Cited by 214Sulfur Compounds in BiologyRedox biology and oxidative stressGarlic and Onion Studies

Analytical measurement of discrete hydrogen sulfide pools in biological specimens

Open access
Shen, Xinggui, Peter, Elvis A., Bir, Shyamal, Wang, Rui, Kevil, Christopher G.·2012·Free Radical Biology and Medicine

Abstract

Hydrogen sulfide (H₂S) is a ubiquitous gaseous signaling molecule that plays a vital role in numerous cellular functions and has become the focus of many research endeavors, including pharmacotherapeutic manipulation. Among the challenges facing the field is the accurate measurement of biologically active H₂S. We have recently reported that the typically used methylene blue method and its associated results are invalid and do not measure bona fide H₂S. The complexity of analytical H₂S measurement reflects the fact that hydrogen sulfide is a volatile gas and exists in the body in various forms, including a free form, an acid-labile pool, and bound as sulfane sulfur. Here we describe a new protocol to discretely measure specific H₂S pools using the monobromobimane method coupled with RP-HPLC. This new protocol involves selective liberation, trapping, and derivatization of H₂S. Acid-labile H₂S is released by incubating the sample in an acidic solution (pH 2.6) of 100 mM phosphate buffer with 0.1mM diethylenetriaminepentaacetic acid (DTPA), in an enclosed system to contain volatilized H₂S. Volatilized H₂S is then trapped in 100 mM Tris-HCl (pH 9.5, 0.1 mM DTPA) and then reacted with excess monobromobimane. In a separate aliquot, the contribution of the bound sulfane sulfur pool was measured by incubating the sample with 1 mM TCEP (tris(2-carboxyethyl)phosphine hydrochloride), a reducing agent, to reduce disulfide bonds, in 100 mM phosphate buffer (pH 2.6, 0.1 mM DTPA), and H₂S measurement was performed in a manner analogous to the one described above. The acid-labile pool was determined by subtracting the free hydrogen sulfide value from the value obtained by the acid-liberation protocol. The bound sulfane sulfur pool was determined by subtracting the H₂S measurement from the acid-liberation protocol alone compared to that of TCEP plus acidic conditions. In summary, our new method allows very sensitive and accurate measurement of the three primary biological pools of H₂S, including free, acid-labile, and bound sulfane sulfur, in various biological specimens.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.freeradbiomed.2012.04.007

Cites

37 of 37 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The existence of sulfide stores was proposed following critical revision and comparison of different concentrations of sulfide in blood, plasma and tissues obtained using different detection methods.

    “The existence of such stores was proposed some time ago following critical revision and comparison of the different concentrations of sulfide in blood, plasma and tissues obtained using different detection methods.”

    From On the chemical biology of the nitrite/sulfide interaction (2015) · cites this paper as [77]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Shen, X., Peter, E. A., Bir, S., Wang, R., & Kevil, C. G.
Affiliations
  • Louisiana State University Health Sciences Center Shreveport (US)
  • Lakehead University (CA)
Corresponding author
Kevil, Christopher G.
Venue
Free Radical Biology and Medicine
Publisher
Elsevier BV
Published
2012-06
Volume
52
Issue
11-12
Pages
2276-2283
ISSN
0891-5849 (ISSN-L)
OpenAlex
W2094678745
Cited by
214
References
37
Citations by year
2026: 3 · 2025: 13 · 2024: 8 · 2023: 19 · 2022: 13 · 2021: 22 · 2020: 18 · 2019: 14 · 2018: 19 · 2017: 13 · 2016: 13 · 2015: 22 · 2014: 19 · 2013: 17 · 2012: 1
FWCI
8.09
Type
journal article
Language
en
Open access
Locations
  • Free Radical Biology and Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Natural Sciences and Engineering Research Council of Canada
  • National Heart, Lung, and Blood Institute (R01HL113303)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Sulfur Compounds in Biology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Garlic and Onion Studies
Keywords
hydrogen sulfide, acid-labile sulfide, sulfane sulfur, monobromobimane derivatization, reversed-phase HPLC, DTPA, TCEP, biological specimen
MeSH terms
Adult, Animals, Bridged Bicyclo Compounds, Chemistry Techniques, Analytical, Chromatography, High Pressure Liquid, Pentetic Acid, Humans, Hydrogen Sulfide, Male, Phosphines, Sulfides, Volatilization, Young Adult

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review