Logo Medical Science Monitor

Call: +1.631.470.9640
Mon - Fri 10:00 am - 02:00 pm EST

Contact Us

Logo Medical Science Monitor Logo Medical Science Monitor Logo Medical Science Monitor

18 June 2002

Cyclic nitric oxide release by human granulocytes, and invertebrate gangliaand immunocytes: nano-technological enhancement of amperometric nitric oxide determination.

George B Stefano, Michel Salzet, Harold I Magazine

Med Sci Monit 2002; 8(6): BR199-204 :: ID: 420824

Abstract

BACKGROUND: Various tissues from vertebrates and invertebrates respondto external signal molecules by rapid release of nitric oxide (NO) mediated by constitutive nitric oxidesynthase.MATERIAL/METHODS: Invertebrate immunocytes were collected from maintained stock and human granulocyteswere isolated from leukocyte-enriched blood obtained from the Long Island Blood Services. The invertebrateganglionic tissue was either extracted or exposed for ex vivo and in vivo evaluation. Nitric oxide releasewas measured using a newly developed NO-selective nanoprobe, exhibiting enhanced sensitivity.RESULTS:Evaluation of NO release from the pedal ganglia of the marine bivalve, Mytilus edulis, demonstrated invitro release of NO that fluctuated from 969 to 1003 pM, with a mean change in NO of 35 pM/cycle anda mean cycle time of approximately 4 minutes. Basal release of NO/cycle from the ganglia in vivo wasincreased significantly to approximately 65 pM (P<0.05) with an increase in cycle time to approximately 7 minutes. Exposure of the ganglia to morphine in vivo resulted in a significant increase in NO release and a lack of NO pulsations. The fluctuation in NO release from immunocytes of Mytilus edulis was approximately 27 pM per cycle with a cycle time of 4 minutes whereas human granulocytes release fluctuated approximately 23 pM with a cycle time of 6 minutes.
Conclusions: These data demonstrate that basal release of NO from various tissues is released in a cyclic manner and the cycle time and magnitude is subject to regulation by external stimuli.

Keywords: Electrochemistry, Ganglia, Granulocytes, Immune System, Mussels, Nitric Oxide, Research Support, U.S. Gov

Add Comment 0 Comments

Editorial

01 February 2025 : Editorial  

Editorial: Current Approaches to Screening for Lung Cancer in Smokers and Non-Smokers

Dinah V. Parums

DOI: 10.12659/MSM.948255

Med Sci Monit 2025; 31:e948255

0:00

In Press

Clinical Research  

Procedure Dynamics in Transfemoral vs Transradial Cerebral Angiography: A Retrospective Study

Med Sci Monit In Press; DOI: 10.12659/MSM.947603  

Clinical Research  

Predicting Cerebral Small Vessel Disease Burden Based on Thromboelastography in Patients with Acute Ischemi...

Med Sci Monit In Press; DOI: 10.12659/MSM.946303  

Clinical Research  

Long-Term Outcomes of Implanon in Managing Adenomyosis: A 3-Year Prospective Study

Med Sci Monit In Press; DOI: 10.12659/MSM.945972  

Laboratory Research  

Linear Dimensional Accuracy in Maxillomandibular Records: A Comparative Study of Scannable and Transparent ...

Med Sci Monit In Press; DOI: 10.12659/MSM.947265  

Most Viewed Current Articles

17 Jan 2024 : Review article   6,969,932

Vaccination Guidelines for Pregnant Women: Addressing COVID-19 and the Omicron Variant

DOI :10.12659/MSM.942799

Med Sci Monit 2024; 30:e942799

0:00

16 May 2023 : Clinical Research   701,896

Electrophysiological Testing for an Auditory Processing Disorder and Reading Performance in 54 School Stude...

DOI :10.12659/MSM.940387

Med Sci Monit 2023; 29:e940387

0:00

01 Mar 2024 : Editorial   25,741

Editorial: First Regulatory Approvals for CRISPR-Cas9 Therapeutic Gene Editing for Sickle Cell Disease and ...

DOI :10.12659/MSM.944204

Med Sci Monit 2024; 30:e944204

0:00

28 Jan 2024 : Review article   20,253

A Review of IgA Vasculitis (Henoch-Schönlein Purpura) Past, Present, and Future

DOI :10.12659/MSM.943912

Med Sci Monit 2024; 30:e943912

0:00

Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750