A rhodamine-based turn-on nitric oxide sensor in aqueous medium with endogenous cell imaging: an unusual formation of nitrosohydroxylamine

2018 ◽  
Vol 16 (21) ◽  
pp. 3910-3920 ◽  
Author(s):  
Rabiul Alam ◽  
Abu Saleh Musha Islam ◽  
Mihir Sasmal ◽  
Atul Katarkar ◽  
Mahammad Ali

The sensor L3 selectively recognizes NO in purely aqueous medium with an unusual formation of nitrosohydroxylamine with a turn-on fluorescence response which might be suitable for in vivo application.

1999 ◽  
Author(s):  
Marcelo Bariatto ◽  
Rogerio Furlan ◽  
Koiti Arakai ◽  
Jorge J. Santiago-Aviles

Abstract Nitric oxide (NO) is known to mediate many beneficial physiology processes, motivating its detection in vivo as well as in vitro. Electrochemical detection provides the required cellular level determination of NO among several other techniques. In this work, electrochemical micro-sensors for both types of detection, in vivo and in vitro, were developed, exploring the silicon planar technology, which presents high yield and reliability and also permits batch fabrication. The developed in vitro sensor features eight detection sites (10 μm × 10 μm microelectrodes), for determination of nitric oxide spatial distribution or multi-species analysis. Different electrochemical methods were applied to provide sensor calibration and chemical reproducibility. For in vivo analysis, the designed structures have a needle shape (40 μm thick) and they were silicon micro-machined by using plasma etching or etch stop techniques. Different configurations were designed and implemented, containing a number of detection microelectrodes that vary from 2 to 10. The amperometric detection of both nitric oxide and nitride (NO2−) — a molecule that causes an interference — were investigated by using the in vitro micro-sensor configuration. The need of a cationic exchanger (Nafion) was demonstrated in order to provide selectivity to NO for low concentrations. Also, the developed sensor has a sensitivity of 500 A/M.cm2 and a detection limit of 10 μM.


2015 ◽  
Vol 44 (12) ◽  
pp. 5763-5770 ◽  
Author(s):  
Shyamaprosad Goswami ◽  
Krishnendu Aich ◽  
Sangita Das ◽  
Chitrangada Das Mukhopadhyay ◽  
Deblina Sarkar ◽  
...  

A new quinoline based sensor was developed and applied for the selective detection of Cd2+ both in vitro and in vivo.


2020 ◽  
Vol 259 ◽  
pp. 116234 ◽  
Author(s):  
Zheng Li ◽  
Fucai Dai ◽  
Jing Wang ◽  
Shujun Wang ◽  
Liwei Xiao ◽  
...  

The Analyst ◽  
2019 ◽  
Vol 144 (8) ◽  
pp. 2696-2703 ◽  
Author(s):  
Senjuti Halder ◽  
Soham Samanta ◽  
Gopal Das

A simple AIE active urea molecule (L1) can selectively interact with HSAviaturn-on fluorescence response in aqueous medium.


1996 ◽  
pp. 23 ◽  
Author(s):  
Esther Leung ◽  
Peter J Cragg ◽  
Danny O'Hare ◽  
Michael O'Shea

2020 ◽  
Author(s):  
Ji Qi ◽  
Leyan Feng ◽  
Xiaoyan Zhang ◽  
Haoke Zhang ◽  
Liwen Huang ◽  
...  

Nitric oxide (NO) is an important signaling molecule overexpressed in many diseases, thus the development of NO-activatable probes is of vital significance for monitoring related diseases. However, sensitive photoacoustic (PA) probes for detecting NO-associated complicated diseases (e.g., encephalitis), has yet to be developed. Herein, we report a NO-activated PA probe for in vivo detection of encephalitis by tuning the molecular geometry and energy transformation processes. A strong donor-acceptor structure with good conjugation can be obtained after NO treatment, along with the active intramolecular motion, significantly boosting “turn-on” near-infrared PA property. The molecular probe exhibits high specificity and sensitivity towards NO over interfering reactive species. Noninvasive in vivo imaging indicates that PA signal lights up in lipopolysaccharide-induced encephalitis with a high signal-to-background ratio of 15.7. Further studies reveal that the probe is also capable of differentiating encephalitis in different severities, being beneficial for understanding the disease evolution processes and drug screening. This work will inspire more insights into the development of high-performing NO-activated PA probes for advanced diagnosis by making full use of intramolecular motion and energy transformation processes.


2019 ◽  
Vol 43 (14) ◽  
pp. 5297-5307 ◽  
Author(s):  
Hasan Mohammad ◽  
Abu Saleh Musha Islam ◽  
Chandraday Prodhan ◽  
Mahammad Ali

A fluorescein hydrazone based probe selectively recognizes Hg2+ ion with live cell imaging application.


2017 ◽  
Vol 41 (20) ◽  
pp. 11661-11671 ◽  
Author(s):  
Rahul Bhowmick ◽  
Abu Saleh Musha Islam ◽  
Arindam Giri ◽  
Atul Katarkar ◽  
Mahammad Ali

A novel hexa-coordinating rhodamine-based chemosensor, HL6, selectively and rapidly recognizes Fe3+ in the presence of a number of metal cations, numerous anions and amino acids in purely aqueous medium with live cell imaging applications.


2004 ◽  
Vol 97 ◽  
pp. S10
Author(s):  
Masami Goto ◽  
Yoji Neishi ◽  
Seiichi Mochizuki ◽  
Takehiro Miyasaka ◽  
Renan Sukmawan ◽  
...  

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