zheng ◽  
Zhiqi Hu ◽  
...  

2016 ◽  
Vol 40 (11) ◽  
pp. 9125-9131 ◽  
Author(s):  
Yong Cheng ◽  
Qichun Feng ◽  
Ming Yin ◽  
Xiaoyan Ren ◽  
Jianzhong Wang ◽  
...  

A novel Ag(i)–AMTD metal–organic gel may serve as a difunctional water treatment agent.


2018 ◽  
Vol 1 (3) ◽  
pp. 693-707 ◽  
Author(s):  
Nikolina A. Travlou ◽  
Manuel Algarra ◽  
Cristina Alcoholado ◽  
Manuel Cifuentes-Rueda ◽  
Alejandro M. Labella ◽  
...  

2020 ◽  
Author(s):  
Akbar Mirzaee ◽  
Edris Jamshidi ◽  
Ehasan Morshedloo ◽  
Shahrzad Javanshir ◽  
Faranak Manteghi

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